/* Generated by Cython 0.29.21 */

/* BEGIN: Cython Metadata
{
    "distutils": {
        "name": "cygraph.graph_.dynamic_graph",
        "sources": [
            "cygraph/graph_/dynamic_graph.pyx"
        ]
    },
    "module_name": "cygraph.graph_.dynamic_graph"
}
END: Cython Metadata */

#define PY_SSIZE_T_CLEAN
#include "Python.h"
#ifndef Py_PYTHON_H
    #error Python headers needed to compile C extensions, please install development version of Python.
#elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03030000)
    #error Cython requires Python 2.6+ or Python 3.3+.
#else
#define CYTHON_ABI "0_29_21"
#define CYTHON_HEX_VERSION 0x001D15F0
#define CYTHON_FUTURE_DIVISION 1
#include <stddef.h>
#ifndef offsetof
  #define offsetof(type, member) ( (size_t) & ((type*)0) -> member )
#endif
#if !defined(WIN32) && !defined(MS_WINDOWS)
  #ifndef __stdcall
    #define __stdcall
  #endif
  #ifndef __cdecl
    #define __cdecl
  #endif
  #ifndef __fastcall
    #define __fastcall
  #endif
#endif
#ifndef DL_IMPORT
  #define DL_IMPORT(t) t
#endif
#ifndef DL_EXPORT
  #define DL_EXPORT(t) t
#endif
#define __PYX_COMMA ,
#ifndef HAVE_LONG_LONG
  #if PY_VERSION_HEX >= 0x02070000
    #define HAVE_LONG_LONG
  #endif
#endif
#ifndef PY_LONG_LONG
  #define PY_LONG_LONG LONG_LONG
#endif
#ifndef Py_HUGE_VAL
  #define Py_HUGE_VAL HUGE_VAL
#endif
#ifdef PYPY_VERSION
  #define CYTHON_COMPILING_IN_PYPY 1
  #define CYTHON_COMPILING_IN_PYSTON 0
  #define CYTHON_COMPILING_IN_CPYTHON 0
  #undef CYTHON_USE_TYPE_SLOTS
  #define CYTHON_USE_TYPE_SLOTS 0
  #undef CYTHON_USE_PYTYPE_LOOKUP
  #define CYTHON_USE_PYTYPE_LOOKUP 0
  #if PY_VERSION_HEX < 0x03050000
    #undef CYTHON_USE_ASYNC_SLOTS
    #define CYTHON_USE_ASYNC_SLOTS 0
  #elif !defined(CYTHON_USE_ASYNC_SLOTS)
    #define CYTHON_USE_ASYNC_SLOTS 1
  #endif
  #undef CYTHON_USE_PYLIST_INTERNALS
  #define CYTHON_USE_PYLIST_INTERNALS 0
  #undef CYTHON_USE_UNICODE_INTERNALS
  #define CYTHON_USE_UNICODE_INTERNALS 0
  #undef CYTHON_USE_UNICODE_WRITER
  #define CYTHON_USE_UNICODE_WRITER 0
  #undef CYTHON_USE_PYLONG_INTERNALS
  #define CYTHON_USE_PYLONG_INTERNALS 0
  #undef CYTHON_AVOID_BORROWED_REFS
  #define CYTHON_AVOID_BORROWED_REFS 1
  #undef CYTHON_ASSUME_SAFE_MACROS
  #define CYTHON_ASSUME_SAFE_MACROS 0
  #undef CYTHON_UNPACK_METHODS
  #define CYTHON_UNPACK_METHODS 0
  #undef CYTHON_FAST_THREAD_STATE
  #define CYTHON_FAST_THREAD_STATE 0
  #undef CYTHON_FAST_PYCALL
  #define CYTHON_FAST_PYCALL 0
  #undef CYTHON_PEP489_MULTI_PHASE_INIT
  #define CYTHON_PEP489_MULTI_PHASE_INIT 0
  #undef CYTHON_USE_TP_FINALIZE
  #define CYTHON_USE_TP_FINALIZE 0
  #undef CYTHON_USE_DICT_VERSIONS
  #define CYTHON_USE_DICT_VERSIONS 0
  #undef CYTHON_USE_EXC_INFO_STACK
  #define CYTHON_USE_EXC_INFO_STACK 0
#elif defined(PYSTON_VERSION)
  #define CYTHON_COMPILING_IN_PYPY 0
  #define CYTHON_COMPILING_IN_PYSTON 1
  #define CYTHON_COMPILING_IN_CPYTHON 0
  #ifndef CYTHON_USE_TYPE_SLOTS
    #define CYTHON_USE_TYPE_SLOTS 1
  #endif
  #undef CYTHON_USE_PYTYPE_LOOKUP
  #define CYTHON_USE_PYTYPE_LOOKUP 0
  #undef CYTHON_USE_ASYNC_SLOTS
  #define CYTHON_USE_ASYNC_SLOTS 0
  #undef CYTHON_USE_PYLIST_INTERNALS
  #define CYTHON_USE_PYLIST_INTERNALS 0
  #ifndef CYTHON_USE_UNICODE_INTERNALS
    #define CYTHON_USE_UNICODE_INTERNALS 1
  #endif
  #undef CYTHON_USE_UNICODE_WRITER
  #define CYTHON_USE_UNICODE_WRITER 0
  #undef CYTHON_USE_PYLONG_INTERNALS
  #define CYTHON_USE_PYLONG_INTERNALS 0
  #ifndef CYTHON_AVOID_BORROWED_REFS
    #define CYTHON_AVOID_BORROWED_REFS 0
  #endif
  #ifndef CYTHON_ASSUME_SAFE_MACROS
    #define CYTHON_ASSUME_SAFE_MACROS 1
  #endif
  #ifndef CYTHON_UNPACK_METHODS
    #define CYTHON_UNPACK_METHODS 1
  #endif
  #undef CYTHON_FAST_THREAD_STATE
  #define CYTHON_FAST_THREAD_STATE 0
  #undef CYTHON_FAST_PYCALL
  #define CYTHON_FAST_PYCALL 0
  #undef CYTHON_PEP489_MULTI_PHASE_INIT
  #define CYTHON_PEP489_MULTI_PHASE_INIT 0
  #undef CYTHON_USE_TP_FINALIZE
  #define CYTHON_USE_TP_FINALIZE 0
  #undef CYTHON_USE_DICT_VERSIONS
  #define CYTHON_USE_DICT_VERSIONS 0
  #undef CYTHON_USE_EXC_INFO_STACK
  #define CYTHON_USE_EXC_INFO_STACK 0
#else
  #define CYTHON_COMPILING_IN_PYPY 0
  #define CYTHON_COMPILING_IN_PYSTON 0
  #define CYTHON_COMPILING_IN_CPYTHON 1
  #ifndef CYTHON_USE_TYPE_SLOTS
    #define CYTHON_USE_TYPE_SLOTS 1
  #endif
  #if PY_VERSION_HEX < 0x02070000
    #undef CYTHON_USE_PYTYPE_LOOKUP
    #define CYTHON_USE_PYTYPE_LOOKUP 0
  #elif !defined(CYTHON_USE_PYTYPE_LOOKUP)
    #define CYTHON_USE_PYTYPE_LOOKUP 1
  #endif
  #if PY_MAJOR_VERSION < 3
    #undef CYTHON_USE_ASYNC_SLOTS
    #define CYTHON_USE_ASYNC_SLOTS 0
  #elif !defined(CYTHON_USE_ASYNC_SLOTS)
    #define CYTHON_USE_ASYNC_SLOTS 1
  #endif
  #if PY_VERSION_HEX < 0x02070000
    #undef CYTHON_USE_PYLONG_INTERNALS
    #define CYTHON_USE_PYLONG_INTERNALS 0
  #elif !defined(CYTHON_USE_PYLONG_INTERNALS)
    #define CYTHON_USE_PYLONG_INTERNALS 1
  #endif
  #ifndef CYTHON_USE_PYLIST_INTERNALS
    #define CYTHON_USE_PYLIST_INTERNALS 1
  #endif
  #ifndef CYTHON_USE_UNICODE_INTERNALS
    #define CYTHON_USE_UNICODE_INTERNALS 1
  #endif
  #if PY_VERSION_HEX < 0x030300F0
    #undef CYTHON_USE_UNICODE_WRITER
    #define CYTHON_USE_UNICODE_WRITER 0
  #elif !defined(CYTHON_USE_UNICODE_WRITER)
    #define CYTHON_USE_UNICODE_WRITER 1
  #endif
  #ifndef CYTHON_AVOID_BORROWED_REFS
    #define CYTHON_AVOID_BORROWED_REFS 0
  #endif
  #ifndef CYTHON_ASSUME_SAFE_MACROS
    #define CYTHON_ASSUME_SAFE_MACROS 1
  #endif
  #ifndef CYTHON_UNPACK_METHODS
    #define CYTHON_UNPACK_METHODS 1
  #endif
  #ifndef CYTHON_FAST_THREAD_STATE
    #define CYTHON_FAST_THREAD_STATE 1
  #endif
  #ifndef CYTHON_FAST_PYCALL
    #define CYTHON_FAST_PYCALL 1
  #endif
  #ifndef CYTHON_PEP489_MULTI_PHASE_INIT
    #define CYTHON_PEP489_MULTI_PHASE_INIT (PY_VERSION_HEX >= 0x03050000)
  #endif
  #ifndef CYTHON_USE_TP_FINALIZE
    #define CYTHON_USE_TP_FINALIZE (PY_VERSION_HEX >= 0x030400a1)
  #endif
  #ifndef CYTHON_USE_DICT_VERSIONS
    #define CYTHON_USE_DICT_VERSIONS (PY_VERSION_HEX >= 0x030600B1)
  #endif
  #ifndef CYTHON_USE_EXC_INFO_STACK
    #define CYTHON_USE_EXC_INFO_STACK (PY_VERSION_HEX >= 0x030700A3)
  #endif
#endif
#if !defined(CYTHON_FAST_PYCCALL)
#define CYTHON_FAST_PYCCALL  (CYTHON_FAST_PYCALL && PY_VERSION_HEX >= 0x030600B1)
#endif
#if CYTHON_USE_PYLONG_INTERNALS
  #include "longintrepr.h"
  #undef SHIFT
  #undef BASE
  #undef MASK
  #ifdef SIZEOF_VOID_P
    enum { __pyx_check_sizeof_voidp = 1 / (int)(SIZEOF_VOID_P == sizeof(void*)) };
  #endif
#endif
#ifndef __has_attribute
  #define __has_attribute(x) 0
#endif
#ifndef __has_cpp_attribute
  #define __has_cpp_attribute(x) 0
#endif
#ifndef CYTHON_RESTRICT
  #if defined(__GNUC__)
    #define CYTHON_RESTRICT __restrict__
  #elif defined(_MSC_VER) && _MSC_VER >= 1400
    #define CYTHON_RESTRICT __restrict
  #elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
    #define CYTHON_RESTRICT restrict
  #else
    #define CYTHON_RESTRICT
  #endif
#endif
#ifndef CYTHON_UNUSED
# if defined(__GNUC__)
#   if !(defined(__cplusplus)) || (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
#     define CYTHON_UNUSED __attribute__ ((__unused__))
#   else
#     define CYTHON_UNUSED
#   endif
# elif defined(__ICC) || (defined(__INTEL_COMPILER) && !defined(_MSC_VER))
#   define CYTHON_UNUSED __attribute__ ((__unused__))
# else
#   define CYTHON_UNUSED
# endif
#endif
#ifndef CYTHON_MAYBE_UNUSED_VAR
#  if defined(__cplusplus)
     template<class T> void CYTHON_MAYBE_UNUSED_VAR( const T& ) { }
#  else
#    define CYTHON_MAYBE_UNUSED_VAR(x) (void)(x)
#  endif
#endif
#ifndef CYTHON_NCP_UNUSED
# if CYTHON_COMPILING_IN_CPYTHON
#  define CYTHON_NCP_UNUSED
# else
#  define CYTHON_NCP_UNUSED CYTHON_UNUSED
# endif
#endif
#define __Pyx_void_to_None(void_result) ((void)(void_result), Py_INCREF(Py_None), Py_None)
#ifdef _MSC_VER
    #ifndef _MSC_STDINT_H_
        #if _MSC_VER < 1300
           typedef unsigned char     uint8_t;
           typedef unsigned int      uint32_t;
        #else
           typedef unsigned __int8   uint8_t;
           typedef unsigned __int32  uint32_t;
        #endif
    #endif
#else
   #include <stdint.h>
#endif
#ifndef CYTHON_FALLTHROUGH
  #if defined(__cplusplus) && __cplusplus >= 201103L
    #if __has_cpp_attribute(fallthrough)
      #define CYTHON_FALLTHROUGH [[fallthrough]]
    #elif __has_cpp_attribute(clang::fallthrough)
      #define CYTHON_FALLTHROUGH [[clang::fallthrough]]
    #elif __has_cpp_attribute(gnu::fallthrough)
      #define CYTHON_FALLTHROUGH [[gnu::fallthrough]]
    #endif
  #endif
  #ifndef CYTHON_FALLTHROUGH
    #if __has_attribute(fallthrough)
      #define CYTHON_FALLTHROUGH __attribute__((fallthrough))
    #else
      #define CYTHON_FALLTHROUGH
    #endif
  #endif
  #if defined(__clang__ ) && defined(__apple_build_version__)
    #if __apple_build_version__ < 7000000
      #undef  CYTHON_FALLTHROUGH
      #define CYTHON_FALLTHROUGH
    #endif
  #endif
#endif

#ifndef CYTHON_INLINE
  #if defined(__clang__)
    #define CYTHON_INLINE __inline__ __attribute__ ((__unused__))
  #elif defined(__GNUC__)
    #define CYTHON_INLINE __inline__
  #elif defined(_MSC_VER)
    #define CYTHON_INLINE __inline
  #elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
    #define CYTHON_INLINE inline
  #else
    #define CYTHON_INLINE
  #endif
#endif

#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX < 0x02070600 && !defined(Py_OptimizeFlag)
  #define Py_OptimizeFlag 0
#endif
#define __PYX_BUILD_PY_SSIZE_T "n"
#define CYTHON_FORMAT_SSIZE_T "z"
#if PY_MAJOR_VERSION < 3
  #define __Pyx_BUILTIN_MODULE_NAME "__builtin__"
  #define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)\
          PyCode_New(a+k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
  #define __Pyx_DefaultClassType PyClass_Type
#else
  #define __Pyx_BUILTIN_MODULE_NAME "builtins"
#if PY_VERSION_HEX >= 0x030800A4 && PY_VERSION_HEX < 0x030800B2
  #define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)\
          PyCode_New(a, 0, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
#else
  #define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)\
          PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
#endif
  #define __Pyx_DefaultClassType PyType_Type
#endif
#ifndef Py_TPFLAGS_CHECKTYPES
  #define Py_TPFLAGS_CHECKTYPES 0
#endif
#ifndef Py_TPFLAGS_HAVE_INDEX
  #define Py_TPFLAGS_HAVE_INDEX 0
#endif
#ifndef Py_TPFLAGS_HAVE_NEWBUFFER
  #define Py_TPFLAGS_HAVE_NEWBUFFER 0
#endif
#ifndef Py_TPFLAGS_HAVE_FINALIZE
  #define Py_TPFLAGS_HAVE_FINALIZE 0
#endif
#ifndef METH_STACKLESS
  #define METH_STACKLESS 0
#endif
#if PY_VERSION_HEX <= 0x030700A3 || !defined(METH_FASTCALL)
  #ifndef METH_FASTCALL
     #define METH_FASTCALL 0x80
  #endif
  typedef PyObject *(*__Pyx_PyCFunctionFast) (PyObject *self, PyObject *const *args, Py_ssize_t nargs);
  typedef PyObject *(*__Pyx_PyCFunctionFastWithKeywords) (PyObject *self, PyObject *const *args,
                                                          Py_ssize_t nargs, PyObject *kwnames);
#else
  #define __Pyx_PyCFunctionFast _PyCFunctionFast
  #define __Pyx_PyCFunctionFastWithKeywords _PyCFunctionFastWithKeywords
#endif
#if CYTHON_FAST_PYCCALL
#define __Pyx_PyFastCFunction_Check(func)\
    ((PyCFunction_Check(func) && (METH_FASTCALL == (PyCFunction_GET_FLAGS(func) & ~(METH_CLASS | METH_STATIC | METH_COEXIST | METH_KEYWORDS | METH_STACKLESS)))))
#else
#define __Pyx_PyFastCFunction_Check(func) 0
#endif
#if CYTHON_COMPILING_IN_PYPY && !defined(PyObject_Malloc)
  #define PyObject_Malloc(s)   PyMem_Malloc(s)
  #define PyObject_Free(p)     PyMem_Free(p)
  #define PyObject_Realloc(p)  PyMem_Realloc(p)
#endif
#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030400A1
  #define PyMem_RawMalloc(n)           PyMem_Malloc(n)
  #define PyMem_RawRealloc(p, n)       PyMem_Realloc(p, n)
  #define PyMem_RawFree(p)             PyMem_Free(p)
#endif
#if CYTHON_COMPILING_IN_PYSTON
  #define __Pyx_PyCode_HasFreeVars(co)  PyCode_HasFreeVars(co)
  #define __Pyx_PyFrame_SetLineNumber(frame, lineno) PyFrame_SetLineNumber(frame, lineno)
#else
  #define __Pyx_PyCode_HasFreeVars(co)  (PyCode_GetNumFree(co) > 0)
  #define __Pyx_PyFrame_SetLineNumber(frame, lineno)  (frame)->f_lineno = (lineno)
#endif
#if !CYTHON_FAST_THREAD_STATE || PY_VERSION_HEX < 0x02070000
  #define __Pyx_PyThreadState_Current PyThreadState_GET()
#elif PY_VERSION_HEX >= 0x03060000
  #define __Pyx_PyThreadState_Current _PyThreadState_UncheckedGet()
#elif PY_VERSION_HEX >= 0x03000000
  #define __Pyx_PyThreadState_Current PyThreadState_GET()
#else
  #define __Pyx_PyThreadState_Current _PyThreadState_Current
#endif
#if PY_VERSION_HEX < 0x030700A2 && !defined(PyThread_tss_create) && !defined(Py_tss_NEEDS_INIT)
#include "pythread.h"
#define Py_tss_NEEDS_INIT 0
typedef int Py_tss_t;
static CYTHON_INLINE int PyThread_tss_create(Py_tss_t *key) {
  *key = PyThread_create_key();
  return 0;
}
static CYTHON_INLINE Py_tss_t * PyThread_tss_alloc(void) {
  Py_tss_t *key = (Py_tss_t *)PyObject_Malloc(sizeof(Py_tss_t));
  *key = Py_tss_NEEDS_INIT;
  return key;
}
static CYTHON_INLINE void PyThread_tss_free(Py_tss_t *key) {
  PyObject_Free(key);
}
static CYTHON_INLINE int PyThread_tss_is_created(Py_tss_t *key) {
  return *key != Py_tss_NEEDS_INIT;
}
static CYTHON_INLINE void PyThread_tss_delete(Py_tss_t *key) {
  PyThread_delete_key(*key);
  *key = Py_tss_NEEDS_INIT;
}
static CYTHON_INLINE int PyThread_tss_set(Py_tss_t *key, void *value) {
  return PyThread_set_key_value(*key, value);
}
static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
  return PyThread_get_key_value(*key);
}
#endif
#if CYTHON_COMPILING_IN_CPYTHON || defined(_PyDict_NewPresized)
#define __Pyx_PyDict_NewPresized(n)  ((n <= 8) ? PyDict_New() : _PyDict_NewPresized(n))
#else
#define __Pyx_PyDict_NewPresized(n)  PyDict_New()
#endif
#if PY_MAJOR_VERSION >= 3 || CYTHON_FUTURE_DIVISION
  #define __Pyx_PyNumber_Divide(x,y)         PyNumber_TrueDivide(x,y)
  #define __Pyx_PyNumber_InPlaceDivide(x,y)  PyNumber_InPlaceTrueDivide(x,y)
#else
  #define __Pyx_PyNumber_Divide(x,y)         PyNumber_Divide(x,y)
  #define __Pyx_PyNumber_InPlaceDivide(x,y)  PyNumber_InPlaceDivide(x,y)
#endif
#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x030500A1 && CYTHON_USE_UNICODE_INTERNALS
#define __Pyx_PyDict_GetItemStr(dict, name)  _PyDict_GetItem_KnownHash(dict, name, ((PyASCIIObject *) name)->hash)
#else
#define __Pyx_PyDict_GetItemStr(dict, name)  PyDict_GetItem(dict, name)
#endif
#if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_KIND)
  #define CYTHON_PEP393_ENABLED 1
  #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
                                              0 : _PyUnicode_Ready((PyObject *)(op)))
  #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_LENGTH(u)
  #define __Pyx_PyUnicode_READ_CHAR(u, i) PyUnicode_READ_CHAR(u, i)
  #define __Pyx_PyUnicode_MAX_CHAR_VALUE(u)   PyUnicode_MAX_CHAR_VALUE(u)
  #define __Pyx_PyUnicode_KIND(u)         PyUnicode_KIND(u)
  #define __Pyx_PyUnicode_DATA(u)         PyUnicode_DATA(u)
  #define __Pyx_PyUnicode_READ(k, d, i)   PyUnicode_READ(k, d, i)
  #define __Pyx_PyUnicode_WRITE(k, d, i, ch)  PyUnicode_WRITE(k, d, i, ch)
  #if defined(PyUnicode_IS_READY) && defined(PyUnicode_GET_SIZE)
  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
  #else
  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_LENGTH(u))
  #endif
#else
  #define CYTHON_PEP393_ENABLED 0
  #define PyUnicode_1BYTE_KIND  1
  #define PyUnicode_2BYTE_KIND  2
  #define PyUnicode_4BYTE_KIND  4
  #define __Pyx_PyUnicode_READY(op)       (0)
  #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_SIZE(u)
  #define __Pyx_PyUnicode_READ_CHAR(u, i) ((Py_UCS4)(PyUnicode_AS_UNICODE(u)[i]))
  #define __Pyx_PyUnicode_MAX_CHAR_VALUE(u)   ((sizeof(Py_UNICODE) == 2) ? 65535 : 1114111)
  #define __Pyx_PyUnicode_KIND(u)         (sizeof(Py_UNICODE))
  #define __Pyx_PyUnicode_DATA(u)         ((void*)PyUnicode_AS_UNICODE(u))
  #define __Pyx_PyUnicode_READ(k, d, i)   ((void)(k), (Py_UCS4)(((Py_UNICODE*)d)[i]))
  #define __Pyx_PyUnicode_WRITE(k, d, i, ch)  (((void)(k)), ((Py_UNICODE*)d)[i] = ch)
  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_SIZE(u))
#endif
#if CYTHON_COMPILING_IN_PYPY
  #define __Pyx_PyUnicode_Concat(a, b)      PyNumber_Add(a, b)
  #define __Pyx_PyUnicode_ConcatSafe(a, b)  PyNumber_Add(a, b)
#else
  #define __Pyx_PyUnicode_Concat(a, b)      PyUnicode_Concat(a, b)
  #define __Pyx_PyUnicode_ConcatSafe(a, b)  ((unlikely((a) == Py_None) || unlikely((b) == Py_None)) ?\
      PyNumber_Add(a, b) : __Pyx_PyUnicode_Concat(a, b))
#endif
#if CYTHON_COMPILING_IN_PYPY && !defined(PyUnicode_Contains)
  #define PyUnicode_Contains(u, s)  PySequence_Contains(u, s)
#endif
#if CYTHON_COMPILING_IN_PYPY && !defined(PyByteArray_Check)
  #define PyByteArray_Check(obj)  PyObject_TypeCheck(obj, &PyByteArray_Type)
#endif
#if CYTHON_COMPILING_IN_PYPY && !defined(PyObject_Format)
  #define PyObject_Format(obj, fmt)  PyObject_CallMethod(obj, "__format__", "O", fmt)
#endif
#define __Pyx_PyString_FormatSafe(a, b)   ((unlikely((a) == Py_None || (PyString_Check(b) && !PyString_CheckExact(b)))) ? PyNumber_Remainder(a, b) : __Pyx_PyString_Format(a, b))
#define __Pyx_PyUnicode_FormatSafe(a, b)  ((unlikely((a) == Py_None || (PyUnicode_Check(b) && !PyUnicode_CheckExact(b)))) ? PyNumber_Remainder(a, b) : PyUnicode_Format(a, b))
#if PY_MAJOR_VERSION >= 3
  #define __Pyx_PyString_Format(a, b)  PyUnicode_Format(a, b)
#else
  #define __Pyx_PyString_Format(a, b)  PyString_Format(a, b)
#endif
#if PY_MAJOR_VERSION < 3 && !defined(PyObject_ASCII)
  #define PyObject_ASCII(o)            PyObject_Repr(o)
#endif
#if PY_MAJOR_VERSION >= 3
  #define PyBaseString_Type            PyUnicode_Type
  #define PyStringObject               PyUnicodeObject
  #define PyString_Type                PyUnicode_Type
  #define PyString_Check               PyUnicode_Check
  #define PyString_CheckExact          PyUnicode_CheckExact
#ifndef PyObject_Unicode
  #define PyObject_Unicode             PyObject_Str
#endif
#endif
#if PY_MAJOR_VERSION >= 3
  #define __Pyx_PyBaseString_Check(obj) PyUnicode_Check(obj)
  #define __Pyx_PyBaseString_CheckExact(obj) PyUnicode_CheckExact(obj)
#else
  #define __Pyx_PyBaseString_Check(obj) (PyString_Check(obj) || PyUnicode_Check(obj))
  #define __Pyx_PyBaseString_CheckExact(obj) (PyString_CheckExact(obj) || PyUnicode_CheckExact(obj))
#endif
#ifndef PySet_CheckExact
  #define PySet_CheckExact(obj)        (Py_TYPE(obj) == &PySet_Type)
#endif
#if PY_VERSION_HEX >= 0x030900A4
  #define __Pyx_SET_REFCNT(obj, refcnt) Py_SET_REFCNT(obj, refcnt)
  #define __Pyx_SET_SIZE(obj, size) Py_SET_SIZE(obj, size)
#else
  #define __Pyx_SET_REFCNT(obj, refcnt) Py_REFCNT(obj) = (refcnt)
  #define __Pyx_SET_SIZE(obj, size) Py_SIZE(obj) = (size)
#endif
#if CYTHON_ASSUME_SAFE_MACROS
  #define __Pyx_PySequence_SIZE(seq)  Py_SIZE(seq)
#else
  #define __Pyx_PySequence_SIZE(seq)  PySequence_Size(seq)
#endif
#if PY_MAJOR_VERSION >= 3
  #define PyIntObject                  PyLongObject
  #define PyInt_Type                   PyLong_Type
  #define PyInt_Check(op)              PyLong_Check(op)
  #define PyInt_CheckExact(op)         PyLong_CheckExact(op)
  #define PyInt_FromString             PyLong_FromString
  #define PyInt_FromUnicode            PyLong_FromUnicode
  #define PyInt_FromLong               PyLong_FromLong
  #define PyInt_FromSize_t             PyLong_FromSize_t
  #define PyInt_FromSsize_t            PyLong_FromSsize_t
  #define PyInt_AsLong                 PyLong_AsLong
  #define PyInt_AS_LONG                PyLong_AS_LONG
  #define PyInt_AsSsize_t              PyLong_AsSsize_t
  #define PyInt_AsUnsignedLongMask     PyLong_AsUnsignedLongMask
  #define PyInt_AsUnsignedLongLongMask PyLong_AsUnsignedLongLongMask
  #define PyNumber_Int                 PyNumber_Long
#endif
#if PY_MAJOR_VERSION >= 3
  #define PyBoolObject                 PyLongObject
#endif
#if PY_MAJOR_VERSION >= 3 && CYTHON_COMPILING_IN_PYPY
  #ifndef PyUnicode_InternFromString
    #define PyUnicode_InternFromString(s) PyUnicode_FromString(s)
  #endif
#endif
#if PY_VERSION_HEX < 0x030200A4
  typedef long Py_hash_t;
  #define __Pyx_PyInt_FromHash_t PyInt_FromLong
  #define __Pyx_PyInt_AsHash_t   PyInt_AsLong
#else
  #define __Pyx_PyInt_FromHash_t PyInt_FromSsize_t
  #define __Pyx_PyInt_AsHash_t   PyInt_AsSsize_t
#endif
#if PY_MAJOR_VERSION >= 3
  #define __Pyx_PyMethod_New(func, self, klass) ((self) ? ((void)(klass), PyMethod_New(func, self)) : __Pyx_NewRef(func))
#else
  #define __Pyx_PyMethod_New(func, self, klass) PyMethod_New(func, self, klass)
#endif
#if CYTHON_USE_ASYNC_SLOTS
  #if PY_VERSION_HEX >= 0x030500B1
    #define __Pyx_PyAsyncMethodsStruct PyAsyncMethods
    #define __Pyx_PyType_AsAsync(obj) (Py_TYPE(obj)->tp_as_async)
  #else
    #define __Pyx_PyType_AsAsync(obj) ((__Pyx_PyAsyncMethodsStruct*) (Py_TYPE(obj)->tp_reserved))
  #endif
#else
  #define __Pyx_PyType_AsAsync(obj) NULL
#endif
#ifndef __Pyx_PyAsyncMethodsStruct
    typedef struct {
        unaryfunc am_await;
        unaryfunc am_aiter;
        unaryfunc am_anext;
    } __Pyx_PyAsyncMethodsStruct;
#endif

#if defined(WIN32) || defined(MS_WINDOWS)
  #define _USE_MATH_DEFINES
#endif
#include <math.h>
#ifdef NAN
#define __PYX_NAN() ((float) NAN)
#else
static CYTHON_INLINE float __PYX_NAN() {
  float value;
  memset(&value, 0xFF, sizeof(value));
  return value;
}
#endif
#if defined(__CYGWIN__) && defined(_LDBL_EQ_DBL)
#define __Pyx_truncl trunc
#else
#define __Pyx_truncl truncl
#endif

#define __PYX_MARK_ERR_POS(f_index, lineno) \
    { __pyx_filename = __pyx_f[f_index]; (void)__pyx_filename; __pyx_lineno = lineno; (void)__pyx_lineno; __pyx_clineno = __LINE__; (void)__pyx_clineno; }
#define __PYX_ERR(f_index, lineno, Ln_error) \
    { __PYX_MARK_ERR_POS(f_index, lineno) goto Ln_error; }

#ifndef __PYX_EXTERN_C
  #ifdef __cplusplus
    #define __PYX_EXTERN_C extern "C"
  #else
    #define __PYX_EXTERN_C extern
  #endif
#endif

#define __PYX_HAVE__cygraph__graph___dynamic_graph
#define __PYX_HAVE_API__cygraph__graph___dynamic_graph
/* Early includes */
#ifdef _OPENMP
#include <omp.h>
#endif /* _OPENMP */

#if defined(PYREX_WITHOUT_ASSERTIONS) && !defined(CYTHON_WITHOUT_ASSERTIONS)
#define CYTHON_WITHOUT_ASSERTIONS
#endif

typedef struct {PyObject **p; const char *s; const Py_ssize_t n; const char* encoding;
                const char is_unicode; const char is_str; const char intern; } __Pyx_StringTabEntry;

#define __PYX_DEFAULT_STRING_ENCODING_IS_ASCII 0
#define __PYX_DEFAULT_STRING_ENCODING_IS_UTF8 0
#define __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT (PY_MAJOR_VERSION >= 3 && __PYX_DEFAULT_STRING_ENCODING_IS_UTF8)
#define __PYX_DEFAULT_STRING_ENCODING ""
#define __Pyx_PyObject_FromString __Pyx_PyBytes_FromString
#define __Pyx_PyObject_FromStringAndSize __Pyx_PyBytes_FromStringAndSize
#define __Pyx_uchar_cast(c) ((unsigned char)c)
#define __Pyx_long_cast(x) ((long)x)
#define __Pyx_fits_Py_ssize_t(v, type, is_signed)  (\
    (sizeof(type) < sizeof(Py_ssize_t))  ||\
    (sizeof(type) > sizeof(Py_ssize_t) &&\
          likely(v < (type)PY_SSIZE_T_MAX ||\
                 v == (type)PY_SSIZE_T_MAX)  &&\
          (!is_signed || likely(v > (type)PY_SSIZE_T_MIN ||\
                                v == (type)PY_SSIZE_T_MIN)))  ||\
    (sizeof(type) == sizeof(Py_ssize_t) &&\
          (is_signed || likely(v < (type)PY_SSIZE_T_MAX ||\
                               v == (type)PY_SSIZE_T_MAX)))  )
static CYTHON_INLINE int __Pyx_is_valid_index(Py_ssize_t i, Py_ssize_t limit) {
    return (size_t) i < (size_t) limit;
}
#if defined (__cplusplus) && __cplusplus >= 201103L
    #include <cstdlib>
    #define __Pyx_sst_abs(value) std::abs(value)
#elif SIZEOF_INT >= SIZEOF_SIZE_T
    #define __Pyx_sst_abs(value) abs(value)
#elif SIZEOF_LONG >= SIZEOF_SIZE_T
    #define __Pyx_sst_abs(value) labs(value)
#elif defined (_MSC_VER)
    #define __Pyx_sst_abs(value) ((Py_ssize_t)_abs64(value))
#elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
    #define __Pyx_sst_abs(value) llabs(value)
#elif defined (__GNUC__)
    #define __Pyx_sst_abs(value) __builtin_llabs(value)
#else
    #define __Pyx_sst_abs(value) ((value<0) ? -value : value)
#endif
static CYTHON_INLINE const char* __Pyx_PyObject_AsString(PyObject*);
static CYTHON_INLINE const char* __Pyx_PyObject_AsStringAndSize(PyObject*, Py_ssize_t* length);
#define __Pyx_PyByteArray_FromString(s) PyByteArray_FromStringAndSize((const char*)s, strlen((const char*)s))
#define __Pyx_PyByteArray_FromStringAndSize(s, l) PyByteArray_FromStringAndSize((const char*)s, l)
#define __Pyx_PyBytes_FromString        PyBytes_FromString
#define __Pyx_PyBytes_FromStringAndSize PyBytes_FromStringAndSize
static CYTHON_INLINE PyObject* __Pyx_PyUnicode_FromString(const char*);
#if PY_MAJOR_VERSION < 3
    #define __Pyx_PyStr_FromString        __Pyx_PyBytes_FromString
    #define __Pyx_PyStr_FromStringAndSize __Pyx_PyBytes_FromStringAndSize
#else
    #define __Pyx_PyStr_FromString        __Pyx_PyUnicode_FromString
    #define __Pyx_PyStr_FromStringAndSize __Pyx_PyUnicode_FromStringAndSize
#endif
#define __Pyx_PyBytes_AsWritableString(s)     ((char*) PyBytes_AS_STRING(s))
#define __Pyx_PyBytes_AsWritableSString(s)    ((signed char*) PyBytes_AS_STRING(s))
#define __Pyx_PyBytes_AsWritableUString(s)    ((unsigned char*) PyBytes_AS_STRING(s))
#define __Pyx_PyBytes_AsString(s)     ((const char*) PyBytes_AS_STRING(s))
#define __Pyx_PyBytes_AsSString(s)    ((const signed char*) PyBytes_AS_STRING(s))
#define __Pyx_PyBytes_AsUString(s)    ((const unsigned char*) PyBytes_AS_STRING(s))
#define __Pyx_PyObject_AsWritableString(s)    ((char*) __Pyx_PyObject_AsString(s))
#define __Pyx_PyObject_AsWritableSString(s)    ((signed char*) __Pyx_PyObject_AsString(s))
#define __Pyx_PyObject_AsWritableUString(s)    ((unsigned char*) __Pyx_PyObject_AsString(s))
#define __Pyx_PyObject_AsSString(s)    ((const signed char*) __Pyx_PyObject_AsString(s))
#define __Pyx_PyObject_AsUString(s)    ((const unsigned char*) __Pyx_PyObject_AsString(s))
#define __Pyx_PyObject_FromCString(s)  __Pyx_PyObject_FromString((const char*)s)
#define __Pyx_PyBytes_FromCString(s)   __Pyx_PyBytes_FromString((const char*)s)
#define __Pyx_PyByteArray_FromCString(s)   __Pyx_PyByteArray_FromString((const char*)s)
#define __Pyx_PyStr_FromCString(s)     __Pyx_PyStr_FromString((const char*)s)
#define __Pyx_PyUnicode_FromCString(s) __Pyx_PyUnicode_FromString((const char*)s)
static CYTHON_INLINE size_t __Pyx_Py_UNICODE_strlen(const Py_UNICODE *u) {
    const Py_UNICODE *u_end = u;
    while (*u_end++) ;
    return (size_t)(u_end - u - 1);
}
#define __Pyx_PyUnicode_FromUnicode(u)       PyUnicode_FromUnicode(u, __Pyx_Py_UNICODE_strlen(u))
#define __Pyx_PyUnicode_FromUnicodeAndLength PyUnicode_FromUnicode
#define __Pyx_PyUnicode_AsUnicode            PyUnicode_AsUnicode
#define __Pyx_NewRef(obj) (Py_INCREF(obj), obj)
#define __Pyx_Owned_Py_None(b) __Pyx_NewRef(Py_None)
static CYTHON_INLINE PyObject * __Pyx_PyBool_FromLong(long b);
static CYTHON_INLINE int __Pyx_PyObject_IsTrue(PyObject*);
static CYTHON_INLINE int __Pyx_PyObject_IsTrueAndDecref(PyObject*);
static CYTHON_INLINE PyObject* __Pyx_PyNumber_IntOrLong(PyObject* x);
#define __Pyx_PySequence_Tuple(obj)\
    (likely(PyTuple_CheckExact(obj)) ? __Pyx_NewRef(obj) : PySequence_Tuple(obj))
static CYTHON_INLINE Py_ssize_t __Pyx_PyIndex_AsSsize_t(PyObject*);
static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t);
#if CYTHON_ASSUME_SAFE_MACROS
#define __pyx_PyFloat_AsDouble(x) (PyFloat_CheckExact(x) ? PyFloat_AS_DOUBLE(x) : PyFloat_AsDouble(x))
#else
#define __pyx_PyFloat_AsDouble(x) PyFloat_AsDouble(x)
#endif
#define __pyx_PyFloat_AsFloat(x) ((float) __pyx_PyFloat_AsDouble(x))
#if PY_MAJOR_VERSION >= 3
#define __Pyx_PyNumber_Int(x) (PyLong_CheckExact(x) ? __Pyx_NewRef(x) : PyNumber_Long(x))
#else
#define __Pyx_PyNumber_Int(x) (PyInt_CheckExact(x) ? __Pyx_NewRef(x) : PyNumber_Int(x))
#endif
#define __Pyx_PyNumber_Float(x) (PyFloat_CheckExact(x) ? __Pyx_NewRef(x) : PyNumber_Float(x))
#if PY_MAJOR_VERSION < 3 && __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
static int __Pyx_sys_getdefaultencoding_not_ascii;
static int __Pyx_init_sys_getdefaultencoding_params(void) {
    PyObject* sys;
    PyObject* default_encoding = NULL;
    PyObject* ascii_chars_u = NULL;
    PyObject* ascii_chars_b = NULL;
    const char* default_encoding_c;
    sys = PyImport_ImportModule("sys");
    if (!sys) goto bad;
    default_encoding = PyObject_CallMethod(sys, (char*) "getdefaultencoding", NULL);
    Py_DECREF(sys);
    if (!default_encoding) goto bad;
    default_encoding_c = PyBytes_AsString(default_encoding);
    if (!default_encoding_c) goto bad;
    if (strcmp(default_encoding_c, "ascii") == 0) {
        __Pyx_sys_getdefaultencoding_not_ascii = 0;
    } else {
        char ascii_chars[128];
        int c;
        for (c = 0; c < 128; c++) {
            ascii_chars[c] = c;
        }
        __Pyx_sys_getdefaultencoding_not_ascii = 1;
        ascii_chars_u = PyUnicode_DecodeASCII(ascii_chars, 128, NULL);
        if (!ascii_chars_u) goto bad;
        ascii_chars_b = PyUnicode_AsEncodedString(ascii_chars_u, default_encoding_c, NULL);
        if (!ascii_chars_b || !PyBytes_Check(ascii_chars_b) || memcmp(ascii_chars, PyBytes_AS_STRING(ascii_chars_b), 128) != 0) {
            PyErr_Format(
                PyExc_ValueError,
                "This module compiled with c_string_encoding=ascii, but default encoding '%.200s' is not a superset of ascii.",
                default_encoding_c);
            goto bad;
        }
        Py_DECREF(ascii_chars_u);
        Py_DECREF(ascii_chars_b);
    }
    Py_DECREF(default_encoding);
    return 0;
bad:
    Py_XDECREF(default_encoding);
    Py_XDECREF(ascii_chars_u);
    Py_XDECREF(ascii_chars_b);
    return -1;
}
#endif
#if __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT && PY_MAJOR_VERSION >= 3
#define __Pyx_PyUnicode_FromStringAndSize(c_str, size) PyUnicode_DecodeUTF8(c_str, size, NULL)
#else
#define __Pyx_PyUnicode_FromStringAndSize(c_str, size) PyUnicode_Decode(c_str, size, __PYX_DEFAULT_STRING_ENCODING, NULL)
#if __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT
static char* __PYX_DEFAULT_STRING_ENCODING;
static int __Pyx_init_sys_getdefaultencoding_params(void) {
    PyObject* sys;
    PyObject* default_encoding = NULL;
    char* default_encoding_c;
    sys = PyImport_ImportModule("sys");
    if (!sys) goto bad;
    default_encoding = PyObject_CallMethod(sys, (char*) (const char*) "getdefaultencoding", NULL);
    Py_DECREF(sys);
    if (!default_encoding) goto bad;
    default_encoding_c = PyBytes_AsString(default_encoding);
    if (!default_encoding_c) goto bad;
    __PYX_DEFAULT_STRING_ENCODING = (char*) malloc(strlen(default_encoding_c) + 1);
    if (!__PYX_DEFAULT_STRING_ENCODING) goto bad;
    strcpy(__PYX_DEFAULT_STRING_ENCODING, default_encoding_c);
    Py_DECREF(default_encoding);
    return 0;
bad:
    Py_XDECREF(default_encoding);
    return -1;
}
#endif
#endif


/* Test for GCC > 2.95 */
#if defined(__GNUC__)     && (__GNUC__ > 2 || (__GNUC__ == 2 && (__GNUC_MINOR__ > 95)))
  #define likely(x)   __builtin_expect(!!(x), 1)
  #define unlikely(x) __builtin_expect(!!(x), 0)
#else /* !__GNUC__ or GCC < 2.95 */
  #define likely(x)   (x)
  #define unlikely(x) (x)
#endif /* __GNUC__ */
static CYTHON_INLINE void __Pyx_pretend_to_initialize(void* ptr) { (void)ptr; }

static PyObject *__pyx_m = NULL;
static PyObject *__pyx_d;
static PyObject *__pyx_b;
static PyObject *__pyx_cython_runtime = NULL;
static PyObject *__pyx_empty_tuple;
static PyObject *__pyx_empty_bytes;
static PyObject *__pyx_empty_unicode;
static int __pyx_lineno;
static int __pyx_clineno = 0;
static const char * __pyx_cfilenm= __FILE__;
static const char *__pyx_filename;


static const char *__pyx_f[] = {
  "cygraph/graph_/dynamic_graph.pyx",
};

/*--- Type declarations ---*/
struct __pyx_obj_7cygraph_6graph__5graph_Graph;
struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph;
struct __pyx_opt_args_7cygraph_6graph__5graph_5Graph_add_edge;
struct __pyx_opt_args_7cygraph_6graph__5graph_5Graph_equals;

/* "cygraph/graph_/graph.pxd":21
 *     cpdef object get_vertex_attribute(self, vertex, key)
 *     cpdef bint has_vertex(self, object vertex) except *
 *     cpdef void add_edge(self, object v1, object v2, double weight=*) except *             # <<<<<<<<<<<<<<
 *     cpdef void set_edge_weight(self, object v1, object v2, double weight) except *
 *     cpdef void add_edges(self, set edges) except *
 */
struct __pyx_opt_args_7cygraph_6graph__5graph_5Graph_add_edge {
  int __pyx_n;
  double weight;
};

/* "cygraph/graph_/graph.pxd":33
 *     cpdef set get_children(self, object v)
 *     cpdef set get_parents(self, object v)
 *     cpdef bint equals(self, Graph other, bint vertex_attrs=*, bint edge_attrs=*) except *             # <<<<<<<<<<<<<<
 */
struct __pyx_opt_args_7cygraph_6graph__5graph_5Graph_equals {
  int __pyx_n;
  int vertex_attrs;
  int edge_attrs;
};
struct __pyx_opt_args_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_edge;

/* "cygraph/graph_/dynamic_graph.pyx":210
 *         return edges
 * 
 *     cpdef void add_edge(self, object v1, object v2, double weight=1.0             # <<<<<<<<<<<<<<
 *             ) except *:
 *         """Adds edge to graph between two vertices with a weight.
 */
struct __pyx_opt_args_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_edge {
  int __pyx_n;
  double weight;
};

/* "cygraph/graph_/graph.pxd":4
 * #cython: language_level=3
 * 
 * cdef class Graph:             # <<<<<<<<<<<<<<
 *     cdef dict _vertex_attributes
 *     cdef dict _edge_attributes
 */
struct __pyx_obj_7cygraph_6graph__5graph_Graph {
  PyObject_HEAD
  struct __pyx_vtabstruct_7cygraph_6graph__5graph_Graph *__pyx_vtab;
  PyObject *_vertex_attributes;
  PyObject *_edge_attributes;
  PyObject *vertices;
  int directed;
};


/* "cygraph/graph_/dynamic_graph.pxd":7
 * 
 * 
 * cdef class DynamicGraph(Graph):             # <<<<<<<<<<<<<<
 *     # _adjacency_matrix[u][v] -> weight of edge between u and v.
 *     # None means there is no edge.
 */
struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph {
  struct __pyx_obj_7cygraph_6graph__5graph_Graph __pyx_base;
  PyObject *_adjacency_matrix;
};



/* "cygraph/graph_/graph.pxd":4
 * #cython: language_level=3
 * 
 * cdef class Graph:             # <<<<<<<<<<<<<<
 *     cdef dict _vertex_attributes
 *     cdef dict _edge_attributes
 */

struct __pyx_vtabstruct_7cygraph_6graph__5graph_Graph {
  int (*_get_vertex_int)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *);
  void (*add_vertex)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, int __pyx_skip_dispatch);
  void (*add_vertices)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, int __pyx_skip_dispatch);
  void (*remove_vertex)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, int __pyx_skip_dispatch);
  void (*set_vertex_attribute)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, PyObject *, int __pyx_skip_dispatch);
  void (*remove_vertex_attribute)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch);
  void (*set_vertex_attributes)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch);
  PyObject *(*get_vertex_attribute)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch);
  int (*has_vertex)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, int __pyx_skip_dispatch);
  void (*add_edge)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch, struct __pyx_opt_args_7cygraph_6graph__5graph_5Graph_add_edge *__pyx_optional_args);
  void (*set_edge_weight)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, double, int __pyx_skip_dispatch);
  void (*add_edges)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, int __pyx_skip_dispatch);
  void (*remove_edge)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch);
  void (*set_edge_attribute)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, PyObject *, int __pyx_skip_dispatch);
  void (*remove_edge_attribute)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch);
  void (*set_edge_attributes)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch);
  PyObject *(*get_edge_attribute)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch);
  double (*get_edge_weight)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch);
  int (*has_edge)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch);
  PyObject *(*get_children)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, int __pyx_skip_dispatch);
  PyObject *(*get_parents)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, int __pyx_skip_dispatch);
  int (*equals)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, struct __pyx_obj_7cygraph_6graph__5graph_Graph *, int __pyx_skip_dispatch, struct __pyx_opt_args_7cygraph_6graph__5graph_5Graph_equals *__pyx_optional_args);
};
static struct __pyx_vtabstruct_7cygraph_6graph__5graph_Graph *__pyx_vtabptr_7cygraph_6graph__5graph_Graph;


/* "cygraph/graph_/dynamic_graph.pyx":12
 * 
 * 
 * cdef class DynamicGraph(Graph):             # <<<<<<<<<<<<<<
 *     """A class representing a graph data structure.
 * 
 */

struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph {
  struct __pyx_vtabstruct_7cygraph_6graph__5graph_Graph __pyx_base;
};
static struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_vtabptr_7cygraph_6graph__13dynamic_graph_DynamicGraph;

/* --- Runtime support code (head) --- */
/* Refnanny.proto */
#ifndef CYTHON_REFNANNY
  #define CYTHON_REFNANNY 0
#endif
#if CYTHON_REFNANNY
  typedef struct {
    void (*INCREF)(void*, PyObject*, int);
    void (*DECREF)(void*, PyObject*, int);
    void (*GOTREF)(void*, PyObject*, int);
    void (*GIVEREF)(void*, PyObject*, int);
    void* (*SetupContext)(const char*, int, const char*);
    void (*FinishContext)(void**);
  } __Pyx_RefNannyAPIStruct;
  static __Pyx_RefNannyAPIStruct *__Pyx_RefNanny = NULL;
  static __Pyx_RefNannyAPIStruct *__Pyx_RefNannyImportAPI(const char *modname);
  #define __Pyx_RefNannyDeclarations void *__pyx_refnanny = NULL;
#ifdef WITH_THREAD
  #define __Pyx_RefNannySetupContext(name, acquire_gil)\
          if (acquire_gil) {\
              PyGILState_STATE __pyx_gilstate_save = PyGILState_Ensure();\
              __pyx_refnanny = __Pyx_RefNanny->SetupContext((name), __LINE__, __FILE__);\
              PyGILState_Release(__pyx_gilstate_save);\
          } else {\
              __pyx_refnanny = __Pyx_RefNanny->SetupContext((name), __LINE__, __FILE__);\
          }
#else
  #define __Pyx_RefNannySetupContext(name, acquire_gil)\
          __pyx_refnanny = __Pyx_RefNanny->SetupContext((name), __LINE__, __FILE__)
#endif
  #define __Pyx_RefNannyFinishContext()\
          __Pyx_RefNanny->FinishContext(&__pyx_refnanny)
  #define __Pyx_INCREF(r)  __Pyx_RefNanny->INCREF(__pyx_refnanny, (PyObject *)(r), __LINE__)
  #define __Pyx_DECREF(r)  __Pyx_RefNanny->DECREF(__pyx_refnanny, (PyObject *)(r), __LINE__)
  #define __Pyx_GOTREF(r)  __Pyx_RefNanny->GOTREF(__pyx_refnanny, (PyObject *)(r), __LINE__)
  #define __Pyx_GIVEREF(r) __Pyx_RefNanny->GIVEREF(__pyx_refnanny, (PyObject *)(r), __LINE__)
  #define __Pyx_XINCREF(r)  do { if((r) != NULL) {__Pyx_INCREF(r); }} while(0)
  #define __Pyx_XDECREF(r)  do { if((r) != NULL) {__Pyx_DECREF(r); }} while(0)
  #define __Pyx_XGOTREF(r)  do { if((r) != NULL) {__Pyx_GOTREF(r); }} while(0)
  #define __Pyx_XGIVEREF(r) do { if((r) != NULL) {__Pyx_GIVEREF(r);}} while(0)
#else
  #define __Pyx_RefNannyDeclarations
  #define __Pyx_RefNannySetupContext(name, acquire_gil)
  #define __Pyx_RefNannyFinishContext()
  #define __Pyx_INCREF(r) Py_INCREF(r)
  #define __Pyx_DECREF(r) Py_DECREF(r)
  #define __Pyx_GOTREF(r)
  #define __Pyx_GIVEREF(r)
  #define __Pyx_XINCREF(r) Py_XINCREF(r)
  #define __Pyx_XDECREF(r) Py_XDECREF(r)
  #define __Pyx_XGOTREF(r)
  #define __Pyx_XGIVEREF(r)
#endif
#define __Pyx_XDECREF_SET(r, v) do {\
        PyObject *tmp = (PyObject *) r;\
        r = v; __Pyx_XDECREF(tmp);\
    } while (0)
#define __Pyx_DECREF_SET(r, v) do {\
        PyObject *tmp = (PyObject *) r;\
        r = v; __Pyx_DECREF(tmp);\
    } while (0)
#define __Pyx_CLEAR(r)    do { PyObject* tmp = ((PyObject*)(r)); r = NULL; __Pyx_DECREF(tmp);} while(0)
#define __Pyx_XCLEAR(r)   do { if((r) != NULL) {PyObject* tmp = ((PyObject*)(r)); r = NULL; __Pyx_DECREF(tmp);}} while(0)

/* PyObjectGetAttrStr.proto */
#if CYTHON_USE_TYPE_SLOTS
static CYTHON_INLINE PyObject* __Pyx_PyObject_GetAttrStr(PyObject* obj, PyObject* attr_name);
#else
#define __Pyx_PyObject_GetAttrStr(o,n) PyObject_GetAttr(o,n)
#endif

/* GetBuiltinName.proto */
static PyObject *__Pyx_GetBuiltinName(PyObject *name);

/* RaiseDoubleKeywords.proto */
static void __Pyx_RaiseDoubleKeywordsError(const char* func_name, PyObject* kw_name);

/* ParseKeywords.proto */
static int __Pyx_ParseOptionalKeywords(PyObject *kwds, PyObject **argnames[],\
    PyObject *kwds2, PyObject *values[], Py_ssize_t num_pos_args,\
    const char* function_name);

/* RaiseArgTupleInvalid.proto */
static void __Pyx_RaiseArgtupleInvalid(const char* func_name, int exact,
    Py_ssize_t num_min, Py_ssize_t num_max, Py_ssize_t num_found);

/* ArgTypeTest.proto */
#define __Pyx_ArgTypeTest(obj, type, none_allowed, name, exact)\
    ((likely((Py_TYPE(obj) == type) | (none_allowed && (obj == Py_None)))) ? 1 :\
        __Pyx__ArgTypeTest(obj, type, name, exact))
static int __Pyx__ArgTypeTest(PyObject *obj, PyTypeObject *type, const char *name, int exact);

/* ListAppend.proto */
#if CYTHON_USE_PYLIST_INTERNALS && CYTHON_ASSUME_SAFE_MACROS
static CYTHON_INLINE int __Pyx_PyList_Append(PyObject* list, PyObject* x) {
    PyListObject* L = (PyListObject*) list;
    Py_ssize_t len = Py_SIZE(list);
    if (likely(L->allocated > len) & likely(len > (L->allocated >> 1))) {
        Py_INCREF(x);
        PyList_SET_ITEM(list, len, x);
        __Pyx_SET_SIZE(list, len + 1);
        return 0;
    }
    return PyList_Append(list, x);
}
#else
#define __Pyx_PyList_Append(L,x) PyList_Append(L,x)
#endif

/* PyCFunctionFastCall.proto */
#if CYTHON_FAST_PYCCALL
static CYTHON_INLINE PyObject *__Pyx_PyCFunction_FastCall(PyObject *func, PyObject **args, Py_ssize_t nargs);
#else
#define __Pyx_PyCFunction_FastCall(func, args, nargs)  (assert(0), NULL)
#endif

/* PyFunctionFastCall.proto */
#if CYTHON_FAST_PYCALL
#define __Pyx_PyFunction_FastCall(func, args, nargs)\
    __Pyx_PyFunction_FastCallDict((func), (args), (nargs), NULL)
#if 1 || PY_VERSION_HEX < 0x030600B1
static PyObject *__Pyx_PyFunction_FastCallDict(PyObject *func, PyObject **args, Py_ssize_t nargs, PyObject *kwargs);
#else
#define __Pyx_PyFunction_FastCallDict(func, args, nargs, kwargs) _PyFunction_FastCallDict(func, args, nargs, kwargs)
#endif
#define __Pyx_BUILD_ASSERT_EXPR(cond)\
    (sizeof(char [1 - 2*!(cond)]) - 1)
#ifndef Py_MEMBER_SIZE
#define Py_MEMBER_SIZE(type, member) sizeof(((type *)0)->member)
#endif
  static size_t __pyx_pyframe_localsplus_offset = 0;
  #include "frameobject.h"
  #define __Pxy_PyFrame_Initialize_Offsets()\
    ((void)__Pyx_BUILD_ASSERT_EXPR(sizeof(PyFrameObject) == offsetof(PyFrameObject, f_localsplus) + Py_MEMBER_SIZE(PyFrameObject, f_localsplus)),\
     (void)(__pyx_pyframe_localsplus_offset = ((size_t)PyFrame_Type.tp_basicsize) - Py_MEMBER_SIZE(PyFrameObject, f_localsplus)))
  #define __Pyx_PyFrame_GetLocalsplus(frame)\
    (assert(__pyx_pyframe_localsplus_offset), (PyObject **)(((char *)(frame)) + __pyx_pyframe_localsplus_offset))
#endif

/* PyObjectCall.proto */
#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_Call(PyObject *func, PyObject *arg, PyObject *kw);
#else
#define __Pyx_PyObject_Call(func, arg, kw) PyObject_Call(func, arg, kw)
#endif

/* PyObjectCall2Args.proto */
static CYTHON_UNUSED PyObject* __Pyx_PyObject_Call2Args(PyObject* function, PyObject* arg1, PyObject* arg2);

/* PyObjectCallMethO.proto */
#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallMethO(PyObject *func, PyObject *arg);
#endif

/* PyObjectCallOneArg.proto */
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallOneArg(PyObject *func, PyObject *arg);

/* PyObjectGetMethod.proto */
static int __Pyx_PyObject_GetMethod(PyObject *obj, PyObject *name, PyObject **method);

/* PyObjectCallMethod1.proto */
static PyObject* __Pyx_PyObject_CallMethod1(PyObject* obj, PyObject* method_name, PyObject* arg);

/* append.proto */
static CYTHON_INLINE int __Pyx_PyObject_Append(PyObject* L, PyObject* x);

/* GetItemInt.proto */
#define __Pyx_GetItemInt(o, i, type, is_signed, to_py_func, is_list, wraparound, boundscheck)\
    (__Pyx_fits_Py_ssize_t(i, type, is_signed) ?\
    __Pyx_GetItemInt_Fast(o, (Py_ssize_t)i, is_list, wraparound, boundscheck) :\
    (is_list ? (PyErr_SetString(PyExc_IndexError, "list index out of range"), (PyObject*)NULL) :\
               __Pyx_GetItemInt_Generic(o, to_py_func(i))))
#define __Pyx_GetItemInt_List(o, i, type, is_signed, to_py_func, is_list, wraparound, boundscheck)\
    (__Pyx_fits_Py_ssize_t(i, type, is_signed) ?\
    __Pyx_GetItemInt_List_Fast(o, (Py_ssize_t)i, wraparound, boundscheck) :\
    (PyErr_SetString(PyExc_IndexError, "list index out of range"), (PyObject*)NULL))
static CYTHON_INLINE PyObject *__Pyx_GetItemInt_List_Fast(PyObject *o, Py_ssize_t i,
                                                              int wraparound, int boundscheck);
#define __Pyx_GetItemInt_Tuple(o, i, type, is_signed, to_py_func, is_list, wraparound, boundscheck)\
    (__Pyx_fits_Py_ssize_t(i, type, is_signed) ?\
    __Pyx_GetItemInt_Tuple_Fast(o, (Py_ssize_t)i, wraparound, boundscheck) :\
    (PyErr_SetString(PyExc_IndexError, "tuple index out of range"), (PyObject*)NULL))
static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Tuple_Fast(PyObject *o, Py_ssize_t i,
                                                              int wraparound, int boundscheck);
static PyObject *__Pyx_GetItemInt_Generic(PyObject *o, PyObject* j);
static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i,
                                                     int is_list, int wraparound, int boundscheck);

/* BuildPyUnicode.proto */
static PyObject* __Pyx_PyUnicode_BuildFromAscii(Py_ssize_t ulength, char* chars, int clength,
                                                int prepend_sign, char padding_char);

/* CIntToPyUnicode.proto */
static CYTHON_INLINE PyObject* __Pyx_PyUnicode_From_int(int value, Py_ssize_t width, char padding_char, char format_char);

/* IncludeStringH.proto */
#include <string.h>

/* JoinPyUnicode.proto */
static PyObject* __Pyx_PyUnicode_Join(PyObject* value_tuple, Py_ssize_t value_count, Py_ssize_t result_ulength,
                                      Py_UCS4 max_char);

/* PyThreadStateGet.proto */
#if CYTHON_FAST_THREAD_STATE
#define __Pyx_PyThreadState_declare  PyThreadState *__pyx_tstate;
#define __Pyx_PyThreadState_assign  __pyx_tstate = __Pyx_PyThreadState_Current;
#define __Pyx_PyErr_Occurred()  __pyx_tstate->curexc_type
#else
#define __Pyx_PyThreadState_declare
#define __Pyx_PyThreadState_assign
#define __Pyx_PyErr_Occurred()  PyErr_Occurred()
#endif

/* PyErrFetchRestore.proto */
#if CYTHON_FAST_THREAD_STATE
#define __Pyx_PyErr_Clear() __Pyx_ErrRestore(NULL, NULL, NULL)
#define __Pyx_ErrRestoreWithState(type, value, tb)  __Pyx_ErrRestoreInState(PyThreadState_GET(), type, value, tb)
#define __Pyx_ErrFetchWithState(type, value, tb)    __Pyx_ErrFetchInState(PyThreadState_GET(), type, value, tb)
#define __Pyx_ErrRestore(type, value, tb)  __Pyx_ErrRestoreInState(__pyx_tstate, type, value, tb)
#define __Pyx_ErrFetch(type, value, tb)    __Pyx_ErrFetchInState(__pyx_tstate, type, value, tb)
static CYTHON_INLINE void __Pyx_ErrRestoreInState(PyThreadState *tstate, PyObject *type, PyObject *value, PyObject *tb);
static CYTHON_INLINE void __Pyx_ErrFetchInState(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb);
#if CYTHON_COMPILING_IN_CPYTHON
#define __Pyx_PyErr_SetNone(exc) (Py_INCREF(exc), __Pyx_ErrRestore((exc), NULL, NULL))
#else
#define __Pyx_PyErr_SetNone(exc) PyErr_SetNone(exc)
#endif
#else
#define __Pyx_PyErr_Clear() PyErr_Clear()
#define __Pyx_PyErr_SetNone(exc) PyErr_SetNone(exc)
#define __Pyx_ErrRestoreWithState(type, value, tb)  PyErr_Restore(type, value, tb)
#define __Pyx_ErrFetchWithState(type, value, tb)  PyErr_Fetch(type, value, tb)
#define __Pyx_ErrRestoreInState(tstate, type, value, tb)  PyErr_Restore(type, value, tb)
#define __Pyx_ErrFetchInState(tstate, type, value, tb)  PyErr_Fetch(type, value, tb)
#define __Pyx_ErrRestore(type, value, tb)  PyErr_Restore(type, value, tb)
#define __Pyx_ErrFetch(type, value, tb)  PyErr_Fetch(type, value, tb)
#endif

/* RaiseException.proto */
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject *cause);

/* PySequenceContains.proto */
static CYTHON_INLINE int __Pyx_PySequence_ContainsTF(PyObject* item, PyObject* seq, int eq) {
    int result = PySequence_Contains(seq, item);
    return unlikely(result < 0) ? result : (result == (eq == Py_EQ));
}

/* SetItemInt.proto */
#define __Pyx_SetItemInt(o, i, v, type, is_signed, to_py_func, is_list, wraparound, boundscheck)\
    (__Pyx_fits_Py_ssize_t(i, type, is_signed) ?\
    __Pyx_SetItemInt_Fast(o, (Py_ssize_t)i, v, is_list, wraparound, boundscheck) :\
    (is_list ? (PyErr_SetString(PyExc_IndexError, "list assignment index out of range"), -1) :\
               __Pyx_SetItemInt_Generic(o, to_py_func(i), v)))
static int __Pyx_SetItemInt_Generic(PyObject *o, PyObject *j, PyObject *v);
static CYTHON_INLINE int __Pyx_SetItemInt_Fast(PyObject *o, Py_ssize_t i, PyObject *v,
                                               int is_list, int wraparound, int boundscheck);

/* DictGetItem.proto */
#if PY_MAJOR_VERSION >= 3 && !CYTHON_COMPILING_IN_PYPY
static PyObject *__Pyx_PyDict_GetItem(PyObject *d, PyObject* key);
#define __Pyx_PyObject_Dict_GetItem(obj, name)\
    (likely(PyDict_CheckExact(obj)) ?\
     __Pyx_PyDict_GetItem(obj, name) : PyObject_GetItem(obj, name))
#else
#define __Pyx_PyDict_GetItem(d, key) PyObject_GetItem(d, key)
#define __Pyx_PyObject_Dict_GetItem(obj, name)  PyObject_GetItem(obj, name)
#endif

/* ObjectGetItem.proto */
#if CYTHON_USE_TYPE_SLOTS
static CYTHON_INLINE PyObject *__Pyx_PyObject_GetItem(PyObject *obj, PyObject* key);
#else
#define __Pyx_PyObject_GetItem(obj, key)  PyObject_GetItem(obj, key)
#endif

/* PyDictVersioning.proto */
#if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_TYPE_SLOTS
#define __PYX_DICT_VERSION_INIT  ((PY_UINT64_T) -1)
#define __PYX_GET_DICT_VERSION(dict)  (((PyDictObject*)(dict))->ma_version_tag)
#define __PYX_UPDATE_DICT_CACHE(dict, value, cache_var, version_var)\
    (version_var) = __PYX_GET_DICT_VERSION(dict);\
    (cache_var) = (value);
#define __PYX_PY_DICT_LOOKUP_IF_MODIFIED(VAR, DICT, LOOKUP) {\
    static PY_UINT64_T __pyx_dict_version = 0;\
    static PyObject *__pyx_dict_cached_value = NULL;\
    if (likely(__PYX_GET_DICT_VERSION(DICT) == __pyx_dict_version)) {\
        (VAR) = __pyx_dict_cached_value;\
    } else {\
        (VAR) = __pyx_dict_cached_value = (LOOKUP);\
        __pyx_dict_version = __PYX_GET_DICT_VERSION(DICT);\
    }\
}
static CYTHON_INLINE PY_UINT64_T __Pyx_get_tp_dict_version(PyObject *obj);
static CYTHON_INLINE PY_UINT64_T __Pyx_get_object_dict_version(PyObject *obj);
static CYTHON_INLINE int __Pyx_object_dict_version_matches(PyObject* obj, PY_UINT64_T tp_dict_version, PY_UINT64_T obj_dict_version);
#else
#define __PYX_GET_DICT_VERSION(dict)  (0)
#define __PYX_UPDATE_DICT_CACHE(dict, value, cache_var, version_var)
#define __PYX_PY_DICT_LOOKUP_IF_MODIFIED(VAR, DICT, LOOKUP)  (VAR) = (LOOKUP);
#endif

/* GetModuleGlobalName.proto */
#if CYTHON_USE_DICT_VERSIONS
#define __Pyx_GetModuleGlobalName(var, name)  {\
    static PY_UINT64_T __pyx_dict_version = 0;\
    static PyObject *__pyx_dict_cached_value = NULL;\
    (var) = (likely(__pyx_dict_version == __PYX_GET_DICT_VERSION(__pyx_d))) ?\
        (likely(__pyx_dict_cached_value) ? __Pyx_NewRef(__pyx_dict_cached_value) : __Pyx_GetBuiltinName(name)) :\
        __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
}
#define __Pyx_GetModuleGlobalNameUncached(var, name)  {\
    PY_UINT64_T __pyx_dict_version;\
    PyObject *__pyx_dict_cached_value;\
    (var) = __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
}
static PyObject *__Pyx__GetModuleGlobalName(PyObject *name, PY_UINT64_T *dict_version, PyObject **dict_cached_value);
#else
#define __Pyx_GetModuleGlobalName(var, name)  (var) = __Pyx__GetModuleGlobalName(name)
#define __Pyx_GetModuleGlobalNameUncached(var, name)  (var) = __Pyx__GetModuleGlobalName(name)
static CYTHON_INLINE PyObject *__Pyx__GetModuleGlobalName(PyObject *name);
#endif

/* IterFinish.proto */
static CYTHON_INLINE int __Pyx_IterFinish(void);

/* set_iter.proto */
static CYTHON_INLINE PyObject* __Pyx_set_iterator(PyObject* iterable, int is_set,
                                                  Py_ssize_t* p_orig_length, int* p_source_is_set);
static CYTHON_INLINE int __Pyx_set_iter_next(
        PyObject* iter_obj, Py_ssize_t orig_length,
        Py_ssize_t* ppos, PyObject **value,
        int source_is_set);

/* PyObjectFormatSimple.proto */
#if CYTHON_COMPILING_IN_PYPY
    #define __Pyx_PyObject_FormatSimple(s, f) (\
        likely(PyUnicode_CheckExact(s)) ? (Py_INCREF(s), s) :\
        PyObject_Format(s, f))
#elif PY_MAJOR_VERSION < 3
    #define __Pyx_PyObject_FormatSimple(s, f) (\
        likely(PyUnicode_CheckExact(s)) ? (Py_INCREF(s), s) :\
        likely(PyString_CheckExact(s)) ? PyUnicode_FromEncodedObject(s, NULL, "strict") :\
        PyObject_Format(s, f))
#elif CYTHON_USE_TYPE_SLOTS
    #define __Pyx_PyObject_FormatSimple(s, f) (\
        likely(PyUnicode_CheckExact(s)) ? (Py_INCREF(s), s) :\
        likely(PyLong_CheckExact(s)) ? PyLong_Type.tp_str(s) :\
        likely(PyFloat_CheckExact(s)) ? PyFloat_Type.tp_str(s) :\
        PyObject_Format(s, f))
#else
    #define __Pyx_PyObject_FormatSimple(s, f) (\
        likely(PyUnicode_CheckExact(s)) ? (Py_INCREF(s), s) :\
        PyObject_Format(s, f))
#endif

/* GetTopmostException.proto */
#if CYTHON_USE_EXC_INFO_STACK
static _PyErr_StackItem * __Pyx_PyErr_GetTopmostException(PyThreadState *tstate);
#endif

/* SaveResetException.proto */
#if CYTHON_FAST_THREAD_STATE
#define __Pyx_ExceptionSave(type, value, tb)  __Pyx__ExceptionSave(__pyx_tstate, type, value, tb)
static CYTHON_INLINE void __Pyx__ExceptionSave(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb);
#define __Pyx_ExceptionReset(type, value, tb)  __Pyx__ExceptionReset(__pyx_tstate, type, value, tb)
static CYTHON_INLINE void __Pyx__ExceptionReset(PyThreadState *tstate, PyObject *type, PyObject *value, PyObject *tb);
#else
#define __Pyx_ExceptionSave(type, value, tb)   PyErr_GetExcInfo(type, value, tb)
#define __Pyx_ExceptionReset(type, value, tb)  PyErr_SetExcInfo(type, value, tb)
#endif

/* PyErrExceptionMatches.proto */
#if CYTHON_FAST_THREAD_STATE
#define __Pyx_PyErr_ExceptionMatches(err) __Pyx_PyErr_ExceptionMatchesInState(__pyx_tstate, err)
static CYTHON_INLINE int __Pyx_PyErr_ExceptionMatchesInState(PyThreadState* tstate, PyObject* err);
#else
#define __Pyx_PyErr_ExceptionMatches(err)  PyErr_ExceptionMatches(err)
#endif

/* GetException.proto */
#if CYTHON_FAST_THREAD_STATE
#define __Pyx_GetException(type, value, tb)  __Pyx__GetException(__pyx_tstate, type, value, tb)
static int __Pyx__GetException(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb);
#else
static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb);
#endif

/* ListCompAppend.proto */
#if CYTHON_USE_PYLIST_INTERNALS && CYTHON_ASSUME_SAFE_MACROS
static CYTHON_INLINE int __Pyx_ListComp_Append(PyObject* list, PyObject* x) {
    PyListObject* L = (PyListObject*) list;
    Py_ssize_t len = Py_SIZE(list);
    if (likely(L->allocated > len)) {
        Py_INCREF(x);
        PyList_SET_ITEM(list, len, x);
        __Pyx_SET_SIZE(list, len + 1);
        return 0;
    }
    return PyList_Append(list, x);
}
#else
#define __Pyx_ListComp_Append(L,x) PyList_Append(L,x)
#endif

/* pop_index.proto */
static PyObject* __Pyx__PyObject_PopNewIndex(PyObject* L, PyObject* py_ix);
static PyObject* __Pyx__PyObject_PopIndex(PyObject* L, PyObject* py_ix);
#if CYTHON_USE_PYLIST_INTERNALS && CYTHON_ASSUME_SAFE_MACROS
static PyObject* __Pyx__PyList_PopIndex(PyObject* L, PyObject* py_ix, Py_ssize_t ix);
#define __Pyx_PyObject_PopIndex(L, py_ix, ix, is_signed, type, to_py_func) (\
    (likely(PyList_CheckExact(L) && __Pyx_fits_Py_ssize_t(ix, type, is_signed))) ?\
        __Pyx__PyList_PopIndex(L, py_ix, ix) : (\
        (unlikely((py_ix) == Py_None)) ? __Pyx__PyObject_PopNewIndex(L, to_py_func(ix)) :\
            __Pyx__PyObject_PopIndex(L, py_ix)))
#define __Pyx_PyList_PopIndex(L, py_ix, ix, is_signed, type, to_py_func) (\
    __Pyx_fits_Py_ssize_t(ix, type, is_signed) ?\
        __Pyx__PyList_PopIndex(L, py_ix, ix) : (\
        (unlikely((py_ix) == Py_None)) ? __Pyx__PyObject_PopNewIndex(L, to_py_func(ix)) :\
            __Pyx__PyObject_PopIndex(L, py_ix)))
#else
#define __Pyx_PyList_PopIndex(L, py_ix, ix, is_signed, type, to_py_func)\
    __Pyx_PyObject_PopIndex(L, py_ix, ix, is_signed, type, to_py_func)
#define __Pyx_PyObject_PopIndex(L, py_ix, ix, is_signed, type, to_py_func) (\
    (unlikely((py_ix) == Py_None)) ? __Pyx__PyObject_PopNewIndex(L, to_py_func(ix)) :\
        __Pyx__PyObject_PopIndex(L, py_ix))
#endif

/* PyObjectCallNoArg.proto */
#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallNoArg(PyObject *func);
#else
#define __Pyx_PyObject_CallNoArg(func) __Pyx_PyObject_Call(func, __pyx_empty_tuple, NULL)
#endif

/* PyObjectCallMethod0.proto */
static PyObject* __Pyx_PyObject_CallMethod0(PyObject* obj, PyObject* method_name);

/* RaiseNeedMoreValuesToUnpack.proto */
static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index);

/* RaiseTooManyValuesToUnpack.proto */
static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected);

/* UnpackItemEndCheck.proto */
static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected);

/* RaiseNoneIterError.proto */
static CYTHON_INLINE void __Pyx_RaiseNoneNotIterableError(void);

/* UnpackTupleError.proto */
static void __Pyx_UnpackTupleError(PyObject *, Py_ssize_t index);

/* UnpackTuple2.proto */
#define __Pyx_unpack_tuple2(tuple, value1, value2, is_tuple, has_known_size, decref_tuple)\
    (likely(is_tuple || PyTuple_Check(tuple)) ?\
        (likely(has_known_size || PyTuple_GET_SIZE(tuple) == 2) ?\
            __Pyx_unpack_tuple2_exact(tuple, value1, value2, decref_tuple) :\
            (__Pyx_UnpackTupleError(tuple, 2), -1)) :\
        __Pyx_unpack_tuple2_generic(tuple, value1, value2, has_known_size, decref_tuple))
static CYTHON_INLINE int __Pyx_unpack_tuple2_exact(
    PyObject* tuple, PyObject** value1, PyObject** value2, int decref_tuple);
static int __Pyx_unpack_tuple2_generic(
    PyObject* tuple, PyObject** value1, PyObject** value2, int has_known_size, int decref_tuple);

/* dict_iter.proto */
static CYTHON_INLINE PyObject* __Pyx_dict_iterator(PyObject* dict, int is_dict, PyObject* method_name,
                                                   Py_ssize_t* p_orig_length, int* p_is_dict);
static CYTHON_INLINE int __Pyx_dict_iter_next(PyObject* dict_or_iter, Py_ssize_t orig_length, Py_ssize_t* ppos,
                                              PyObject** pkey, PyObject** pvalue, PyObject** pitem, int is_dict);

/* CallNextTpDealloc.proto */
static void __Pyx_call_next_tp_dealloc(PyObject* obj, destructor current_tp_dealloc);

/* CallNextTpTraverse.proto */
static int __Pyx_call_next_tp_traverse(PyObject* obj, visitproc v, void *a, traverseproc current_tp_traverse);

/* CallNextTpClear.proto */
static void __Pyx_call_next_tp_clear(PyObject* obj, inquiry current_tp_dealloc);

/* TypeImport.proto */
#ifndef __PYX_HAVE_RT_ImportType_proto
#define __PYX_HAVE_RT_ImportType_proto
enum __Pyx_ImportType_CheckSize {
   __Pyx_ImportType_CheckSize_Error = 0,
   __Pyx_ImportType_CheckSize_Warn = 1,
   __Pyx_ImportType_CheckSize_Ignore = 2
};
static PyTypeObject *__Pyx_ImportType(PyObject* module, const char *module_name, const char *class_name, size_t size, enum __Pyx_ImportType_CheckSize check_size);
#endif

/* GetVTable.proto */
static void* __Pyx_GetVtable(PyObject *dict);

/* PyObject_GenericGetAttrNoDict.proto */
#if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
static CYTHON_INLINE PyObject* __Pyx_PyObject_GenericGetAttrNoDict(PyObject* obj, PyObject* attr_name);
#else
#define __Pyx_PyObject_GenericGetAttrNoDict PyObject_GenericGetAttr
#endif

/* PyObject_GenericGetAttr.proto */
#if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
static PyObject* __Pyx_PyObject_GenericGetAttr(PyObject* obj, PyObject* attr_name);
#else
#define __Pyx_PyObject_GenericGetAttr PyObject_GenericGetAttr
#endif

/* SetVTable.proto */
static int __Pyx_SetVtable(PyObject *dict, void *vtable);

/* Import.proto */
static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level);

/* CLineInTraceback.proto */
#ifdef CYTHON_CLINE_IN_TRACEBACK
#define __Pyx_CLineForTraceback(tstate, c_line)  (((CYTHON_CLINE_IN_TRACEBACK)) ? c_line : 0)
#else
static int __Pyx_CLineForTraceback(PyThreadState *tstate, int c_line);
#endif

/* CodeObjectCache.proto */
typedef struct {
    PyCodeObject* code_object;
    int code_line;
} __Pyx_CodeObjectCacheEntry;
struct __Pyx_CodeObjectCache {
    int count;
    int max_count;
    __Pyx_CodeObjectCacheEntry* entries;
};
static struct __Pyx_CodeObjectCache __pyx_code_cache = {0,0,NULL};
static int __pyx_bisect_code_objects(__Pyx_CodeObjectCacheEntry* entries, int count, int code_line);
static PyCodeObject *__pyx_find_code_object(int code_line);
static void __pyx_insert_code_object(int code_line, PyCodeObject* code_object);

/* AddTraceback.proto */
static void __Pyx_AddTraceback(const char *funcname, int c_line,
                               int py_line, const char *filename);

/* CIntToPy.proto */
static CYTHON_INLINE PyObject* __Pyx_PyInt_From_int(int value);

/* CIntToPy.proto */
static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value);

/* CIntFromPy.proto */
static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *);

/* CIntFromPy.proto */
static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *);

/* FastTypeChecks.proto */
#if CYTHON_COMPILING_IN_CPYTHON
#define __Pyx_TypeCheck(obj, type) __Pyx_IsSubtype(Py_TYPE(obj), (PyTypeObject *)type)
static CYTHON_INLINE int __Pyx_IsSubtype(PyTypeObject *a, PyTypeObject *b);
static CYTHON_INLINE int __Pyx_PyErr_GivenExceptionMatches(PyObject *err, PyObject *type);
static CYTHON_INLINE int __Pyx_PyErr_GivenExceptionMatches2(PyObject *err, PyObject *type1, PyObject *type2);
#else
#define __Pyx_TypeCheck(obj, type) PyObject_TypeCheck(obj, (PyTypeObject *)type)
#define __Pyx_PyErr_GivenExceptionMatches(err, type) PyErr_GivenExceptionMatches(err, type)
#define __Pyx_PyErr_GivenExceptionMatches2(err, type1, type2) (PyErr_GivenExceptionMatches(err, type1) || PyErr_GivenExceptionMatches(err, type2))
#endif
#define __Pyx_PyException_Check(obj) __Pyx_TypeCheck(obj, PyExc_Exception)

/* CheckBinaryVersion.proto */
static int __Pyx_check_binary_version(void);

/* InitStrings.proto */
static int __Pyx_InitStrings(__Pyx_StringTabEntry *t);

static void __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_edge(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, int __pyx_skip_dispatch, struct __pyx_opt_args_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_edge *__pyx_optional_args); /* proto*/
static void __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_set_edge_weight(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, double __pyx_v_weight, int __pyx_skip_dispatch); /* proto*/
static void __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_remove_edge(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, int __pyx_skip_dispatch); /* proto*/
static int __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_has_edge(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, int __pyx_skip_dispatch); /* proto*/
static double __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_get_edge_weight(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, int __pyx_skip_dispatch); /* proto*/
static void __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_vertex(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v, int __pyx_skip_dispatch); /* proto*/
static void __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_vertices(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_vertices, int __pyx_skip_dispatch); /* proto*/
static void __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_remove_vertex(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v, int __pyx_skip_dispatch); /* proto*/
static PyObject *__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_get_children(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v, int __pyx_skip_dispatch); /* proto*/
static PyObject *__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_get_parents(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v, int __pyx_skip_dispatch); /* proto*/

/* Module declarations from 'cygraph.graph_.graph' */
static PyTypeObject *__pyx_ptype_7cygraph_6graph__5graph_Graph = 0;

/* Module declarations from 'cygraph.graph_.dynamic_graph' */
static PyTypeObject *__pyx_ptype_7cygraph_6graph__13dynamic_graph_DynamicGraph = 0;
#define __Pyx_MODULE_NAME "cygraph.graph_.dynamic_graph"
extern int __pyx_module_is_main_cygraph__graph___dynamic_graph;
int __pyx_module_is_main_cygraph__graph___dynamic_graph = 0;

/* Implementation of 'cygraph.graph_.dynamic_graph' */
static PyObject *__pyx_builtin_range;
static PyObject *__pyx_builtin_enumerate;
static PyObject *__pyx_builtin_ValueError;
static const char __pyx_k__4[] = ".";
static const char __pyx_k__6[] = ", ";
static const char __pyx_k_v1[] = "v1";
static const char __pyx_k_v2[] = "v2";
static const char __pyx_k_key[] = "key";
static const char __pyx_k_pop[] = "pop";
static const char __pyx_k_val[] = "val";
static const char __pyx_k_Edge[] = "Edge (";
static const char __pyx_k_edge[] = "edge";
static const char __pyx_k_main[] = "__main__";
static const char __pyx_k_name[] = "__name__";
static const char __pyx_k_rows[] = " rows.";
static const char __pyx_k_test[] = "__test__";
static const char __pyx_k_warn[] = "warn";
static const char __pyx_k_edges[] = "edges";
static const char __pyx_k_graph[] = "graph";
static const char __pyx_k_index[] = "index";
static const char __pyx_k_items[] = "items";
static const char __pyx_k_range[] = "range";
static const char __pyx_k_append[] = "append";
static const char __pyx_k_import[] = "__import__";
static const char __pyx_k_remove[] = "remove";
static const char __pyx_k_vertex[] = "vertex";
static const char __pyx_k_weight[] = "weight";
static const char __pyx_k_add_edge[] = "add_edge";
static const char __pyx_k_directed[] = "directed";
static const char __pyx_k_has_edge[] = "has_edge";
static const char __pyx_k_vertices[] = "vertices";
static const char __pyx_k_warnings[] = "warnings";
static const char __pyx_k_enumerate[] = "enumerate";
static const char __pyx_k_ValueError[] = "ValueError";
static const char __pyx_k_add_vertex[] = "add_vertex";
static const char __pyx_k_pyx_vtable[] = "__pyx_vtable__";
static const char __pyx_k_get_parents[] = "get_parents";
static const char __pyx_k_remove_edge[] = "remove_edge";
static const char __pyx_k_DynamicGraph[] = "DynamicGraph";
static const char __pyx_k_add_vertices[] = "add_vertices";
static const char __pyx_k_get_children[] = "get_children";
static const char __pyx_k_is_of_length[] = " is of length ";
static const char __pyx_k_vertices_and[] = " vertices and ";
static const char __pyx_k_dynamic_graph[] = "dynamic_graph";
static const char __pyx_k_remove_vertex[] = "remove_vertex";
static const char __pyx_k_adjacency_list[] = "adjacency_list";
static const char __pyx_k_already_exists[] = ") already exists.";
static const char __pyx_k_edge_attributes[] = "edge_attributes";
static const char __pyx_k_get_edge_weight[] = "get_edge_weight";
static const char __pyx_k_in_vertices_and[] = " in `vertices` and ";
static const char __pyx_k_set_edge_weight[] = "set_edge_weight";
static const char __pyx_k_adjacency_matrix[] = "adjacency_matrix";
static const char __pyx_k_in_adjacency_list[] = " in `adjacency_list`";
static const char __pyx_k_vertex_attributes[] = "vertex_attributes";
static const char __pyx_k_cline_in_traceback[] = "cline_in_traceback";
static const char __pyx_k_is_already_in_graph[] = " is already in graph";
static const char __pyx_k_set_vertex_attribtue[] = "set_vertex_attribtue";
static const char __pyx_k_is_already_in_graph_2[] = " is already in graph.";
static const char __pyx_k_rebuild_dynamic_graph[] = "rebuild_dynamic_graph";
static const char __pyx_k_Edge_v1_v2_doesn_t_exist[] = "Edge ({v1}, {v2}) doesn't exist.";
static const char __pyx_k_and_the_number_of_rows_is[] = " and the number of rows is ";
static const char __pyx_k_edge_v1_v2_is_not_in_graph[] = "edge ({v1}, {v2}) is not in graph.";
static const char __pyx_k_cygraph_graph__dynamic_graph[] = "cygraph.graph_.dynamic_graph";
static const char __pyx_k_Different_number_of_vertices_as[] = "Different number of vertices as rows in adjacency matrix. ";
static const char __pyx_k_Different_number_of_vertices_in[] = "Different number of vertices in `vertices` than in `adjacency_list`.";
static const char __pyx_k_Adjacency_matrix_must_be_a_squar[] = "Adjacency matrix must be a square. Row ";
static const char __pyx_k_Attempting_to_remove_edge_that_d[] = "Attempting to remove edge that doesn't exist.";
static const char __pyx_k_Implementation_of_graph_data_str[] = "Implementation of graph data structure with python list as adjacency\nmatrix.\n";
static const char __pyx_k_both_adjacency_list_and_adjacenc[] = "both adjacency list and adjacency matrix specified.";
static const char __pyx_k_cygraph_graph__dynamic_graph_pyx[] = "cygraph/graph_/dynamic_graph.pyx";
static PyObject *__pyx_kp_u_Adjacency_matrix_must_be_a_squar;
static PyObject *__pyx_kp_u_Attempting_to_remove_edge_that_d;
static PyObject *__pyx_kp_u_Different_number_of_vertices_as;
static PyObject *__pyx_kp_u_Different_number_of_vertices_in;
static PyObject *__pyx_n_s_DynamicGraph;
static PyObject *__pyx_kp_u_Edge;
static PyObject *__pyx_kp_u_Edge_v1_v2_doesn_t_exist;
static PyObject *__pyx_n_s_ValueError;
static PyObject *__pyx_kp_u__4;
static PyObject *__pyx_kp_u__6;
static PyObject *__pyx_n_s_add_edge;
static PyObject *__pyx_n_s_add_vertex;
static PyObject *__pyx_n_s_add_vertices;
static PyObject *__pyx_n_s_adjacency_list;
static PyObject *__pyx_n_s_adjacency_matrix;
static PyObject *__pyx_kp_u_already_exists;
static PyObject *__pyx_kp_u_and_the_number_of_rows_is;
static PyObject *__pyx_n_s_append;
static PyObject *__pyx_kp_u_both_adjacency_list_and_adjacenc;
static PyObject *__pyx_n_s_cline_in_traceback;
static PyObject *__pyx_n_s_cygraph_graph__dynamic_graph;
static PyObject *__pyx_kp_s_cygraph_graph__dynamic_graph_pyx;
static PyObject *__pyx_n_s_directed;
static PyObject *__pyx_n_s_dynamic_graph;
static PyObject *__pyx_n_s_edge;
static PyObject *__pyx_n_s_edge_attributes;
static PyObject *__pyx_kp_u_edge_v1_v2_is_not_in_graph;
static PyObject *__pyx_n_s_edges;
static PyObject *__pyx_n_s_enumerate;
static PyObject *__pyx_n_s_get_children;
static PyObject *__pyx_n_s_get_edge_weight;
static PyObject *__pyx_n_s_get_parents;
static PyObject *__pyx_n_s_graph;
static PyObject *__pyx_n_s_has_edge;
static PyObject *__pyx_n_s_import;
static PyObject *__pyx_kp_u_in_adjacency_list;
static PyObject *__pyx_kp_u_in_vertices_and;
static PyObject *__pyx_n_s_index;
static PyObject *__pyx_kp_u_is_already_in_graph;
static PyObject *__pyx_kp_u_is_already_in_graph_2;
static PyObject *__pyx_kp_u_is_of_length;
static PyObject *__pyx_n_s_items;
static PyObject *__pyx_n_s_key;
static PyObject *__pyx_n_s_main;
static PyObject *__pyx_n_s_name;
static PyObject *__pyx_n_s_pop;
static PyObject *__pyx_n_s_pyx_vtable;
static PyObject *__pyx_n_s_range;
static PyObject *__pyx_n_s_rebuild_dynamic_graph;
static PyObject *__pyx_n_s_remove;
static PyObject *__pyx_n_s_remove_edge;
static PyObject *__pyx_n_s_remove_vertex;
static PyObject *__pyx_kp_u_rows;
static PyObject *__pyx_n_s_set_edge_weight;
static PyObject *__pyx_n_s_set_vertex_attribtue;
static PyObject *__pyx_n_s_test;
static PyObject *__pyx_n_s_v1;
static PyObject *__pyx_n_s_v2;
static PyObject *__pyx_n_s_val;
static PyObject *__pyx_n_s_vertex;
static PyObject *__pyx_n_s_vertex_attributes;
static PyObject *__pyx_n_s_vertices;
static PyObject *__pyx_kp_u_vertices_and;
static PyObject *__pyx_n_s_warn;
static PyObject *__pyx_n_s_warnings;
static PyObject *__pyx_n_s_weight;
static int __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph___cinit__(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, struct __pyx_obj_7cygraph_6graph__5graph_Graph *__pyx_v_graph, int __pyx_v_directed, PyObject *__pyx_v_vertices, PyObject *__pyx_v_adjacency_matrix, PyObject *__pyx_v_adjacency_list); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_2__copy__(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_4__reduce__(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_5edges___get__(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_6add_edge(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, double __pyx_v_weight); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_8set_edge_weight(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, double __pyx_v_weight); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_10remove_edge(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_12has_edge(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_14get_edge_weight(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_16add_vertex(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_18add_vertices(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_vertices); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_20remove_vertex(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_22get_children(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_24get_parents(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_17_adjacency_matrix___get__(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self); /* proto */
static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_rebuild_dynamic_graph(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vertex_attributes, PyObject *__pyx_v_edge_attributes, PyObject *__pyx_v_vertices, PyObject *__pyx_v_directed, PyObject *__pyx_v_adjacency_matrix); /* proto */
static PyObject *__pyx_tp_new_7cygraph_6graph__13dynamic_graph_DynamicGraph(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
static PyObject *__pyx_float_1_0;
static PyObject *__pyx_k_;
static PyObject *__pyx_k__2;
static PyObject *__pyx_k__3;
static PyObject *__pyx_tuple__5;
static PyObject *__pyx_tuple__7;
static PyObject *__pyx_tuple__8;
static PyObject *__pyx_tuple__9;
static PyObject *__pyx_codeobj__10;
/* Late includes */

/* "cygraph/graph_/dynamic_graph.pyx":62
 *     """
 * 
 *     def __cinit__(self, Graph graph=None, bint directed=False, list vertices=[],             # <<<<<<<<<<<<<<
 *             list adjacency_matrix=[], list adjacency_list=[]):
 * 
 */

/* Python wrapper */
static int __pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static int __pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
  struct __pyx_obj_7cygraph_6graph__5graph_Graph *__pyx_v_graph = 0;
  int __pyx_v_directed;
  PyObject *__pyx_v_vertices = 0;
  PyObject *__pyx_v_adjacency_matrix = 0;
  PyObject *__pyx_v_adjacency_list = 0;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  int __pyx_r;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("__cinit__ (wrapper)", 0);
  {
    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s_graph,&__pyx_n_s_directed,&__pyx_n_s_vertices,&__pyx_n_s_adjacency_matrix,&__pyx_n_s_adjacency_list,0};
    PyObject* values[5] = {0,0,0,0,0};
    values[0] = (PyObject *)((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)Py_None);
    values[2] = __pyx_k_;
    values[3] = __pyx_k__2;
    values[4] = __pyx_k__3;
    if (unlikely(__pyx_kwds)) {
      Py_ssize_t kw_args;
      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
      switch (pos_args) {
        case  5: values[4] = PyTuple_GET_ITEM(__pyx_args, 4);
        CYTHON_FALLTHROUGH;
        case  4: values[3] = PyTuple_GET_ITEM(__pyx_args, 3);
        CYTHON_FALLTHROUGH;
        case  3: values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
        CYTHON_FALLTHROUGH;
        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
        CYTHON_FALLTHROUGH;
        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
        CYTHON_FALLTHROUGH;
        case  0: break;
        default: goto __pyx_L5_argtuple_error;
      }
      kw_args = PyDict_Size(__pyx_kwds);
      switch (pos_args) {
        case  0:
        if (kw_args > 0) {
          PyObject* value = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_graph);
          if (value) { values[0] = value; kw_args--; }
        }
        CYTHON_FALLTHROUGH;
        case  1:
        if (kw_args > 0) {
          PyObject* value = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_directed);
          if (value) { values[1] = value; kw_args--; }
        }
        CYTHON_FALLTHROUGH;
        case  2:
        if (kw_args > 0) {
          PyObject* value = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_vertices);
          if (value) { values[2] = value; kw_args--; }
        }
        CYTHON_FALLTHROUGH;
        case  3:
        if (kw_args > 0) {
          PyObject* value = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_adjacency_matrix);
          if (value) { values[3] = value; kw_args--; }
        }
        CYTHON_FALLTHROUGH;
        case  4:
        if (kw_args > 0) {
          PyObject* value = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_adjacency_list);
          if (value) { values[4] = value; kw_args--; }
        }
      }
      if (unlikely(kw_args > 0)) {
        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "__cinit__") < 0)) __PYX_ERR(0, 62, __pyx_L3_error)
      }
    } else {
      switch (PyTuple_GET_SIZE(__pyx_args)) {
        case  5: values[4] = PyTuple_GET_ITEM(__pyx_args, 4);
        CYTHON_FALLTHROUGH;
        case  4: values[3] = PyTuple_GET_ITEM(__pyx_args, 3);
        CYTHON_FALLTHROUGH;
        case  3: values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
        CYTHON_FALLTHROUGH;
        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
        CYTHON_FALLTHROUGH;
        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
        CYTHON_FALLTHROUGH;
        case  0: break;
        default: goto __pyx_L5_argtuple_error;
      }
    }
    __pyx_v_graph = ((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)values[0]);
    if (values[1]) {
      __pyx_v_directed = __Pyx_PyObject_IsTrue(values[1]); if (unlikely((__pyx_v_directed == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 62, __pyx_L3_error)
    } else {
      __pyx_v_directed = ((int)0);
    }
    __pyx_v_vertices = ((PyObject*)values[2]);
    __pyx_v_adjacency_matrix = ((PyObject*)values[3]);
    __pyx_v_adjacency_list = ((PyObject*)values[4]);
  }
  goto __pyx_L4_argument_unpacking_done;
  __pyx_L5_argtuple_error:;
  __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 0, 5, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 62, __pyx_L3_error)
  __pyx_L3_error:;
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.__cinit__", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __Pyx_RefNannyFinishContext();
  return -1;
  __pyx_L4_argument_unpacking_done:;
  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_graph), __pyx_ptype_7cygraph_6graph__5graph_Graph, 1, "graph", 0))) __PYX_ERR(0, 62, __pyx_L1_error)
  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_vertices), (&PyList_Type), 1, "vertices", 1))) __PYX_ERR(0, 62, __pyx_L1_error)
  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_adjacency_matrix), (&PyList_Type), 1, "adjacency_matrix", 1))) __PYX_ERR(0, 63, __pyx_L1_error)
  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_adjacency_list), (&PyList_Type), 1, "adjacency_list", 1))) __PYX_ERR(0, 63, __pyx_L1_error)
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph___cinit__(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self), __pyx_v_graph, __pyx_v_directed, __pyx_v_vertices, __pyx_v_adjacency_matrix, __pyx_v_adjacency_list);

  /* function exit code */
  goto __pyx_L0;
  __pyx_L1_error:;
  __pyx_r = -1;
  __pyx_L0:;
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static int __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph___cinit__(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, struct __pyx_obj_7cygraph_6graph__5graph_Graph *__pyx_v_graph, int __pyx_v_directed, PyObject *__pyx_v_vertices, PyObject *__pyx_v_adjacency_matrix, PyObject *__pyx_v_adjacency_list) {
  int __pyx_v_size;
  int __pyx_v_i;
  int __pyx_v_r;
  int __pyx_v_row_size;
  int __pyx_v_n_rows;
  int __pyx_v_n_vertices;
  int __pyx_v_n_adj_list_vertices;
  PyObject *__pyx_v_v = 0;
  CYTHON_UNUSED int __pyx_v__;
  PyObject *__pyx_v_edge = NULL;
  PyObject *__pyx_v_row = NULL;
  int __pyx_v_vertex;
  int __pyx_v_vertex_;
  int __pyx_r;
  __Pyx_RefNannyDeclarations
  int __pyx_t_1;
  int __pyx_t_2;
  PyObject *__pyx_t_3 = NULL;
  Py_ssize_t __pyx_t_4;
  int __pyx_t_5;
  int __pyx_t_6;
  int __pyx_t_7;
  int __pyx_t_8;
  int __pyx_t_9;
  int __pyx_t_10;
  int __pyx_t_11;
  PyObject *__pyx_t_12 = NULL;
  PyObject *(*__pyx_t_13)(PyObject *);
  PyObject *__pyx_t_14 = NULL;
  PyObject *__pyx_t_15 = NULL;
  Py_ssize_t __pyx_t_16;
  Py_UCS4 __pyx_t_17;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("__cinit__", 0);

  /* "cygraph/graph_/dynamic_graph.pyx":71
 *         cdef list col
 * 
 *         if graph is not None:             # <<<<<<<<<<<<<<
 * 
 *             size = len(graph.vertices)
 */
  __pyx_t_1 = (((PyObject *)__pyx_v_graph) != Py_None);
  __pyx_t_2 = (__pyx_t_1 != 0);
  if (__pyx_t_2) {

    /* "cygraph/graph_/dynamic_graph.pyx":73
 *         if graph is not None:
 * 
 *             size = len(graph.vertices)             # <<<<<<<<<<<<<<
 *             self._adjacency_matrix = []
 *             for i in range(size):
 */
    __pyx_t_3 = __pyx_v_graph->vertices;
    __Pyx_INCREF(__pyx_t_3);
    if (unlikely(__pyx_t_3 == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
      __PYX_ERR(0, 73, __pyx_L1_error)
    }
    __pyx_t_4 = PyList_GET_SIZE(__pyx_t_3); if (unlikely(__pyx_t_4 == ((Py_ssize_t)-1))) __PYX_ERR(0, 73, __pyx_L1_error)
    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
    __pyx_v_size = __pyx_t_4;

    /* "cygraph/graph_/dynamic_graph.pyx":74
 * 
 *             size = len(graph.vertices)
 *             self._adjacency_matrix = []             # <<<<<<<<<<<<<<
 *             for i in range(size):
 *                 self._adjacency_matrix.append([])
 */
    __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 74, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_3);
    __Pyx_GIVEREF(__pyx_t_3);
    __Pyx_GOTREF(__pyx_v_self->_adjacency_matrix);
    __Pyx_DECREF(__pyx_v_self->_adjacency_matrix);
    __pyx_v_self->_adjacency_matrix = ((PyObject*)__pyx_t_3);
    __pyx_t_3 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":75
 *             size = len(graph.vertices)
 *             self._adjacency_matrix = []
 *             for i in range(size):             # <<<<<<<<<<<<<<
 *                 self._adjacency_matrix.append([])
 *                 for _ in range(size):
 */
    __pyx_t_5 = __pyx_v_size;
    __pyx_t_6 = __pyx_t_5;
    for (__pyx_t_7 = 0; __pyx_t_7 < __pyx_t_6; __pyx_t_7+=1) {
      __pyx_v_i = __pyx_t_7;

      /* "cygraph/graph_/dynamic_graph.pyx":76
 *             self._adjacency_matrix = []
 *             for i in range(size):
 *                 self._adjacency_matrix.append([])             # <<<<<<<<<<<<<<
 *                 for _ in range(size):
 *                     self._adjacency_matrix[i].append(None)
 */
      if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
        PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%.30s'", "append");
        __PYX_ERR(0, 76, __pyx_L1_error)
      }
      __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 76, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_3);
      __pyx_t_8 = __Pyx_PyList_Append(__pyx_v_self->_adjacency_matrix, __pyx_t_3); if (unlikely(__pyx_t_8 == ((int)-1))) __PYX_ERR(0, 76, __pyx_L1_error)
      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":77
 *             for i in range(size):
 *                 self._adjacency_matrix.append([])
 *                 for _ in range(size):             # <<<<<<<<<<<<<<
 *                     self._adjacency_matrix[i].append(None)
 * 
 */
      __pyx_t_9 = __pyx_v_size;
      __pyx_t_10 = __pyx_t_9;
      for (__pyx_t_11 = 0; __pyx_t_11 < __pyx_t_10; __pyx_t_11+=1) {
        __pyx_v__ = __pyx_t_11;

        /* "cygraph/graph_/dynamic_graph.pyx":78
 *                 self._adjacency_matrix.append([])
 *                 for _ in range(size):
 *                     self._adjacency_matrix[i].append(None)             # <<<<<<<<<<<<<<
 * 
 *             for edge in graph.edges:
 */
        if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
          PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
          __PYX_ERR(0, 78, __pyx_L1_error)
        }
        __pyx_t_3 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_i, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 78, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_3);
        __pyx_t_8 = __Pyx_PyObject_Append(__pyx_t_3, Py_None); if (unlikely(__pyx_t_8 == ((int)-1))) __PYX_ERR(0, 78, __pyx_L1_error)
        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
      }
    }

    /* "cygraph/graph_/dynamic_graph.pyx":80
 *                     self._adjacency_matrix[i].append(None)
 * 
 *             for edge in graph.edges:             # <<<<<<<<<<<<<<
 *                 self.add_edge(*edge)
 * 
 */
    __pyx_t_3 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_graph), __pyx_n_s_edges); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 80, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_3);
    if (likely(PyList_CheckExact(__pyx_t_3)) || PyTuple_CheckExact(__pyx_t_3)) {
      __pyx_t_12 = __pyx_t_3; __Pyx_INCREF(__pyx_t_12); __pyx_t_4 = 0;
      __pyx_t_13 = NULL;
    } else {
      __pyx_t_4 = -1; __pyx_t_12 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 80, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_12);
      __pyx_t_13 = Py_TYPE(__pyx_t_12)->tp_iternext; if (unlikely(!__pyx_t_13)) __PYX_ERR(0, 80, __pyx_L1_error)
    }
    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
    for (;;) {
      if (likely(!__pyx_t_13)) {
        if (likely(PyList_CheckExact(__pyx_t_12))) {
          if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_12)) break;
          #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
          __pyx_t_3 = PyList_GET_ITEM(__pyx_t_12, __pyx_t_4); __Pyx_INCREF(__pyx_t_3); __pyx_t_4++; if (unlikely(0 < 0)) __PYX_ERR(0, 80, __pyx_L1_error)
          #else
          __pyx_t_3 = PySequence_ITEM(__pyx_t_12, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 80, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_3);
          #endif
        } else {
          if (__pyx_t_4 >= PyTuple_GET_SIZE(__pyx_t_12)) break;
          #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
          __pyx_t_3 = PyTuple_GET_ITEM(__pyx_t_12, __pyx_t_4); __Pyx_INCREF(__pyx_t_3); __pyx_t_4++; if (unlikely(0 < 0)) __PYX_ERR(0, 80, __pyx_L1_error)
          #else
          __pyx_t_3 = PySequence_ITEM(__pyx_t_12, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 80, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_3);
          #endif
        }
      } else {
        __pyx_t_3 = __pyx_t_13(__pyx_t_12);
        if (unlikely(!__pyx_t_3)) {
          PyObject* exc_type = PyErr_Occurred();
          if (exc_type) {
            if (likely(__Pyx_PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))) PyErr_Clear();
            else __PYX_ERR(0, 80, __pyx_L1_error)
          }
          break;
        }
        __Pyx_GOTREF(__pyx_t_3);
      }
      __Pyx_XDECREF_SET(__pyx_v_edge, __pyx_t_3);
      __pyx_t_3 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":81
 * 
 *             for edge in graph.edges:
 *                 self.add_edge(*edge)             # <<<<<<<<<<<<<<
 * 
 *         else:
 */
      __pyx_t_3 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_add_edge); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 81, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_3);
      __pyx_t_14 = __Pyx_PySequence_Tuple(__pyx_v_edge); if (unlikely(!__pyx_t_14)) __PYX_ERR(0, 81, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_14);
      __pyx_t_15 = __Pyx_PyObject_Call(__pyx_t_3, __pyx_t_14, NULL); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 81, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_15);
      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
      __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
      __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":80
 *                     self._adjacency_matrix[i].append(None)
 * 
 *             for edge in graph.edges:             # <<<<<<<<<<<<<<
 *                 self.add_edge(*edge)
 * 
 */
    }
    __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":71
 *         cdef list col
 * 
 *         if graph is not None:             # <<<<<<<<<<<<<<
 * 
 *             size = len(graph.vertices)
 */
    goto __pyx_L3;
  }

  /* "cygraph/graph_/dynamic_graph.pyx":84
 * 
 *         else:
 *             self._vertex_attributes = {}             # <<<<<<<<<<<<<<
 *             self._edge_attributes = {}
 * 
 */
  /*else*/ {
    __pyx_t_12 = __Pyx_PyDict_NewPresized(0); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 84, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_12);
    __Pyx_GIVEREF(__pyx_t_12);
    __Pyx_GOTREF(__pyx_v_self->__pyx_base._vertex_attributes);
    __Pyx_DECREF(__pyx_v_self->__pyx_base._vertex_attributes);
    __pyx_v_self->__pyx_base._vertex_attributes = ((PyObject*)__pyx_t_12);
    __pyx_t_12 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":85
 *         else:
 *             self._vertex_attributes = {}
 *             self._edge_attributes = {}             # <<<<<<<<<<<<<<
 * 
 *             self.directed = directed
 */
    __pyx_t_12 = __Pyx_PyDict_NewPresized(0); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 85, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_12);
    __Pyx_GIVEREF(__pyx_t_12);
    __Pyx_GOTREF(__pyx_v_self->__pyx_base._edge_attributes);
    __Pyx_DECREF(__pyx_v_self->__pyx_base._edge_attributes);
    __pyx_v_self->__pyx_base._edge_attributes = ((PyObject*)__pyx_t_12);
    __pyx_t_12 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":87
 *             self._edge_attributes = {}
 * 
 *             self.directed = directed             # <<<<<<<<<<<<<<
 *             self.vertices = list(vertices)
 * 
 */
    __pyx_v_self->__pyx_base.directed = __pyx_v_directed;

    /* "cygraph/graph_/dynamic_graph.pyx":88
 * 
 *             self.directed = directed
 *             self.vertices = list(vertices)             # <<<<<<<<<<<<<<
 * 
 *             # Initialize attribute dictionary for each vertex.
 */
    __pyx_t_12 = PySequence_List(__pyx_v_vertices); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 88, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_12);
    __Pyx_GIVEREF(__pyx_t_12);
    __Pyx_GOTREF(__pyx_v_self->__pyx_base.vertices);
    __Pyx_DECREF(__pyx_v_self->__pyx_base.vertices);
    __pyx_v_self->__pyx_base.vertices = ((PyObject*)__pyx_t_12);
    __pyx_t_12 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":91
 * 
 *             # Initialize attribute dictionary for each vertex.
 *             for v in self.vertices:             # <<<<<<<<<<<<<<
 *                 self._vertex_attributes[v] = {}
 * 
 */
    if (unlikely(__pyx_v_self->__pyx_base.vertices == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable");
      __PYX_ERR(0, 91, __pyx_L1_error)
    }
    __pyx_t_12 = __pyx_v_self->__pyx_base.vertices; __Pyx_INCREF(__pyx_t_12); __pyx_t_4 = 0;
    for (;;) {
      if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_12)) break;
      #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
      __pyx_t_15 = PyList_GET_ITEM(__pyx_t_12, __pyx_t_4); __Pyx_INCREF(__pyx_t_15); __pyx_t_4++; if (unlikely(0 < 0)) __PYX_ERR(0, 91, __pyx_L1_error)
      #else
      __pyx_t_15 = PySequence_ITEM(__pyx_t_12, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 91, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_15);
      #endif
      __Pyx_XDECREF_SET(__pyx_v_v, __pyx_t_15);
      __pyx_t_15 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":92
 *             # Initialize attribute dictionary for each vertex.
 *             for v in self.vertices:
 *                 self._vertex_attributes[v] = {}             # <<<<<<<<<<<<<<
 * 
 *             if adjacency_matrix:
 */
      __pyx_t_15 = __Pyx_PyDict_NewPresized(0); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 92, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_15);
      if (unlikely(__pyx_v_self->__pyx_base._vertex_attributes == Py_None)) {
        PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
        __PYX_ERR(0, 92, __pyx_L1_error)
      }
      if (unlikely(PyDict_SetItem(__pyx_v_self->__pyx_base._vertex_attributes, __pyx_v_v, __pyx_t_15) < 0)) __PYX_ERR(0, 92, __pyx_L1_error)
      __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":91
 * 
 *             # Initialize attribute dictionary for each vertex.
 *             for v in self.vertices:             # <<<<<<<<<<<<<<
 *                 self._vertex_attributes[v] = {}
 * 
 */
    }
    __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":94
 *                 self._vertex_attributes[v] = {}
 * 
 *             if adjacency_matrix:             # <<<<<<<<<<<<<<
 *                 # Check if it's a square matrix.
 *                 n_rows = len(adjacency_matrix)
 */
    __pyx_t_2 = (__pyx_v_adjacency_matrix != Py_None)&&(PyList_GET_SIZE(__pyx_v_adjacency_matrix) != 0);
    if (__pyx_t_2) {

      /* "cygraph/graph_/dynamic_graph.pyx":96
 *             if adjacency_matrix:
 *                 # Check if it's a square matrix.
 *                 n_rows = len(adjacency_matrix)             # <<<<<<<<<<<<<<
 *                 for r, row in enumerate(adjacency_matrix):
 *                     row_size = len(row)
 */
      if (unlikely(__pyx_v_adjacency_matrix == Py_None)) {
        PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
        __PYX_ERR(0, 96, __pyx_L1_error)
      }
      __pyx_t_4 = PyList_GET_SIZE(__pyx_v_adjacency_matrix); if (unlikely(__pyx_t_4 == ((Py_ssize_t)-1))) __PYX_ERR(0, 96, __pyx_L1_error)
      __pyx_v_n_rows = __pyx_t_4;

      /* "cygraph/graph_/dynamic_graph.pyx":97
 *                 # Check if it's a square matrix.
 *                 n_rows = len(adjacency_matrix)
 *                 for r, row in enumerate(adjacency_matrix):             # <<<<<<<<<<<<<<
 *                     row_size = len(row)
 *                     if row_size != len(adjacency_matrix):
 */
      __pyx_t_5 = 0;
      __pyx_t_12 = __pyx_v_adjacency_matrix; __Pyx_INCREF(__pyx_t_12); __pyx_t_4 = 0;
      for (;;) {
        if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_12)) break;
        #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
        __pyx_t_15 = PyList_GET_ITEM(__pyx_t_12, __pyx_t_4); __Pyx_INCREF(__pyx_t_15); __pyx_t_4++; if (unlikely(0 < 0)) __PYX_ERR(0, 97, __pyx_L1_error)
        #else
        __pyx_t_15 = PySequence_ITEM(__pyx_t_12, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 97, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_15);
        #endif
        __Pyx_XDECREF_SET(__pyx_v_row, __pyx_t_15);
        __pyx_t_15 = 0;
        __pyx_v_r = __pyx_t_5;
        __pyx_t_5 = (__pyx_t_5 + 1);

        /* "cygraph/graph_/dynamic_graph.pyx":98
 *                 n_rows = len(adjacency_matrix)
 *                 for r, row in enumerate(adjacency_matrix):
 *                     row_size = len(row)             # <<<<<<<<<<<<<<
 *                     if row_size != len(adjacency_matrix):
 *                         raise ValueError("Adjacency matrix must be a square. "
 */
        __pyx_t_16 = PyObject_Length(__pyx_v_row); if (unlikely(__pyx_t_16 == ((Py_ssize_t)-1))) __PYX_ERR(0, 98, __pyx_L1_error)
        __pyx_v_row_size = __pyx_t_16;

        /* "cygraph/graph_/dynamic_graph.pyx":99
 *                 for r, row in enumerate(adjacency_matrix):
 *                     row_size = len(row)
 *                     if row_size != len(adjacency_matrix):             # <<<<<<<<<<<<<<
 *                         raise ValueError("Adjacency matrix must be a square. "
 *                                         f"Row {r} is of length {row_size} and "
 */
        if (unlikely(__pyx_v_adjacency_matrix == Py_None)) {
          PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
          __PYX_ERR(0, 99, __pyx_L1_error)
        }
        __pyx_t_16 = PyList_GET_SIZE(__pyx_v_adjacency_matrix); if (unlikely(__pyx_t_16 == ((Py_ssize_t)-1))) __PYX_ERR(0, 99, __pyx_L1_error)
        __pyx_t_2 = ((__pyx_v_row_size != __pyx_t_16) != 0);
        if (unlikely(__pyx_t_2)) {

          /* "cygraph/graph_/dynamic_graph.pyx":100
 *                     row_size = len(row)
 *                     if row_size != len(adjacency_matrix):
 *                         raise ValueError("Adjacency matrix must be a square. "             # <<<<<<<<<<<<<<
 *                                         f"Row {r} is of length {row_size} and "
 *                                         f"the number of rows is {n_rows}.")
 */
          __pyx_t_15 = PyTuple_New(7); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 100, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_15);
          __pyx_t_16 = 0;
          __pyx_t_17 = 127;
          __Pyx_INCREF(__pyx_kp_u_Adjacency_matrix_must_be_a_squar);
          __pyx_t_16 += 39;
          __Pyx_GIVEREF(__pyx_kp_u_Adjacency_matrix_must_be_a_squar);
          PyTuple_SET_ITEM(__pyx_t_15, 0, __pyx_kp_u_Adjacency_matrix_must_be_a_squar);

          /* "cygraph/graph_/dynamic_graph.pyx":101
 *                     if row_size != len(adjacency_matrix):
 *                         raise ValueError("Adjacency matrix must be a square. "
 *                                         f"Row {r} is of length {row_size} and "             # <<<<<<<<<<<<<<
 *                                         f"the number of rows is {n_rows}.")
 *                 # Check if there are the right number of vertices.
 */
          __pyx_t_14 = __Pyx_PyUnicode_From_int(__pyx_v_r, 0, ' ', 'd'); if (unlikely(!__pyx_t_14)) __PYX_ERR(0, 101, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_14);
          __pyx_t_16 += __Pyx_PyUnicode_GET_LENGTH(__pyx_t_14);
          __Pyx_GIVEREF(__pyx_t_14);
          PyTuple_SET_ITEM(__pyx_t_15, 1, __pyx_t_14);
          __pyx_t_14 = 0;
          __Pyx_INCREF(__pyx_kp_u_is_of_length);
          __pyx_t_16 += 14;
          __Pyx_GIVEREF(__pyx_kp_u_is_of_length);
          PyTuple_SET_ITEM(__pyx_t_15, 2, __pyx_kp_u_is_of_length);
          __pyx_t_14 = __Pyx_PyUnicode_From_int(__pyx_v_row_size, 0, ' ', 'd'); if (unlikely(!__pyx_t_14)) __PYX_ERR(0, 101, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_14);
          __pyx_t_16 += __Pyx_PyUnicode_GET_LENGTH(__pyx_t_14);
          __Pyx_GIVEREF(__pyx_t_14);
          PyTuple_SET_ITEM(__pyx_t_15, 3, __pyx_t_14);
          __pyx_t_14 = 0;
          __Pyx_INCREF(__pyx_kp_u_and_the_number_of_rows_is);
          __pyx_t_16 += 27;
          __Pyx_GIVEREF(__pyx_kp_u_and_the_number_of_rows_is);
          PyTuple_SET_ITEM(__pyx_t_15, 4, __pyx_kp_u_and_the_number_of_rows_is);

          /* "cygraph/graph_/dynamic_graph.pyx":102
 *                         raise ValueError("Adjacency matrix must be a square. "
 *                                         f"Row {r} is of length {row_size} and "
 *                                         f"the number of rows is {n_rows}.")             # <<<<<<<<<<<<<<
 *                 # Check if there are the right number of vertices.
 *                 n_vertices = len(self.vertices)
 */
          __pyx_t_14 = __Pyx_PyUnicode_From_int(__pyx_v_n_rows, 0, ' ', 'd'); if (unlikely(!__pyx_t_14)) __PYX_ERR(0, 102, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_14);
          __pyx_t_16 += __Pyx_PyUnicode_GET_LENGTH(__pyx_t_14);
          __Pyx_GIVEREF(__pyx_t_14);
          PyTuple_SET_ITEM(__pyx_t_15, 5, __pyx_t_14);
          __pyx_t_14 = 0;
          __Pyx_INCREF(__pyx_kp_u__4);
          __pyx_t_16 += 1;
          __Pyx_GIVEREF(__pyx_kp_u__4);
          PyTuple_SET_ITEM(__pyx_t_15, 6, __pyx_kp_u__4);

          /* "cygraph/graph_/dynamic_graph.pyx":100
 *                     row_size = len(row)
 *                     if row_size != len(adjacency_matrix):
 *                         raise ValueError("Adjacency matrix must be a square. "             # <<<<<<<<<<<<<<
 *                                         f"Row {r} is of length {row_size} and "
 *                                         f"the number of rows is {n_rows}.")
 */
          __pyx_t_14 = __Pyx_PyUnicode_Join(__pyx_t_15, 7, __pyx_t_16, __pyx_t_17); if (unlikely(!__pyx_t_14)) __PYX_ERR(0, 100, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_14);
          __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
          __pyx_t_15 = __Pyx_PyObject_CallOneArg(__pyx_builtin_ValueError, __pyx_t_14); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 100, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_15);
          __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
          __Pyx_Raise(__pyx_t_15, 0, 0, 0);
          __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
          __PYX_ERR(0, 100, __pyx_L1_error)

          /* "cygraph/graph_/dynamic_graph.pyx":99
 *                 for r, row in enumerate(adjacency_matrix):
 *                     row_size = len(row)
 *                     if row_size != len(adjacency_matrix):             # <<<<<<<<<<<<<<
 *                         raise ValueError("Adjacency matrix must be a square. "
 *                                         f"Row {r} is of length {row_size} and "
 */
        }

        /* "cygraph/graph_/dynamic_graph.pyx":97
 *                 # Check if it's a square matrix.
 *                 n_rows = len(adjacency_matrix)
 *                 for r, row in enumerate(adjacency_matrix):             # <<<<<<<<<<<<<<
 *                     row_size = len(row)
 *                     if row_size != len(adjacency_matrix):
 */
      }
      __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":104
 *                                         f"the number of rows is {n_rows}.")
 *                 # Check if there are the right number of vertices.
 *                 n_vertices = len(self.vertices)             # <<<<<<<<<<<<<<
 *                 if n_vertices != n_rows:
 *                     raise ValueError("Different number of vertices as rows in"
 */
      __pyx_t_12 = __pyx_v_self->__pyx_base.vertices;
      __Pyx_INCREF(__pyx_t_12);
      if (unlikely(__pyx_t_12 == Py_None)) {
        PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
        __PYX_ERR(0, 104, __pyx_L1_error)
      }
      __pyx_t_4 = PyList_GET_SIZE(__pyx_t_12); if (unlikely(__pyx_t_4 == ((Py_ssize_t)-1))) __PYX_ERR(0, 104, __pyx_L1_error)
      __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
      __pyx_v_n_vertices = __pyx_t_4;

      /* "cygraph/graph_/dynamic_graph.pyx":105
 *                 # Check if there are the right number of vertices.
 *                 n_vertices = len(self.vertices)
 *                 if n_vertices != n_rows:             # <<<<<<<<<<<<<<
 *                     raise ValueError("Different number of vertices as rows in"
 *                                     f" adjacency matrix. {n_vertices} vertices"
 */
      __pyx_t_2 = ((__pyx_v_n_vertices != __pyx_v_n_rows) != 0);
      if (unlikely(__pyx_t_2)) {

        /* "cygraph/graph_/dynamic_graph.pyx":106
 *                 n_vertices = len(self.vertices)
 *                 if n_vertices != n_rows:
 *                     raise ValueError("Different number of vertices as rows in"             # <<<<<<<<<<<<<<
 *                                     f" adjacency matrix. {n_vertices} vertices"
 *                                     f" and {n_rows} rows.")
 */
        __pyx_t_12 = PyTuple_New(5); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 106, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_12);
        __pyx_t_4 = 0;
        __pyx_t_17 = 127;
        __Pyx_INCREF(__pyx_kp_u_Different_number_of_vertices_as);
        __pyx_t_4 += 58;
        __Pyx_GIVEREF(__pyx_kp_u_Different_number_of_vertices_as);
        PyTuple_SET_ITEM(__pyx_t_12, 0, __pyx_kp_u_Different_number_of_vertices_as);

        /* "cygraph/graph_/dynamic_graph.pyx":107
 *                 if n_vertices != n_rows:
 *                     raise ValueError("Different number of vertices as rows in"
 *                                     f" adjacency matrix. {n_vertices} vertices"             # <<<<<<<<<<<<<<
 *                                     f" and {n_rows} rows.")
 *                 # Check that there is no specified adjacency list.
 */
        __pyx_t_15 = __Pyx_PyUnicode_From_int(__pyx_v_n_vertices, 0, ' ', 'd'); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 107, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_15);
        __pyx_t_4 += __Pyx_PyUnicode_GET_LENGTH(__pyx_t_15);
        __Pyx_GIVEREF(__pyx_t_15);
        PyTuple_SET_ITEM(__pyx_t_12, 1, __pyx_t_15);
        __pyx_t_15 = 0;
        __Pyx_INCREF(__pyx_kp_u_vertices_and);
        __pyx_t_4 += 14;
        __Pyx_GIVEREF(__pyx_kp_u_vertices_and);
        PyTuple_SET_ITEM(__pyx_t_12, 2, __pyx_kp_u_vertices_and);

        /* "cygraph/graph_/dynamic_graph.pyx":108
 *                     raise ValueError("Different number of vertices as rows in"
 *                                     f" adjacency matrix. {n_vertices} vertices"
 *                                     f" and {n_rows} rows.")             # <<<<<<<<<<<<<<
 *                 # Check that there is no specified adjacency list.
 *                 if adjacency_list != []:
 */
        __pyx_t_15 = __Pyx_PyUnicode_From_int(__pyx_v_n_rows, 0, ' ', 'd'); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 108, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_15);
        __pyx_t_4 += __Pyx_PyUnicode_GET_LENGTH(__pyx_t_15);
        __Pyx_GIVEREF(__pyx_t_15);
        PyTuple_SET_ITEM(__pyx_t_12, 3, __pyx_t_15);
        __pyx_t_15 = 0;
        __Pyx_INCREF(__pyx_kp_u_rows);
        __pyx_t_4 += 6;
        __Pyx_GIVEREF(__pyx_kp_u_rows);
        PyTuple_SET_ITEM(__pyx_t_12, 4, __pyx_kp_u_rows);

        /* "cygraph/graph_/dynamic_graph.pyx":106
 *                 n_vertices = len(self.vertices)
 *                 if n_vertices != n_rows:
 *                     raise ValueError("Different number of vertices as rows in"             # <<<<<<<<<<<<<<
 *                                     f" adjacency matrix. {n_vertices} vertices"
 *                                     f" and {n_rows} rows.")
 */
        __pyx_t_15 = __Pyx_PyUnicode_Join(__pyx_t_12, 5, __pyx_t_4, __pyx_t_17); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 106, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_15);
        __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
        __pyx_t_12 = __Pyx_PyObject_CallOneArg(__pyx_builtin_ValueError, __pyx_t_15); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 106, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_12);
        __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
        __Pyx_Raise(__pyx_t_12, 0, 0, 0);
        __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
        __PYX_ERR(0, 106, __pyx_L1_error)

        /* "cygraph/graph_/dynamic_graph.pyx":105
 *                 # Check if there are the right number of vertices.
 *                 n_vertices = len(self.vertices)
 *                 if n_vertices != n_rows:             # <<<<<<<<<<<<<<
 *                     raise ValueError("Different number of vertices as rows in"
 *                                     f" adjacency matrix. {n_vertices} vertices"
 */
      }

      /* "cygraph/graph_/dynamic_graph.pyx":110
 *                                     f" and {n_rows} rows.")
 *                 # Check that there is no specified adjacency list.
 *                 if adjacency_list != []:             # <<<<<<<<<<<<<<
 *                     raise ValueError("both adjacency list and adjacency matrix "
 *                                      "specified.")
 */
      __pyx_t_12 = PyList_New(0); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 110, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_12);
      __pyx_t_15 = PyObject_RichCompare(__pyx_v_adjacency_list, __pyx_t_12, Py_NE); __Pyx_XGOTREF(__pyx_t_15); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 110, __pyx_L1_error)
      __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
      __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_15); if (unlikely(__pyx_t_2 < 0)) __PYX_ERR(0, 110, __pyx_L1_error)
      __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
      if (unlikely(__pyx_t_2)) {

        /* "cygraph/graph_/dynamic_graph.pyx":111
 *                 # Check that there is no specified adjacency list.
 *                 if adjacency_list != []:
 *                     raise ValueError("both adjacency list and adjacency matrix "             # <<<<<<<<<<<<<<
 *                                      "specified.")
 * 
 */
        __pyx_t_15 = __Pyx_PyObject_Call(__pyx_builtin_ValueError, __pyx_tuple__5, NULL); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 111, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_15);
        __Pyx_Raise(__pyx_t_15, 0, 0, 0);
        __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
        __PYX_ERR(0, 111, __pyx_L1_error)

        /* "cygraph/graph_/dynamic_graph.pyx":110
 *                                     f" and {n_rows} rows.")
 *                 # Check that there is no specified adjacency list.
 *                 if adjacency_list != []:             # <<<<<<<<<<<<<<
 *                     raise ValueError("both adjacency list and adjacency matrix "
 *                                      "specified.")
 */
      }

      /* "cygraph/graph_/dynamic_graph.pyx":114
 *                                      "specified.")
 * 
 *                 self._adjacency_matrix = adjacency_matrix             # <<<<<<<<<<<<<<
 *             else:
 *                 # Create empty adjacency matrix.
 */
      __Pyx_INCREF(__pyx_v_adjacency_matrix);
      __Pyx_GIVEREF(__pyx_v_adjacency_matrix);
      __Pyx_GOTREF(__pyx_v_self->_adjacency_matrix);
      __Pyx_DECREF(__pyx_v_self->_adjacency_matrix);
      __pyx_v_self->_adjacency_matrix = __pyx_v_adjacency_matrix;

      /* "cygraph/graph_/dynamic_graph.pyx":94
 *                 self._vertex_attributes[v] = {}
 * 
 *             if adjacency_matrix:             # <<<<<<<<<<<<<<
 *                 # Check if it's a square matrix.
 *                 n_rows = len(adjacency_matrix)
 */
      goto __pyx_L12;
    }

    /* "cygraph/graph_/dynamic_graph.pyx":117
 *             else:
 *                 # Create empty adjacency matrix.
 *                 size = len(self.vertices)             # <<<<<<<<<<<<<<
 *                 self._adjacency_matrix = []
 *                 for i in range(size):
 */
    /*else*/ {
      __pyx_t_15 = __pyx_v_self->__pyx_base.vertices;
      __Pyx_INCREF(__pyx_t_15);
      if (unlikely(__pyx_t_15 == Py_None)) {
        PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
        __PYX_ERR(0, 117, __pyx_L1_error)
      }
      __pyx_t_4 = PyList_GET_SIZE(__pyx_t_15); if (unlikely(__pyx_t_4 == ((Py_ssize_t)-1))) __PYX_ERR(0, 117, __pyx_L1_error)
      __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
      __pyx_v_size = __pyx_t_4;

      /* "cygraph/graph_/dynamic_graph.pyx":118
 *                 # Create empty adjacency matrix.
 *                 size = len(self.vertices)
 *                 self._adjacency_matrix = []             # <<<<<<<<<<<<<<
 *                 for i in range(size):
 *                     self._adjacency_matrix.append([])
 */
      __pyx_t_15 = PyList_New(0); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 118, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_15);
      __Pyx_GIVEREF(__pyx_t_15);
      __Pyx_GOTREF(__pyx_v_self->_adjacency_matrix);
      __Pyx_DECREF(__pyx_v_self->_adjacency_matrix);
      __pyx_v_self->_adjacency_matrix = ((PyObject*)__pyx_t_15);
      __pyx_t_15 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":119
 *                 size = len(self.vertices)
 *                 self._adjacency_matrix = []
 *                 for i in range(size):             # <<<<<<<<<<<<<<
 *                     self._adjacency_matrix.append([])
 *                     for _ in range(size):
 */
      __pyx_t_5 = __pyx_v_size;
      __pyx_t_6 = __pyx_t_5;
      for (__pyx_t_7 = 0; __pyx_t_7 < __pyx_t_6; __pyx_t_7+=1) {
        __pyx_v_i = __pyx_t_7;

        /* "cygraph/graph_/dynamic_graph.pyx":120
 *                 self._adjacency_matrix = []
 *                 for i in range(size):
 *                     self._adjacency_matrix.append([])             # <<<<<<<<<<<<<<
 *                     for _ in range(size):
 *                         self._adjacency_matrix[i].append(None)
 */
        if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
          PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%.30s'", "append");
          __PYX_ERR(0, 120, __pyx_L1_error)
        }
        __pyx_t_15 = PyList_New(0); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 120, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_15);
        __pyx_t_8 = __Pyx_PyList_Append(__pyx_v_self->_adjacency_matrix, __pyx_t_15); if (unlikely(__pyx_t_8 == ((int)-1))) __PYX_ERR(0, 120, __pyx_L1_error)
        __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;

        /* "cygraph/graph_/dynamic_graph.pyx":121
 *                 for i in range(size):
 *                     self._adjacency_matrix.append([])
 *                     for _ in range(size):             # <<<<<<<<<<<<<<
 *                         self._adjacency_matrix[i].append(None)
 * 
 */
        __pyx_t_9 = __pyx_v_size;
        __pyx_t_10 = __pyx_t_9;
        for (__pyx_t_11 = 0; __pyx_t_11 < __pyx_t_10; __pyx_t_11+=1) {
          __pyx_v__ = __pyx_t_11;

          /* "cygraph/graph_/dynamic_graph.pyx":122
 *                     self._adjacency_matrix.append([])
 *                     for _ in range(size):
 *                         self._adjacency_matrix[i].append(None)             # <<<<<<<<<<<<<<
 * 
 *                 if adjacency_list:
 */
          if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
            PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
            __PYX_ERR(0, 122, __pyx_L1_error)
          }
          __pyx_t_15 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_i, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 122, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_15);
          __pyx_t_8 = __Pyx_PyObject_Append(__pyx_t_15, Py_None); if (unlikely(__pyx_t_8 == ((int)-1))) __PYX_ERR(0, 122, __pyx_L1_error)
          __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
        }
      }

      /* "cygraph/graph_/dynamic_graph.pyx":124
 *                         self._adjacency_matrix[i].append(None)
 * 
 *                 if adjacency_list:             # <<<<<<<<<<<<<<
 *                     # Check that there is the right number of vertices.
 *                     n_vertices = len(vertices)
 */
      __pyx_t_2 = (__pyx_v_adjacency_list != Py_None)&&(PyList_GET_SIZE(__pyx_v_adjacency_list) != 0);
      if (__pyx_t_2) {

        /* "cygraph/graph_/dynamic_graph.pyx":126
 *                 if adjacency_list:
 *                     # Check that there is the right number of vertices.
 *                     n_vertices = len(vertices)             # <<<<<<<<<<<<<<
 *                     n_adj_list_vertices = len(adjacency_list)
 *                     if n_vertices != n_adj_list_vertices:
 */
        if (unlikely(__pyx_v_vertices == Py_None)) {
          PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
          __PYX_ERR(0, 126, __pyx_L1_error)
        }
        __pyx_t_4 = PyList_GET_SIZE(__pyx_v_vertices); if (unlikely(__pyx_t_4 == ((Py_ssize_t)-1))) __PYX_ERR(0, 126, __pyx_L1_error)
        __pyx_v_n_vertices = __pyx_t_4;

        /* "cygraph/graph_/dynamic_graph.pyx":127
 *                     # Check that there is the right number of vertices.
 *                     n_vertices = len(vertices)
 *                     n_adj_list_vertices = len(adjacency_list)             # <<<<<<<<<<<<<<
 *                     if n_vertices != n_adj_list_vertices:
 *                         raise ValueError("Different number of vertices in "
 */
        if (unlikely(__pyx_v_adjacency_list == Py_None)) {
          PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
          __PYX_ERR(0, 127, __pyx_L1_error)
        }
        __pyx_t_4 = PyList_GET_SIZE(__pyx_v_adjacency_list); if (unlikely(__pyx_t_4 == ((Py_ssize_t)-1))) __PYX_ERR(0, 127, __pyx_L1_error)
        __pyx_v_n_adj_list_vertices = __pyx_t_4;

        /* "cygraph/graph_/dynamic_graph.pyx":128
 *                     n_vertices = len(vertices)
 *                     n_adj_list_vertices = len(adjacency_list)
 *                     if n_vertices != n_adj_list_vertices:             # <<<<<<<<<<<<<<
 *                         raise ValueError("Different number of vertices in "
 *                                         "`vertices` than in `adjacency_list`."
 */
        __pyx_t_2 = ((__pyx_v_n_vertices != __pyx_v_n_adj_list_vertices) != 0);
        if (unlikely(__pyx_t_2)) {

          /* "cygraph/graph_/dynamic_graph.pyx":129
 *                     n_adj_list_vertices = len(adjacency_list)
 *                     if n_vertices != n_adj_list_vertices:
 *                         raise ValueError("Different number of vertices in "             # <<<<<<<<<<<<<<
 *                                         "`vertices` than in `adjacency_list`."
 *                                         f"{n_vertices} in `vertices` and "
 */
          __pyx_t_15 = PyTuple_New(5); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 129, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_15);
          __pyx_t_4 = 0;
          __pyx_t_17 = 127;
          __Pyx_INCREF(__pyx_kp_u_Different_number_of_vertices_in);
          __pyx_t_4 += 68;
          __Pyx_GIVEREF(__pyx_kp_u_Different_number_of_vertices_in);
          PyTuple_SET_ITEM(__pyx_t_15, 0, __pyx_kp_u_Different_number_of_vertices_in);

          /* "cygraph/graph_/dynamic_graph.pyx":131
 *                         raise ValueError("Different number of vertices in "
 *                                         "`vertices` than in `adjacency_list`."
 *                                         f"{n_vertices} in `vertices` and "             # <<<<<<<<<<<<<<
 *                                         f"{n_adj_list_vertices} in "
 *                                         "`adjacency_list`")
 */
          __pyx_t_12 = __Pyx_PyUnicode_From_int(__pyx_v_n_vertices, 0, ' ', 'd'); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 131, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_12);
          __pyx_t_4 += __Pyx_PyUnicode_GET_LENGTH(__pyx_t_12);
          __Pyx_GIVEREF(__pyx_t_12);
          PyTuple_SET_ITEM(__pyx_t_15, 1, __pyx_t_12);
          __pyx_t_12 = 0;
          __Pyx_INCREF(__pyx_kp_u_in_vertices_and);
          __pyx_t_4 += 19;
          __Pyx_GIVEREF(__pyx_kp_u_in_vertices_and);
          PyTuple_SET_ITEM(__pyx_t_15, 2, __pyx_kp_u_in_vertices_and);

          /* "cygraph/graph_/dynamic_graph.pyx":132
 *                                         "`vertices` than in `adjacency_list`."
 *                                         f"{n_vertices} in `vertices` and "
 *                                         f"{n_adj_list_vertices} in "             # <<<<<<<<<<<<<<
 *                                         "`adjacency_list`")
 *                     # Fill in the adjacency matrix.
 */
          __pyx_t_12 = __Pyx_PyUnicode_From_int(__pyx_v_n_adj_list_vertices, 0, ' ', 'd'); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 132, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_12);
          __pyx_t_4 += __Pyx_PyUnicode_GET_LENGTH(__pyx_t_12);
          __Pyx_GIVEREF(__pyx_t_12);
          PyTuple_SET_ITEM(__pyx_t_15, 3, __pyx_t_12);
          __pyx_t_12 = 0;
          __Pyx_INCREF(__pyx_kp_u_in_adjacency_list);
          __pyx_t_4 += 20;
          __Pyx_GIVEREF(__pyx_kp_u_in_adjacency_list);
          PyTuple_SET_ITEM(__pyx_t_15, 4, __pyx_kp_u_in_adjacency_list);

          /* "cygraph/graph_/dynamic_graph.pyx":129
 *                     n_adj_list_vertices = len(adjacency_list)
 *                     if n_vertices != n_adj_list_vertices:
 *                         raise ValueError("Different number of vertices in "             # <<<<<<<<<<<<<<
 *                                         "`vertices` than in `adjacency_list`."
 *                                         f"{n_vertices} in `vertices` and "
 */
          __pyx_t_12 = __Pyx_PyUnicode_Join(__pyx_t_15, 5, __pyx_t_4, __pyx_t_17); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 129, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_12);
          __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
          __pyx_t_15 = __Pyx_PyObject_CallOneArg(__pyx_builtin_ValueError, __pyx_t_12); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 129, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_15);
          __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
          __Pyx_Raise(__pyx_t_15, 0, 0, 0);
          __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
          __PYX_ERR(0, 129, __pyx_L1_error)

          /* "cygraph/graph_/dynamic_graph.pyx":128
 *                     n_vertices = len(vertices)
 *                     n_adj_list_vertices = len(adjacency_list)
 *                     if n_vertices != n_adj_list_vertices:             # <<<<<<<<<<<<<<
 *                         raise ValueError("Different number of vertices in "
 *                                         "`vertices` than in `adjacency_list`."
 */
        }

        /* "cygraph/graph_/dynamic_graph.pyx":135
 *                                         "`adjacency_list`")
 *                     # Fill in the adjacency matrix.
 *                     for vertex in range(n_vertices):             # <<<<<<<<<<<<<<
 *                         for vertex_ in range(n_vertices):
 *                             if vertex_ in adjacency_list[vertex]:
 */
        __pyx_t_5 = __pyx_v_n_vertices;
        __pyx_t_6 = __pyx_t_5;
        for (__pyx_t_7 = 0; __pyx_t_7 < __pyx_t_6; __pyx_t_7+=1) {
          __pyx_v_vertex = __pyx_t_7;

          /* "cygraph/graph_/dynamic_graph.pyx":136
 *                     # Fill in the adjacency matrix.
 *                     for vertex in range(n_vertices):
 *                         for vertex_ in range(n_vertices):             # <<<<<<<<<<<<<<
 *                             if vertex_ in adjacency_list[vertex]:
 *                                 self._adjacency_matrix[vertex][vertex_] = 1.0
 */
          __pyx_t_9 = __pyx_v_n_vertices;
          __pyx_t_10 = __pyx_t_9;
          for (__pyx_t_11 = 0; __pyx_t_11 < __pyx_t_10; __pyx_t_11+=1) {
            __pyx_v_vertex_ = __pyx_t_11;

            /* "cygraph/graph_/dynamic_graph.pyx":137
 *                     for vertex in range(n_vertices):
 *                         for vertex_ in range(n_vertices):
 *                             if vertex_ in adjacency_list[vertex]:             # <<<<<<<<<<<<<<
 *                                 self._adjacency_matrix[vertex][vertex_] = 1.0
 * 
 */
            __pyx_t_15 = __Pyx_PyInt_From_int(__pyx_v_vertex_); if (unlikely(!__pyx_t_15)) __PYX_ERR(0, 137, __pyx_L1_error)
            __Pyx_GOTREF(__pyx_t_15);
            if (unlikely(__pyx_v_adjacency_list == Py_None)) {
              PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
              __PYX_ERR(0, 137, __pyx_L1_error)
            }
            __pyx_t_12 = __Pyx_GetItemInt_List(__pyx_v_adjacency_list, __pyx_v_vertex, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 137, __pyx_L1_error)
            __Pyx_GOTREF(__pyx_t_12);
            __pyx_t_2 = (__Pyx_PySequence_ContainsTF(__pyx_t_15, __pyx_t_12, Py_EQ)); if (unlikely(__pyx_t_2 < 0)) __PYX_ERR(0, 137, __pyx_L1_error)
            __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
            __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
            __pyx_t_1 = (__pyx_t_2 != 0);
            if (__pyx_t_1) {

              /* "cygraph/graph_/dynamic_graph.pyx":138
 *                         for vertex_ in range(n_vertices):
 *                             if vertex_ in adjacency_list[vertex]:
 *                                 self._adjacency_matrix[vertex][vertex_] = 1.0             # <<<<<<<<<<<<<<
 * 
 *     def __copy__(self):
 */
              if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
                PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
                __PYX_ERR(0, 138, __pyx_L1_error)
              }
              __pyx_t_12 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_vertex, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 138, __pyx_L1_error)
              __Pyx_GOTREF(__pyx_t_12);
              if (unlikely(__Pyx_SetItemInt(__pyx_t_12, __pyx_v_vertex_, __pyx_float_1_0, int, 1, __Pyx_PyInt_From_int, 0, 1, 1) < 0)) __PYX_ERR(0, 138, __pyx_L1_error)
              __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;

              /* "cygraph/graph_/dynamic_graph.pyx":137
 *                     for vertex in range(n_vertices):
 *                         for vertex_ in range(n_vertices):
 *                             if vertex_ in adjacency_list[vertex]:             # <<<<<<<<<<<<<<
 *                                 self._adjacency_matrix[vertex][vertex_] = 1.0
 * 
 */
            }
          }
        }

        /* "cygraph/graph_/dynamic_graph.pyx":124
 *                         self._adjacency_matrix[i].append(None)
 * 
 *                 if adjacency_list:             # <<<<<<<<<<<<<<
 *                     # Check that there is the right number of vertices.
 *                     n_vertices = len(vertices)
 */
      }
    }
    __pyx_L12:;
  }
  __pyx_L3:;

  /* "cygraph/graph_/dynamic_graph.pyx":62
 *     """
 * 
 *     def __cinit__(self, Graph graph=None, bint directed=False, list vertices=[],             # <<<<<<<<<<<<<<
 *             list adjacency_matrix=[], list adjacency_list=[]):
 * 
 */

  /* function exit code */
  __pyx_r = 0;
  goto __pyx_L0;
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_3);
  __Pyx_XDECREF(__pyx_t_12);
  __Pyx_XDECREF(__pyx_t_14);
  __Pyx_XDECREF(__pyx_t_15);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.__cinit__", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = -1;
  __pyx_L0:;
  __Pyx_XDECREF(__pyx_v_v);
  __Pyx_XDECREF(__pyx_v_edge);
  __Pyx_XDECREF(__pyx_v_row);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":140
 *                                 self._adjacency_matrix[vertex][vertex_] = 1.0
 * 
 *     def __copy__(self):             # <<<<<<<<<<<<<<
 *         cdef DynamicGraph new_graph = \
 *             DynamicGraph(directed=self.directed, vertices=self.vertices)
 */

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_3__copy__(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused); /*proto*/
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_3__copy__(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused) {
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("__copy__ (wrapper)", 0);
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_2__copy__(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self));

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_2__copy__(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self) {
  struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_new_graph = 0;
  PyObject *__pyx_v_edge = 0;
  PyObject *__pyx_v_key = 0;
  PyObject *__pyx_v_vertex = 0;
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  PyObject *__pyx_t_2 = NULL;
  Py_ssize_t __pyx_t_3;
  PyObject *(*__pyx_t_4)(PyObject *);
  PyObject *__pyx_t_5 = NULL;
  Py_ssize_t __pyx_t_6;
  PyObject *(*__pyx_t_7)(PyObject *);
  PyObject *__pyx_t_8 = NULL;
  PyObject *__pyx_t_9 = NULL;
  PyObject *__pyx_t_10 = NULL;
  int __pyx_t_11;
  PyObject *__pyx_t_12 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("__copy__", 0);

  /* "cygraph/graph_/dynamic_graph.pyx":142
 *     def __copy__(self):
 *         cdef DynamicGraph new_graph = \
 *             DynamicGraph(directed=self.directed, vertices=self.vertices)             # <<<<<<<<<<<<<<
 * 
 *         # Add edges and edge attributes.
 */
  __pyx_t_1 = __Pyx_PyDict_NewPresized(2); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 142, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_t_2 = __Pyx_PyBool_FromLong(__pyx_v_self->__pyx_base.directed); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 142, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  if (PyDict_SetItem(__pyx_t_1, __pyx_n_s_directed, __pyx_t_2) < 0) __PYX_ERR(0, 142, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
  if (PyDict_SetItem(__pyx_t_1, __pyx_n_s_vertices, __pyx_v_self->__pyx_base.vertices) < 0) __PYX_ERR(0, 142, __pyx_L1_error)
  __pyx_t_2 = __Pyx_PyObject_Call(((PyObject *)__pyx_ptype_7cygraph_6graph__13dynamic_graph_DynamicGraph), __pyx_empty_tuple, __pyx_t_1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 142, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __pyx_v_new_graph = ((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_t_2);
  __pyx_t_2 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":147
 *         cdef tuple edge
 *         cdef object key
 *         for edge in self.edges:             # <<<<<<<<<<<<<<
 *             new_graph.add_edge(*edge)
 *             for key in self._edge_attributes[edge]:
 */
  __pyx_t_2 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_edges); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 147, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  if (likely(PyList_CheckExact(__pyx_t_2)) || PyTuple_CheckExact(__pyx_t_2)) {
    __pyx_t_1 = __pyx_t_2; __Pyx_INCREF(__pyx_t_1); __pyx_t_3 = 0;
    __pyx_t_4 = NULL;
  } else {
    __pyx_t_3 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 147, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    __pyx_t_4 = Py_TYPE(__pyx_t_1)->tp_iternext; if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 147, __pyx_L1_error)
  }
  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
  for (;;) {
    if (likely(!__pyx_t_4)) {
      if (likely(PyList_CheckExact(__pyx_t_1))) {
        if (__pyx_t_3 >= PyList_GET_SIZE(__pyx_t_1)) break;
        #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
        __pyx_t_2 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_3); __Pyx_INCREF(__pyx_t_2); __pyx_t_3++; if (unlikely(0 < 0)) __PYX_ERR(0, 147, __pyx_L1_error)
        #else
        __pyx_t_2 = PySequence_ITEM(__pyx_t_1, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 147, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_2);
        #endif
      } else {
        if (__pyx_t_3 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
        #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
        __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_3); __Pyx_INCREF(__pyx_t_2); __pyx_t_3++; if (unlikely(0 < 0)) __PYX_ERR(0, 147, __pyx_L1_error)
        #else
        __pyx_t_2 = PySequence_ITEM(__pyx_t_1, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 147, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_2);
        #endif
      }
    } else {
      __pyx_t_2 = __pyx_t_4(__pyx_t_1);
      if (unlikely(!__pyx_t_2)) {
        PyObject* exc_type = PyErr_Occurred();
        if (exc_type) {
          if (likely(__Pyx_PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))) PyErr_Clear();
          else __PYX_ERR(0, 147, __pyx_L1_error)
        }
        break;
      }
      __Pyx_GOTREF(__pyx_t_2);
    }
    if (!(likely(PyTuple_CheckExact(__pyx_t_2))||((__pyx_t_2) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "tuple", Py_TYPE(__pyx_t_2)->tp_name), 0))) __PYX_ERR(0, 147, __pyx_L1_error)
    __Pyx_XDECREF_SET(__pyx_v_edge, ((PyObject*)__pyx_t_2));
    __pyx_t_2 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":148
 *         cdef object key
 *         for edge in self.edges:
 *             new_graph.add_edge(*edge)             # <<<<<<<<<<<<<<
 *             for key in self._edge_attributes[edge]:
 *                 new_graph.set_edge_attribute(
 */
    __pyx_t_2 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_new_graph), __pyx_n_s_add_edge); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 148, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    if (unlikely(__pyx_v_edge == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable");
      __PYX_ERR(0, 148, __pyx_L1_error)
    }
    __pyx_t_5 = __Pyx_PyObject_Call(__pyx_t_2, __pyx_v_edge, NULL); if (unlikely(!__pyx_t_5)) __PYX_ERR(0, 148, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_5);
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
    __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":149
 *         for edge in self.edges:
 *             new_graph.add_edge(*edge)
 *             for key in self._edge_attributes[edge]:             # <<<<<<<<<<<<<<
 *                 new_graph.set_edge_attribute(
 *                     edge, key, self._edge_attributes[edge][key])
 */
    if (unlikely(__pyx_v_self->__pyx_base._edge_attributes == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
      __PYX_ERR(0, 149, __pyx_L1_error)
    }
    __pyx_t_5 = __Pyx_PyDict_GetItem(__pyx_v_self->__pyx_base._edge_attributes, __pyx_v_edge); if (unlikely(!__pyx_t_5)) __PYX_ERR(0, 149, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_5);
    if (likely(PyList_CheckExact(__pyx_t_5)) || PyTuple_CheckExact(__pyx_t_5)) {
      __pyx_t_2 = __pyx_t_5; __Pyx_INCREF(__pyx_t_2); __pyx_t_6 = 0;
      __pyx_t_7 = NULL;
    } else {
      __pyx_t_6 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_5); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 149, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_2);
      __pyx_t_7 = Py_TYPE(__pyx_t_2)->tp_iternext; if (unlikely(!__pyx_t_7)) __PYX_ERR(0, 149, __pyx_L1_error)
    }
    __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
    for (;;) {
      if (likely(!__pyx_t_7)) {
        if (likely(PyList_CheckExact(__pyx_t_2))) {
          if (__pyx_t_6 >= PyList_GET_SIZE(__pyx_t_2)) break;
          #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
          __pyx_t_5 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_6); __Pyx_INCREF(__pyx_t_5); __pyx_t_6++; if (unlikely(0 < 0)) __PYX_ERR(0, 149, __pyx_L1_error)
          #else
          __pyx_t_5 = PySequence_ITEM(__pyx_t_2, __pyx_t_6); __pyx_t_6++; if (unlikely(!__pyx_t_5)) __PYX_ERR(0, 149, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_5);
          #endif
        } else {
          if (__pyx_t_6 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
          #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
          __pyx_t_5 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_6); __Pyx_INCREF(__pyx_t_5); __pyx_t_6++; if (unlikely(0 < 0)) __PYX_ERR(0, 149, __pyx_L1_error)
          #else
          __pyx_t_5 = PySequence_ITEM(__pyx_t_2, __pyx_t_6); __pyx_t_6++; if (unlikely(!__pyx_t_5)) __PYX_ERR(0, 149, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_5);
          #endif
        }
      } else {
        __pyx_t_5 = __pyx_t_7(__pyx_t_2);
        if (unlikely(!__pyx_t_5)) {
          PyObject* exc_type = PyErr_Occurred();
          if (exc_type) {
            if (likely(__Pyx_PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))) PyErr_Clear();
            else __PYX_ERR(0, 149, __pyx_L1_error)
          }
          break;
        }
        __Pyx_GOTREF(__pyx_t_5);
      }
      __Pyx_XDECREF_SET(__pyx_v_key, __pyx_t_5);
      __pyx_t_5 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":151
 *             for key in self._edge_attributes[edge]:
 *                 new_graph.set_edge_attribute(
 *                     edge, key, self._edge_attributes[edge][key])             # <<<<<<<<<<<<<<
 * 
 *         # Add vertex attributes.
 */
      if (unlikely(__pyx_v_self->__pyx_base._edge_attributes == Py_None)) {
        PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
        __PYX_ERR(0, 151, __pyx_L1_error)
      }
      __pyx_t_5 = __Pyx_PyDict_GetItem(__pyx_v_self->__pyx_base._edge_attributes, __pyx_v_edge); if (unlikely(!__pyx_t_5)) __PYX_ERR(0, 151, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_5);
      __pyx_t_8 = __Pyx_PyObject_GetItem(__pyx_t_5, __pyx_v_key); if (unlikely(!__pyx_t_8)) __PYX_ERR(0, 151, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_8);
      __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":150
 *             new_graph.add_edge(*edge)
 *             for key in self._edge_attributes[edge]:
 *                 new_graph.set_edge_attribute(             # <<<<<<<<<<<<<<
 *                     edge, key, self._edge_attributes[edge][key])
 * 
 */
      ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_new_graph->__pyx_base.__pyx_vtab)->__pyx_base.set_edge_attribute(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_new_graph), __pyx_v_edge, __pyx_v_key, __pyx_t_8, 0); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 150, __pyx_L1_error)
      __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":149
 *         for edge in self.edges:
 *             new_graph.add_edge(*edge)
 *             for key in self._edge_attributes[edge]:             # <<<<<<<<<<<<<<
 *                 new_graph.set_edge_attribute(
 *                     edge, key, self._edge_attributes[edge][key])
 */
    }
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":147
 *         cdef tuple edge
 *         cdef object key
 *         for edge in self.edges:             # <<<<<<<<<<<<<<
 *             new_graph.add_edge(*edge)
 *             for key in self._edge_attributes[edge]:
 */
  }
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":155
 *         # Add vertex attributes.
 *         cdef object vertex
 *         for vertex in self.vertices:             # <<<<<<<<<<<<<<
 *             for key in self._vertex_attributes[vertex]:
 *                 new_graph.set_vertex_attribtue(
 */
  if (unlikely(__pyx_v_self->__pyx_base.vertices == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable");
    __PYX_ERR(0, 155, __pyx_L1_error)
  }
  __pyx_t_1 = __pyx_v_self->__pyx_base.vertices; __Pyx_INCREF(__pyx_t_1); __pyx_t_3 = 0;
  for (;;) {
    if (__pyx_t_3 >= PyList_GET_SIZE(__pyx_t_1)) break;
    #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
    __pyx_t_2 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_3); __Pyx_INCREF(__pyx_t_2); __pyx_t_3++; if (unlikely(0 < 0)) __PYX_ERR(0, 155, __pyx_L1_error)
    #else
    __pyx_t_2 = PySequence_ITEM(__pyx_t_1, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 155, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    #endif
    __Pyx_XDECREF_SET(__pyx_v_vertex, __pyx_t_2);
    __pyx_t_2 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":156
 *         cdef object vertex
 *         for vertex in self.vertices:
 *             for key in self._vertex_attributes[vertex]:             # <<<<<<<<<<<<<<
 *                 new_graph.set_vertex_attribtue(
 *                     vertex, key, self._vertex_attributes[vertex][key])
 */
    if (unlikely(__pyx_v_self->__pyx_base._vertex_attributes == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
      __PYX_ERR(0, 156, __pyx_L1_error)
    }
    __pyx_t_2 = __Pyx_PyDict_GetItem(__pyx_v_self->__pyx_base._vertex_attributes, __pyx_v_vertex); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 156, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    if (likely(PyList_CheckExact(__pyx_t_2)) || PyTuple_CheckExact(__pyx_t_2)) {
      __pyx_t_8 = __pyx_t_2; __Pyx_INCREF(__pyx_t_8); __pyx_t_6 = 0;
      __pyx_t_4 = NULL;
    } else {
      __pyx_t_6 = -1; __pyx_t_8 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_8)) __PYX_ERR(0, 156, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_8);
      __pyx_t_4 = Py_TYPE(__pyx_t_8)->tp_iternext; if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 156, __pyx_L1_error)
    }
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
    for (;;) {
      if (likely(!__pyx_t_4)) {
        if (likely(PyList_CheckExact(__pyx_t_8))) {
          if (__pyx_t_6 >= PyList_GET_SIZE(__pyx_t_8)) break;
          #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
          __pyx_t_2 = PyList_GET_ITEM(__pyx_t_8, __pyx_t_6); __Pyx_INCREF(__pyx_t_2); __pyx_t_6++; if (unlikely(0 < 0)) __PYX_ERR(0, 156, __pyx_L1_error)
          #else
          __pyx_t_2 = PySequence_ITEM(__pyx_t_8, __pyx_t_6); __pyx_t_6++; if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 156, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_2);
          #endif
        } else {
          if (__pyx_t_6 >= PyTuple_GET_SIZE(__pyx_t_8)) break;
          #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
          __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_8, __pyx_t_6); __Pyx_INCREF(__pyx_t_2); __pyx_t_6++; if (unlikely(0 < 0)) __PYX_ERR(0, 156, __pyx_L1_error)
          #else
          __pyx_t_2 = PySequence_ITEM(__pyx_t_8, __pyx_t_6); __pyx_t_6++; if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 156, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_2);
          #endif
        }
      } else {
        __pyx_t_2 = __pyx_t_4(__pyx_t_8);
        if (unlikely(!__pyx_t_2)) {
          PyObject* exc_type = PyErr_Occurred();
          if (exc_type) {
            if (likely(__Pyx_PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))) PyErr_Clear();
            else __PYX_ERR(0, 156, __pyx_L1_error)
          }
          break;
        }
        __Pyx_GOTREF(__pyx_t_2);
      }
      __Pyx_XDECREF_SET(__pyx_v_key, __pyx_t_2);
      __pyx_t_2 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":157
 *         for vertex in self.vertices:
 *             for key in self._vertex_attributes[vertex]:
 *                 new_graph.set_vertex_attribtue(             # <<<<<<<<<<<<<<
 *                     vertex, key, self._vertex_attributes[vertex][key])
 * 
 */
      __pyx_t_5 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_new_graph), __pyx_n_s_set_vertex_attribtue); if (unlikely(!__pyx_t_5)) __PYX_ERR(0, 157, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_5);

      /* "cygraph/graph_/dynamic_graph.pyx":158
 *             for key in self._vertex_attributes[vertex]:
 *                 new_graph.set_vertex_attribtue(
 *                     vertex, key, self._vertex_attributes[vertex][key])             # <<<<<<<<<<<<<<
 * 
 *         return new_graph
 */
      if (unlikely(__pyx_v_self->__pyx_base._vertex_attributes == Py_None)) {
        PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
        __PYX_ERR(0, 158, __pyx_L1_error)
      }
      __pyx_t_9 = __Pyx_PyDict_GetItem(__pyx_v_self->__pyx_base._vertex_attributes, __pyx_v_vertex); if (unlikely(!__pyx_t_9)) __PYX_ERR(0, 158, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_9);
      __pyx_t_10 = __Pyx_PyObject_GetItem(__pyx_t_9, __pyx_v_key); if (unlikely(!__pyx_t_10)) __PYX_ERR(0, 158, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_10);
      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
      __pyx_t_9 = NULL;
      __pyx_t_11 = 0;
      if (CYTHON_UNPACK_METHODS && likely(PyMethod_Check(__pyx_t_5))) {
        __pyx_t_9 = PyMethod_GET_SELF(__pyx_t_5);
        if (likely(__pyx_t_9)) {
          PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_5);
          __Pyx_INCREF(__pyx_t_9);
          __Pyx_INCREF(function);
          __Pyx_DECREF_SET(__pyx_t_5, function);
          __pyx_t_11 = 1;
        }
      }
      #if CYTHON_FAST_PYCALL
      if (PyFunction_Check(__pyx_t_5)) {
        PyObject *__pyx_temp[4] = {__pyx_t_9, __pyx_v_vertex, __pyx_v_key, __pyx_t_10};
        __pyx_t_2 = __Pyx_PyFunction_FastCall(__pyx_t_5, __pyx_temp+1-__pyx_t_11, 3+__pyx_t_11); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 157, __pyx_L1_error)
        __Pyx_XDECREF(__pyx_t_9); __pyx_t_9 = 0;
        __Pyx_GOTREF(__pyx_t_2);
        __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
      } else
      #endif
      #if CYTHON_FAST_PYCCALL
      if (__Pyx_PyFastCFunction_Check(__pyx_t_5)) {
        PyObject *__pyx_temp[4] = {__pyx_t_9, __pyx_v_vertex, __pyx_v_key, __pyx_t_10};
        __pyx_t_2 = __Pyx_PyCFunction_FastCall(__pyx_t_5, __pyx_temp+1-__pyx_t_11, 3+__pyx_t_11); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 157, __pyx_L1_error)
        __Pyx_XDECREF(__pyx_t_9); __pyx_t_9 = 0;
        __Pyx_GOTREF(__pyx_t_2);
        __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
      } else
      #endif
      {
        __pyx_t_12 = PyTuple_New(3+__pyx_t_11); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 157, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_12);
        if (__pyx_t_9) {
          __Pyx_GIVEREF(__pyx_t_9); PyTuple_SET_ITEM(__pyx_t_12, 0, __pyx_t_9); __pyx_t_9 = NULL;
        }
        __Pyx_INCREF(__pyx_v_vertex);
        __Pyx_GIVEREF(__pyx_v_vertex);
        PyTuple_SET_ITEM(__pyx_t_12, 0+__pyx_t_11, __pyx_v_vertex);
        __Pyx_INCREF(__pyx_v_key);
        __Pyx_GIVEREF(__pyx_v_key);
        PyTuple_SET_ITEM(__pyx_t_12, 1+__pyx_t_11, __pyx_v_key);
        __Pyx_GIVEREF(__pyx_t_10);
        PyTuple_SET_ITEM(__pyx_t_12, 2+__pyx_t_11, __pyx_t_10);
        __pyx_t_10 = 0;
        __pyx_t_2 = __Pyx_PyObject_Call(__pyx_t_5, __pyx_t_12, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 157, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_2);
        __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
      }
      __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":156
 *         cdef object vertex
 *         for vertex in self.vertices:
 *             for key in self._vertex_attributes[vertex]:             # <<<<<<<<<<<<<<
 *                 new_graph.set_vertex_attribtue(
 *                     vertex, key, self._vertex_attributes[vertex][key])
 */
    }
    __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":155
 *         # Add vertex attributes.
 *         cdef object vertex
 *         for vertex in self.vertices:             # <<<<<<<<<<<<<<
 *             for key in self._vertex_attributes[vertex]:
 *                 new_graph.set_vertex_attribtue(
 */
  }
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":160
 *                     vertex, key, self._vertex_attributes[vertex][key])
 * 
 *         return new_graph             # <<<<<<<<<<<<<<
 * 
 *     def __reduce__(self):
 */
  __Pyx_XDECREF(__pyx_r);
  __Pyx_INCREF(((PyObject *)__pyx_v_new_graph));
  __pyx_r = ((PyObject *)__pyx_v_new_graph);
  goto __pyx_L0;

  /* "cygraph/graph_/dynamic_graph.pyx":140
 *                                 self._adjacency_matrix[vertex][vertex_] = 1.0
 * 
 *     def __copy__(self):             # <<<<<<<<<<<<<<
 *         cdef DynamicGraph new_graph = \
 *             DynamicGraph(directed=self.directed, vertices=self.vertices)
 */

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_5);
  __Pyx_XDECREF(__pyx_t_8);
  __Pyx_XDECREF(__pyx_t_9);
  __Pyx_XDECREF(__pyx_t_10);
  __Pyx_XDECREF(__pyx_t_12);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.__copy__", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XDECREF((PyObject *)__pyx_v_new_graph);
  __Pyx_XDECREF(__pyx_v_edge);
  __Pyx_XDECREF(__pyx_v_key);
  __Pyx_XDECREF(__pyx_v_vertex);
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":162
 *         return new_graph
 * 
 *     def __reduce__(self):             # <<<<<<<<<<<<<<
 *         return (rebuild_dynamic_graph, (self._vertex_attributes,
 *                 self._edge_attributes, self.vertices, self.directed,
 */

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_5__reduce__(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused); /*proto*/
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_5__reduce__(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused) {
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("__reduce__ (wrapper)", 0);
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_4__reduce__(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self));

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_4__reduce__(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self) {
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  PyObject *__pyx_t_2 = NULL;
  PyObject *__pyx_t_3 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("__reduce__", 0);

  /* "cygraph/graph_/dynamic_graph.pyx":163
 * 
 *     def __reduce__(self):
 *         return (rebuild_dynamic_graph, (self._vertex_attributes,             # <<<<<<<<<<<<<<
 *                 self._edge_attributes, self.vertices, self.directed,
 *                 self._adjacency_matrix))
 */
  __Pyx_XDECREF(__pyx_r);
  __Pyx_GetModuleGlobalName(__pyx_t_1, __pyx_n_s_rebuild_dynamic_graph); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 163, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);

  /* "cygraph/graph_/dynamic_graph.pyx":164
 *     def __reduce__(self):
 *         return (rebuild_dynamic_graph, (self._vertex_attributes,
 *                 self._edge_attributes, self.vertices, self.directed,             # <<<<<<<<<<<<<<
 *                 self._adjacency_matrix))
 * 
 */
  __pyx_t_2 = __Pyx_PyBool_FromLong(__pyx_v_self->__pyx_base.directed); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 164, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);

  /* "cygraph/graph_/dynamic_graph.pyx":163
 * 
 *     def __reduce__(self):
 *         return (rebuild_dynamic_graph, (self._vertex_attributes,             # <<<<<<<<<<<<<<
 *                 self._edge_attributes, self.vertices, self.directed,
 *                 self._adjacency_matrix))
 */
  __pyx_t_3 = PyTuple_New(5); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 163, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_3);
  __Pyx_INCREF(__pyx_v_self->__pyx_base._vertex_attributes);
  __Pyx_GIVEREF(__pyx_v_self->__pyx_base._vertex_attributes);
  PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_v_self->__pyx_base._vertex_attributes);
  __Pyx_INCREF(__pyx_v_self->__pyx_base._edge_attributes);
  __Pyx_GIVEREF(__pyx_v_self->__pyx_base._edge_attributes);
  PyTuple_SET_ITEM(__pyx_t_3, 1, __pyx_v_self->__pyx_base._edge_attributes);
  __Pyx_INCREF(__pyx_v_self->__pyx_base.vertices);
  __Pyx_GIVEREF(__pyx_v_self->__pyx_base.vertices);
  PyTuple_SET_ITEM(__pyx_t_3, 2, __pyx_v_self->__pyx_base.vertices);
  __Pyx_GIVEREF(__pyx_t_2);
  PyTuple_SET_ITEM(__pyx_t_3, 3, __pyx_t_2);
  __Pyx_INCREF(__pyx_v_self->_adjacency_matrix);
  __Pyx_GIVEREF(__pyx_v_self->_adjacency_matrix);
  PyTuple_SET_ITEM(__pyx_t_3, 4, __pyx_v_self->_adjacency_matrix);
  __pyx_t_2 = 0;
  __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 163, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __Pyx_GIVEREF(__pyx_t_1);
  PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_t_1);
  __Pyx_GIVEREF(__pyx_t_3);
  PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_t_3);
  __pyx_t_1 = 0;
  __pyx_t_3 = 0;
  __pyx_r = __pyx_t_2;
  __pyx_t_2 = 0;
  goto __pyx_L0;

  /* "cygraph/graph_/dynamic_graph.pyx":162
 *         return new_graph
 * 
 *     def __reduce__(self):             # <<<<<<<<<<<<<<
 *         return (rebuild_dynamic_graph, (self._vertex_attributes,
 *                 self._edge_attributes, self.vertices, self.directed,
 */

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_3);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.__reduce__", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":168
 * 
 *     @property
 *     def edges(self):             # <<<<<<<<<<<<<<
 *         cdef int u, v, n_vertices
 *         cdef set edges = set()
 */

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_5edges_1__get__(PyObject *__pyx_v_self); /*proto*/
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_5edges_1__get__(PyObject *__pyx_v_self) {
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("__get__ (wrapper)", 0);
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_5edges___get__(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self));

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_5edges___get__(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self) {
  int __pyx_v_u;
  int __pyx_v_v;
  int __pyx_v_n_vertices;
  PyObject *__pyx_v_edges = 0;
  PyObject *__pyx_v_new_edge = 0;
  PyObject *__pyx_v_existing_edge = 0;
  int __pyx_v_edge_found;
  PyObject *__pyx_v_edge_weight = 0;
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  Py_ssize_t __pyx_t_2;
  int __pyx_t_3;
  int __pyx_t_4;
  int __pyx_t_5;
  int __pyx_t_6;
  int __pyx_t_7;
  int __pyx_t_8;
  int __pyx_t_9;
  PyObject *__pyx_t_10 = NULL;
  int __pyx_t_11;
  PyObject *__pyx_t_12 = NULL;
  int __pyx_t_13;
  Py_ssize_t __pyx_t_14;
  int __pyx_t_15;
  int __pyx_t_16;
  PyObject *__pyx_t_17 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("__get__", 0);

  /* "cygraph/graph_/dynamic_graph.pyx":170
 *     def edges(self):
 *         cdef int u, v, n_vertices
 *         cdef set edges = set()             # <<<<<<<<<<<<<<
 *         cdef tuple new_edge, existing_edge
 *         cdef bint edge_found
 */
  __pyx_t_1 = PySet_New(0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 170, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_v_edges = ((PyObject*)__pyx_t_1);
  __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":175
 *         cdef object edge_weight  # Can also be NoneType.
 * 
 *         n_vertices = len(self.vertices)             # <<<<<<<<<<<<<<
 * 
 *         if self.directed:
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.vertices;
  __Pyx_INCREF(__pyx_t_1);
  if (unlikely(__pyx_t_1 == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
    __PYX_ERR(0, 175, __pyx_L1_error)
  }
  __pyx_t_2 = PyList_GET_SIZE(__pyx_t_1); if (unlikely(__pyx_t_2 == ((Py_ssize_t)-1))) __PYX_ERR(0, 175, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __pyx_v_n_vertices = __pyx_t_2;

  /* "cygraph/graph_/dynamic_graph.pyx":177
 *         n_vertices = len(self.vertices)
 * 
 *         if self.directed:             # <<<<<<<<<<<<<<
 *             for u in range(n_vertices):
 *                 for v in range(n_vertices):
 */
  __pyx_t_3 = (__pyx_v_self->__pyx_base.directed != 0);
  if (__pyx_t_3) {

    /* "cygraph/graph_/dynamic_graph.pyx":178
 * 
 *         if self.directed:
 *             for u in range(n_vertices):             # <<<<<<<<<<<<<<
 *                 for v in range(n_vertices):
 *                     edge_weight = self._adjacency_matrix[u][v]
 */
    __pyx_t_4 = __pyx_v_n_vertices;
    __pyx_t_5 = __pyx_t_4;
    for (__pyx_t_6 = 0; __pyx_t_6 < __pyx_t_5; __pyx_t_6+=1) {
      __pyx_v_u = __pyx_t_6;

      /* "cygraph/graph_/dynamic_graph.pyx":179
 *         if self.directed:
 *             for u in range(n_vertices):
 *                 for v in range(n_vertices):             # <<<<<<<<<<<<<<
 *                     edge_weight = self._adjacency_matrix[u][v]
 *                     if edge_weight is not None:
 */
      __pyx_t_7 = __pyx_v_n_vertices;
      __pyx_t_8 = __pyx_t_7;
      for (__pyx_t_9 = 0; __pyx_t_9 < __pyx_t_8; __pyx_t_9+=1) {
        __pyx_v_v = __pyx_t_9;

        /* "cygraph/graph_/dynamic_graph.pyx":180
 *             for u in range(n_vertices):
 *                 for v in range(n_vertices):
 *                     edge_weight = self._adjacency_matrix[u][v]             # <<<<<<<<<<<<<<
 *                     if edge_weight is not None:
 *                         edges.add(
 */
        if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
          PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
          __PYX_ERR(0, 180, __pyx_L1_error)
        }
        __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 180, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_1);
        __pyx_t_10 = __Pyx_GetItemInt(__pyx_t_1, __pyx_v_v, int, 1, __Pyx_PyInt_From_int, 0, 1, 1); if (unlikely(!__pyx_t_10)) __PYX_ERR(0, 180, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_10);
        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
        __Pyx_XDECREF_SET(__pyx_v_edge_weight, __pyx_t_10);
        __pyx_t_10 = 0;

        /* "cygraph/graph_/dynamic_graph.pyx":181
 *                 for v in range(n_vertices):
 *                     edge_weight = self._adjacency_matrix[u][v]
 *                     if edge_weight is not None:             # <<<<<<<<<<<<<<
 *                         edges.add(
 *                             (self.vertices[u],
 */
        __pyx_t_3 = (__pyx_v_edge_weight != Py_None);
        __pyx_t_11 = (__pyx_t_3 != 0);
        if (__pyx_t_11) {

          /* "cygraph/graph_/dynamic_graph.pyx":183
 *                     if edge_weight is not None:
 *                         edges.add(
 *                             (self.vertices[u],             # <<<<<<<<<<<<<<
 *                              self.vertices[v],
 *                              edge_weight)
 */
          if (unlikely(__pyx_v_self->__pyx_base.vertices == Py_None)) {
            PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
            __PYX_ERR(0, 183, __pyx_L1_error)
          }
          __pyx_t_10 = __Pyx_GetItemInt_List(__pyx_v_self->__pyx_base.vertices, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_10)) __PYX_ERR(0, 183, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_10);

          /* "cygraph/graph_/dynamic_graph.pyx":184
 *                         edges.add(
 *                             (self.vertices[u],
 *                              self.vertices[v],             # <<<<<<<<<<<<<<
 *                              edge_weight)
 *                         )
 */
          if (unlikely(__pyx_v_self->__pyx_base.vertices == Py_None)) {
            PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
            __PYX_ERR(0, 184, __pyx_L1_error)
          }
          __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->__pyx_base.vertices, __pyx_v_v, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 184, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_1);

          /* "cygraph/graph_/dynamic_graph.pyx":183
 *                     if edge_weight is not None:
 *                         edges.add(
 *                             (self.vertices[u],             # <<<<<<<<<<<<<<
 *                              self.vertices[v],
 *                              edge_weight)
 */
          __pyx_t_12 = PyTuple_New(3); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 183, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_12);
          __Pyx_GIVEREF(__pyx_t_10);
          PyTuple_SET_ITEM(__pyx_t_12, 0, __pyx_t_10);
          __Pyx_GIVEREF(__pyx_t_1);
          PyTuple_SET_ITEM(__pyx_t_12, 1, __pyx_t_1);
          __Pyx_INCREF(__pyx_v_edge_weight);
          __Pyx_GIVEREF(__pyx_v_edge_weight);
          PyTuple_SET_ITEM(__pyx_t_12, 2, __pyx_v_edge_weight);
          __pyx_t_10 = 0;
          __pyx_t_1 = 0;

          /* "cygraph/graph_/dynamic_graph.pyx":182
 *                     edge_weight = self._adjacency_matrix[u][v]
 *                     if edge_weight is not None:
 *                         edges.add(             # <<<<<<<<<<<<<<
 *                             (self.vertices[u],
 *                              self.vertices[v],
 */
          __pyx_t_13 = PySet_Add(__pyx_v_edges, __pyx_t_12); if (unlikely(__pyx_t_13 == ((int)-1))) __PYX_ERR(0, 182, __pyx_L1_error)
          __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;

          /* "cygraph/graph_/dynamic_graph.pyx":181
 *                 for v in range(n_vertices):
 *                     edge_weight = self._adjacency_matrix[u][v]
 *                     if edge_weight is not None:             # <<<<<<<<<<<<<<
 *                         edges.add(
 *                             (self.vertices[u],
 */
        }
      }
    }

    /* "cygraph/graph_/dynamic_graph.pyx":177
 *         n_vertices = len(self.vertices)
 * 
 *         if self.directed:             # <<<<<<<<<<<<<<
 *             for u in range(n_vertices):
 *                 for v in range(n_vertices):
 */
    goto __pyx_L3;
  }

  /* "cygraph/graph_/dynamic_graph.pyx":188
 *                         )
 *         else:
 *             for u in range(n_vertices):             # <<<<<<<<<<<<<<
 *                 for v in range(n_vertices):
 *                     edge_weight = self._adjacency_matrix[u][v]
 */
  /*else*/ {
    __pyx_t_4 = __pyx_v_n_vertices;
    __pyx_t_5 = __pyx_t_4;
    for (__pyx_t_6 = 0; __pyx_t_6 < __pyx_t_5; __pyx_t_6+=1) {
      __pyx_v_u = __pyx_t_6;

      /* "cygraph/graph_/dynamic_graph.pyx":189
 *         else:
 *             for u in range(n_vertices):
 *                 for v in range(n_vertices):             # <<<<<<<<<<<<<<
 *                     edge_weight = self._adjacency_matrix[u][v]
 *                     if edge_weight is not None:
 */
      __pyx_t_7 = __pyx_v_n_vertices;
      __pyx_t_8 = __pyx_t_7;
      for (__pyx_t_9 = 0; __pyx_t_9 < __pyx_t_8; __pyx_t_9+=1) {
        __pyx_v_v = __pyx_t_9;

        /* "cygraph/graph_/dynamic_graph.pyx":190
 *             for u in range(n_vertices):
 *                 for v in range(n_vertices):
 *                     edge_weight = self._adjacency_matrix[u][v]             # <<<<<<<<<<<<<<
 *                     if edge_weight is not None:
 *                         # Edge exists. Add it if it hasn't already been found.
 */
        if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
          PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
          __PYX_ERR(0, 190, __pyx_L1_error)
        }
        __pyx_t_12 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 190, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_12);
        __pyx_t_1 = __Pyx_GetItemInt(__pyx_t_12, __pyx_v_v, int, 1, __Pyx_PyInt_From_int, 0, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 190, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_1);
        __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
        __Pyx_XDECREF_SET(__pyx_v_edge_weight, __pyx_t_1);
        __pyx_t_1 = 0;

        /* "cygraph/graph_/dynamic_graph.pyx":191
 *                 for v in range(n_vertices):
 *                     edge_weight = self._adjacency_matrix[u][v]
 *                     if edge_weight is not None:             # <<<<<<<<<<<<<<
 *                         # Edge exists. Add it if it hasn't already been found.
 *                         new_edge = (
 */
        __pyx_t_11 = (__pyx_v_edge_weight != Py_None);
        __pyx_t_3 = (__pyx_t_11 != 0);
        if (__pyx_t_3) {

          /* "cygraph/graph_/dynamic_graph.pyx":194
 *                         # Edge exists. Add it if it hasn't already been found.
 *                         new_edge = (
 *                             self.vertices[u],             # <<<<<<<<<<<<<<
 *                             self.vertices[v],
 *                             edge_weight
 */
          if (unlikely(__pyx_v_self->__pyx_base.vertices == Py_None)) {
            PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
            __PYX_ERR(0, 194, __pyx_L1_error)
          }
          __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->__pyx_base.vertices, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 194, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_1);

          /* "cygraph/graph_/dynamic_graph.pyx":195
 *                         new_edge = (
 *                             self.vertices[u],
 *                             self.vertices[v],             # <<<<<<<<<<<<<<
 *                             edge_weight
 *                         )
 */
          if (unlikely(__pyx_v_self->__pyx_base.vertices == Py_None)) {
            PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
            __PYX_ERR(0, 195, __pyx_L1_error)
          }
          __pyx_t_12 = __Pyx_GetItemInt_List(__pyx_v_self->__pyx_base.vertices, __pyx_v_v, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 195, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_12);

          /* "cygraph/graph_/dynamic_graph.pyx":194
 *                         # Edge exists. Add it if it hasn't already been found.
 *                         new_edge = (
 *                             self.vertices[u],             # <<<<<<<<<<<<<<
 *                             self.vertices[v],
 *                             edge_weight
 */
          __pyx_t_10 = PyTuple_New(3); if (unlikely(!__pyx_t_10)) __PYX_ERR(0, 194, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_10);
          __Pyx_GIVEREF(__pyx_t_1);
          PyTuple_SET_ITEM(__pyx_t_10, 0, __pyx_t_1);
          __Pyx_GIVEREF(__pyx_t_12);
          PyTuple_SET_ITEM(__pyx_t_10, 1, __pyx_t_12);
          __Pyx_INCREF(__pyx_v_edge_weight);
          __Pyx_GIVEREF(__pyx_v_edge_weight);
          PyTuple_SET_ITEM(__pyx_t_10, 2, __pyx_v_edge_weight);
          __pyx_t_1 = 0;
          __pyx_t_12 = 0;
          __Pyx_XDECREF_SET(__pyx_v_new_edge, ((PyObject*)__pyx_t_10));
          __pyx_t_10 = 0;

          /* "cygraph/graph_/dynamic_graph.pyx":198
 *                             edge_weight
 *                         )
 *                         edge_found = False             # <<<<<<<<<<<<<<
 *                         for existing_edge in edges:
 *                             if (    existing_edge[0] == new_edge[1]
 */
          __pyx_v_edge_found = 0;

          /* "cygraph/graph_/dynamic_graph.pyx":199
 *                         )
 *                         edge_found = False
 *                         for existing_edge in edges:             # <<<<<<<<<<<<<<
 *                             if (    existing_edge[0] == new_edge[1]
 *                                     and existing_edge[1] == new_edge[0]):
 */
          __pyx_t_2 = 0;
          __pyx_t_12 = __Pyx_set_iterator(__pyx_v_edges, 1, (&__pyx_t_14), (&__pyx_t_15)); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 199, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_12);
          __Pyx_XDECREF(__pyx_t_10);
          __pyx_t_10 = __pyx_t_12;
          __pyx_t_12 = 0;
          while (1) {
            __pyx_t_16 = __Pyx_set_iter_next(__pyx_t_10, __pyx_t_14, &__pyx_t_2, &__pyx_t_12, __pyx_t_15);
            if (unlikely(__pyx_t_16 == 0)) break;
            if (unlikely(__pyx_t_16 == -1)) __PYX_ERR(0, 199, __pyx_L1_error)
            __Pyx_GOTREF(__pyx_t_12);
            if (!(likely(PyTuple_CheckExact(__pyx_t_12))||((__pyx_t_12) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "tuple", Py_TYPE(__pyx_t_12)->tp_name), 0))) __PYX_ERR(0, 199, __pyx_L1_error)
            __Pyx_XDECREF_SET(__pyx_v_existing_edge, ((PyObject*)__pyx_t_12));
            __pyx_t_12 = 0;

            /* "cygraph/graph_/dynamic_graph.pyx":200
 *                         edge_found = False
 *                         for existing_edge in edges:
 *                             if (    existing_edge[0] == new_edge[1]             # <<<<<<<<<<<<<<
 *                                     and existing_edge[1] == new_edge[0]):
 *                                 edge_found = True
 */
            if (unlikely(__pyx_v_existing_edge == Py_None)) {
              PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
              __PYX_ERR(0, 200, __pyx_L1_error)
            }
            __pyx_t_12 = __Pyx_GetItemInt_Tuple(__pyx_v_existing_edge, 0, long, 1, __Pyx_PyInt_From_long, 0, 0, 1); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 200, __pyx_L1_error)
            __Pyx_GOTREF(__pyx_t_12);
            __pyx_t_1 = __Pyx_GetItemInt_Tuple(__pyx_v_new_edge, 1, long, 1, __Pyx_PyInt_From_long, 0, 0, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 200, __pyx_L1_error)
            __Pyx_GOTREF(__pyx_t_1);
            __pyx_t_17 = PyObject_RichCompare(__pyx_t_12, __pyx_t_1, Py_EQ); __Pyx_XGOTREF(__pyx_t_17); if (unlikely(!__pyx_t_17)) __PYX_ERR(0, 200, __pyx_L1_error)
            __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
            __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
            __pyx_t_11 = __Pyx_PyObject_IsTrue(__pyx_t_17); if (unlikely(__pyx_t_11 < 0)) __PYX_ERR(0, 200, __pyx_L1_error)
            __Pyx_DECREF(__pyx_t_17); __pyx_t_17 = 0;
            if (__pyx_t_11) {
            } else {
              __pyx_t_3 = __pyx_t_11;
              goto __pyx_L17_bool_binop_done;
            }

            /* "cygraph/graph_/dynamic_graph.pyx":201
 *                         for existing_edge in edges:
 *                             if (    existing_edge[0] == new_edge[1]
 *                                     and existing_edge[1] == new_edge[0]):             # <<<<<<<<<<<<<<
 *                                 edge_found = True
 *                                 break
 */
            if (unlikely(__pyx_v_existing_edge == Py_None)) {
              PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
              __PYX_ERR(0, 201, __pyx_L1_error)
            }
            __pyx_t_17 = __Pyx_GetItemInt_Tuple(__pyx_v_existing_edge, 1, long, 1, __Pyx_PyInt_From_long, 0, 0, 1); if (unlikely(!__pyx_t_17)) __PYX_ERR(0, 201, __pyx_L1_error)
            __Pyx_GOTREF(__pyx_t_17);
            __pyx_t_1 = __Pyx_GetItemInt_Tuple(__pyx_v_new_edge, 0, long, 1, __Pyx_PyInt_From_long, 0, 0, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 201, __pyx_L1_error)
            __Pyx_GOTREF(__pyx_t_1);
            __pyx_t_12 = PyObject_RichCompare(__pyx_t_17, __pyx_t_1, Py_EQ); __Pyx_XGOTREF(__pyx_t_12); if (unlikely(!__pyx_t_12)) __PYX_ERR(0, 201, __pyx_L1_error)
            __Pyx_DECREF(__pyx_t_17); __pyx_t_17 = 0;
            __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
            __pyx_t_11 = __Pyx_PyObject_IsTrue(__pyx_t_12); if (unlikely(__pyx_t_11 < 0)) __PYX_ERR(0, 201, __pyx_L1_error)
            __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
            __pyx_t_3 = __pyx_t_11;
            __pyx_L17_bool_binop_done:;

            /* "cygraph/graph_/dynamic_graph.pyx":200
 *                         edge_found = False
 *                         for existing_edge in edges:
 *                             if (    existing_edge[0] == new_edge[1]             # <<<<<<<<<<<<<<
 *                                     and existing_edge[1] == new_edge[0]):
 *                                 edge_found = True
 */
            if (__pyx_t_3) {

              /* "cygraph/graph_/dynamic_graph.pyx":202
 *                             if (    existing_edge[0] == new_edge[1]
 *                                     and existing_edge[1] == new_edge[0]):
 *                                 edge_found = True             # <<<<<<<<<<<<<<
 *                                 break
 *                         if edge_found:
 */
              __pyx_v_edge_found = 1;

              /* "cygraph/graph_/dynamic_graph.pyx":203
 *                                     and existing_edge[1] == new_edge[0]):
 *                                 edge_found = True
 *                                 break             # <<<<<<<<<<<<<<
 *                         if edge_found:
 *                             continue
 */
              goto __pyx_L15_break;

              /* "cygraph/graph_/dynamic_graph.pyx":200
 *                         edge_found = False
 *                         for existing_edge in edges:
 *                             if (    existing_edge[0] == new_edge[1]             # <<<<<<<<<<<<<<
 *                                     and existing_edge[1] == new_edge[0]):
 *                                 edge_found = True
 */
            }
          }
          __pyx_L15_break:;
          __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;

          /* "cygraph/graph_/dynamic_graph.pyx":204
 *                                 edge_found = True
 *                                 break
 *                         if edge_found:             # <<<<<<<<<<<<<<
 *                             continue
 *                         else:
 */
          __pyx_t_3 = (__pyx_v_edge_found != 0);
          if (__pyx_t_3) {

            /* "cygraph/graph_/dynamic_graph.pyx":205
 *                                 break
 *                         if edge_found:
 *                             continue             # <<<<<<<<<<<<<<
 *                         else:
 *                             edges.add(new_edge)
 */
            goto __pyx_L11_continue;

            /* "cygraph/graph_/dynamic_graph.pyx":204
 *                                 edge_found = True
 *                                 break
 *                         if edge_found:             # <<<<<<<<<<<<<<
 *                             continue
 *                         else:
 */
          }

          /* "cygraph/graph_/dynamic_graph.pyx":207
 *                             continue
 *                         else:
 *                             edges.add(new_edge)             # <<<<<<<<<<<<<<
 *         return edges
 * 
 */
          /*else*/ {
            __pyx_t_13 = PySet_Add(__pyx_v_edges, __pyx_v_new_edge); if (unlikely(__pyx_t_13 == ((int)-1))) __PYX_ERR(0, 207, __pyx_L1_error)
          }

          /* "cygraph/graph_/dynamic_graph.pyx":191
 *                 for v in range(n_vertices):
 *                     edge_weight = self._adjacency_matrix[u][v]
 *                     if edge_weight is not None:             # <<<<<<<<<<<<<<
 *                         # Edge exists. Add it if it hasn't already been found.
 *                         new_edge = (
 */
        }
        __pyx_L11_continue:;
      }
    }
  }
  __pyx_L3:;

  /* "cygraph/graph_/dynamic_graph.pyx":208
 *                         else:
 *                             edges.add(new_edge)
 *         return edges             # <<<<<<<<<<<<<<
 * 
 *     cpdef void add_edge(self, object v1, object v2, double weight=1.0
 */
  __Pyx_XDECREF(__pyx_r);
  __Pyx_INCREF(__pyx_v_edges);
  __pyx_r = __pyx_v_edges;
  goto __pyx_L0;

  /* "cygraph/graph_/dynamic_graph.pyx":168
 * 
 *     @property
 *     def edges(self):             # <<<<<<<<<<<<<<
 *         cdef int u, v, n_vertices
 *         cdef set edges = set()
 */

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_10);
  __Pyx_XDECREF(__pyx_t_12);
  __Pyx_XDECREF(__pyx_t_17);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.edges.__get__", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XDECREF(__pyx_v_edges);
  __Pyx_XDECREF(__pyx_v_new_edge);
  __Pyx_XDECREF(__pyx_v_existing_edge);
  __Pyx_XDECREF(__pyx_v_edge_weight);
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":210
 *         return edges
 * 
 *     cpdef void add_edge(self, object v1, object v2, double weight=1.0             # <<<<<<<<<<<<<<
 *             ) except *:
 *         """Adds edge to graph between two vertices with a weight.
 */

static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_7add_edge(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static void __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_edge(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, int __pyx_skip_dispatch, struct __pyx_opt_args_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_edge *__pyx_optional_args) {
  double __pyx_v_weight = ((double)1.0);
  int __pyx_v_u;
  int __pyx_v_v;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  PyObject *__pyx_t_2 = NULL;
  PyObject *__pyx_t_3 = NULL;
  PyObject *__pyx_t_4 = NULL;
  PyObject *__pyx_t_5 = NULL;
  int __pyx_t_6;
  PyObject *__pyx_t_7 = NULL;
  int __pyx_t_8;
  int __pyx_t_9;
  Py_ssize_t __pyx_t_10;
  Py_UCS4 __pyx_t_11;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("add_edge", 0);
  if (__pyx_optional_args) {
    if (__pyx_optional_args->__pyx_n > 0) {
      __pyx_v_weight = __pyx_optional_args->weight;
    }
  }
  /* Check if called by wrapper */
  if (unlikely(__pyx_skip_dispatch)) ;
  /* Check if overridden in Python */
  else if (unlikely((Py_TYPE(((PyObject *)__pyx_v_self))->tp_dictoffset != 0) || (Py_TYPE(((PyObject *)__pyx_v_self))->tp_flags & (Py_TPFLAGS_IS_ABSTRACT | Py_TPFLAGS_HEAPTYPE)))) {
    #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    static PY_UINT64_T __pyx_tp_dict_version = __PYX_DICT_VERSION_INIT, __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
    if (unlikely(!__Pyx_object_dict_version_matches(((PyObject *)__pyx_v_self), __pyx_tp_dict_version, __pyx_obj_dict_version))) {
      PY_UINT64_T __pyx_type_dict_guard = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      #endif
      __pyx_t_1 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_add_edge); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 210, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_1);
      if (!PyCFunction_Check(__pyx_t_1) || (PyCFunction_GET_FUNCTION(__pyx_t_1) != (PyCFunction)(void*)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_7add_edge)) {
        __pyx_t_3 = PyFloat_FromDouble(__pyx_v_weight); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 210, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_3);
        __Pyx_INCREF(__pyx_t_1);
        __pyx_t_4 = __pyx_t_1; __pyx_t_5 = NULL;
        __pyx_t_6 = 0;
        if (CYTHON_UNPACK_METHODS && unlikely(PyMethod_Check(__pyx_t_4))) {
          __pyx_t_5 = PyMethod_GET_SELF(__pyx_t_4);
          if (likely(__pyx_t_5)) {
            PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_4);
            __Pyx_INCREF(__pyx_t_5);
            __Pyx_INCREF(function);
            __Pyx_DECREF_SET(__pyx_t_4, function);
            __pyx_t_6 = 1;
          }
        }
        #if CYTHON_FAST_PYCALL
        if (PyFunction_Check(__pyx_t_4)) {
          PyObject *__pyx_temp[4] = {__pyx_t_5, __pyx_v_v1, __pyx_v_v2, __pyx_t_3};
          __pyx_t_2 = __Pyx_PyFunction_FastCall(__pyx_t_4, __pyx_temp+1-__pyx_t_6, 3+__pyx_t_6); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 210, __pyx_L1_error)
          __Pyx_XDECREF(__pyx_t_5); __pyx_t_5 = 0;
          __Pyx_GOTREF(__pyx_t_2);
          __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
        } else
        #endif
        #if CYTHON_FAST_PYCCALL
        if (__Pyx_PyFastCFunction_Check(__pyx_t_4)) {
          PyObject *__pyx_temp[4] = {__pyx_t_5, __pyx_v_v1, __pyx_v_v2, __pyx_t_3};
          __pyx_t_2 = __Pyx_PyCFunction_FastCall(__pyx_t_4, __pyx_temp+1-__pyx_t_6, 3+__pyx_t_6); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 210, __pyx_L1_error)
          __Pyx_XDECREF(__pyx_t_5); __pyx_t_5 = 0;
          __Pyx_GOTREF(__pyx_t_2);
          __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
        } else
        #endif
        {
          __pyx_t_7 = PyTuple_New(3+__pyx_t_6); if (unlikely(!__pyx_t_7)) __PYX_ERR(0, 210, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_7);
          if (__pyx_t_5) {
            __Pyx_GIVEREF(__pyx_t_5); PyTuple_SET_ITEM(__pyx_t_7, 0, __pyx_t_5); __pyx_t_5 = NULL;
          }
          __Pyx_INCREF(__pyx_v_v1);
          __Pyx_GIVEREF(__pyx_v_v1);
          PyTuple_SET_ITEM(__pyx_t_7, 0+__pyx_t_6, __pyx_v_v1);
          __Pyx_INCREF(__pyx_v_v2);
          __Pyx_GIVEREF(__pyx_v_v2);
          PyTuple_SET_ITEM(__pyx_t_7, 1+__pyx_t_6, __pyx_v_v2);
          __Pyx_GIVEREF(__pyx_t_3);
          PyTuple_SET_ITEM(__pyx_t_7, 2+__pyx_t_6, __pyx_t_3);
          __pyx_t_3 = 0;
          __pyx_t_2 = __Pyx_PyObject_Call(__pyx_t_4, __pyx_t_7, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 210, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_2);
          __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
        }
        __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
        __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
        goto __pyx_L0;
      }
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
      __pyx_tp_dict_version = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      __pyx_obj_dict_version = __Pyx_get_object_dict_version(((PyObject *)__pyx_v_self));
      if (unlikely(__pyx_type_dict_guard != __pyx_tp_dict_version)) {
        __pyx_tp_dict_version = __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
      }
      #endif
      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    }
    #endif
  }

  /* "cygraph/graph_/dynamic_graph.pyx":223
 *             The weight of the edge.
 *         """
 *         cdef int u = self._get_vertex_int(v1)             # <<<<<<<<<<<<<<
 *         cdef int v = self._get_vertex_int(v2)
 * 
 */
  __pyx_t_6 = ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base._get_vertex_int(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_self), __pyx_v_v1); if (unlikely(__pyx_t_6 == ((int)-1))) __PYX_ERR(0, 223, __pyx_L1_error)
  __pyx_v_u = __pyx_t_6;

  /* "cygraph/graph_/dynamic_graph.pyx":224
 *         """
 *         cdef int u = self._get_vertex_int(v1)
 *         cdef int v = self._get_vertex_int(v2)             # <<<<<<<<<<<<<<
 * 
 *         if self._adjacency_matrix[u][v] is not None:
 */
  __pyx_t_6 = ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base._get_vertex_int(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_self), __pyx_v_v2); if (unlikely(__pyx_t_6 == ((int)-1))) __PYX_ERR(0, 224, __pyx_L1_error)
  __pyx_v_v = __pyx_t_6;

  /* "cygraph/graph_/dynamic_graph.pyx":226
 *         cdef int v = self._get_vertex_int(v2)
 * 
 *         if self._adjacency_matrix[u][v] is not None:             # <<<<<<<<<<<<<<
 *             raise ValueError(f"Edge ({v1}, {v2}) already exists.")
 * 
 */
  if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
    __PYX_ERR(0, 226, __pyx_L1_error)
  }
  __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 226, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_1, __pyx_v_v, int, 1, __Pyx_PyInt_From_int, 0, 1, 1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 226, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __pyx_t_8 = (__pyx_t_2 != Py_None);
  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
  __pyx_t_9 = (__pyx_t_8 != 0);
  if (unlikely(__pyx_t_9)) {

    /* "cygraph/graph_/dynamic_graph.pyx":227
 * 
 *         if self._adjacency_matrix[u][v] is not None:
 *             raise ValueError(f"Edge ({v1}, {v2}) already exists.")             # <<<<<<<<<<<<<<
 * 
 *         self._edge_attributes[(v1, v2)] = {}
 */
    __pyx_t_2 = PyTuple_New(5); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 227, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    __pyx_t_10 = 0;
    __pyx_t_11 = 127;
    __Pyx_INCREF(__pyx_kp_u_Edge);
    __pyx_t_10 += 6;
    __Pyx_GIVEREF(__pyx_kp_u_Edge);
    PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_kp_u_Edge);
    __pyx_t_1 = __Pyx_PyObject_FormatSimple(__pyx_v_v1, __pyx_empty_unicode); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 227, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    __pyx_t_11 = (__Pyx_PyUnicode_MAX_CHAR_VALUE(__pyx_t_1) > __pyx_t_11) ? __Pyx_PyUnicode_MAX_CHAR_VALUE(__pyx_t_1) : __pyx_t_11;
    __pyx_t_10 += __Pyx_PyUnicode_GET_LENGTH(__pyx_t_1);
    __Pyx_GIVEREF(__pyx_t_1);
    PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_t_1);
    __pyx_t_1 = 0;
    __Pyx_INCREF(__pyx_kp_u__6);
    __pyx_t_10 += 2;
    __Pyx_GIVEREF(__pyx_kp_u__6);
    PyTuple_SET_ITEM(__pyx_t_2, 2, __pyx_kp_u__6);
    __pyx_t_1 = __Pyx_PyObject_FormatSimple(__pyx_v_v2, __pyx_empty_unicode); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 227, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    __pyx_t_11 = (__Pyx_PyUnicode_MAX_CHAR_VALUE(__pyx_t_1) > __pyx_t_11) ? __Pyx_PyUnicode_MAX_CHAR_VALUE(__pyx_t_1) : __pyx_t_11;
    __pyx_t_10 += __Pyx_PyUnicode_GET_LENGTH(__pyx_t_1);
    __Pyx_GIVEREF(__pyx_t_1);
    PyTuple_SET_ITEM(__pyx_t_2, 3, __pyx_t_1);
    __pyx_t_1 = 0;
    __Pyx_INCREF(__pyx_kp_u_already_exists);
    __pyx_t_10 += 17;
    __Pyx_GIVEREF(__pyx_kp_u_already_exists);
    PyTuple_SET_ITEM(__pyx_t_2, 4, __pyx_kp_u_already_exists);
    __pyx_t_1 = __Pyx_PyUnicode_Join(__pyx_t_2, 5, __pyx_t_10, __pyx_t_11); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 227, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
    __pyx_t_2 = __Pyx_PyObject_CallOneArg(__pyx_builtin_ValueError, __pyx_t_1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 227, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
    __Pyx_Raise(__pyx_t_2, 0, 0, 0);
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
    __PYX_ERR(0, 227, __pyx_L1_error)

    /* "cygraph/graph_/dynamic_graph.pyx":226
 *         cdef int v = self._get_vertex_int(v2)
 * 
 *         if self._adjacency_matrix[u][v] is not None:             # <<<<<<<<<<<<<<
 *             raise ValueError(f"Edge ({v1}, {v2}) already exists.")
 * 
 */
  }

  /* "cygraph/graph_/dynamic_graph.pyx":229
 *             raise ValueError(f"Edge ({v1}, {v2}) already exists.")
 * 
 *         self._edge_attributes[(v1, v2)] = {}             # <<<<<<<<<<<<<<
 * 
 *         self._adjacency_matrix[u][v] = weight
 */
  __pyx_t_2 = __Pyx_PyDict_NewPresized(0); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 229, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  if (unlikely(__pyx_v_self->__pyx_base._edge_attributes == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
    __PYX_ERR(0, 229, __pyx_L1_error)
  }
  __pyx_t_1 = PyTuple_New(2); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 229, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __Pyx_INCREF(__pyx_v_v1);
  __Pyx_GIVEREF(__pyx_v_v1);
  PyTuple_SET_ITEM(__pyx_t_1, 0, __pyx_v_v1);
  __Pyx_INCREF(__pyx_v_v2);
  __Pyx_GIVEREF(__pyx_v_v2);
  PyTuple_SET_ITEM(__pyx_t_1, 1, __pyx_v_v2);
  if (unlikely(PyDict_SetItem(__pyx_v_self->__pyx_base._edge_attributes, __pyx_t_1, __pyx_t_2) < 0)) __PYX_ERR(0, 229, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":231
 *         self._edge_attributes[(v1, v2)] = {}
 * 
 *         self._adjacency_matrix[u][v] = weight             # <<<<<<<<<<<<<<
 *         if not self.directed:
 *             self._adjacency_matrix[v][u] = weight
 */
  __pyx_t_2 = PyFloat_FromDouble(__pyx_v_weight); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 231, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
    __PYX_ERR(0, 231, __pyx_L1_error)
  }
  __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 231, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  if (unlikely(__Pyx_SetItemInt(__pyx_t_1, __pyx_v_v, __pyx_t_2, int, 1, __Pyx_PyInt_From_int, 0, 1, 1) < 0)) __PYX_ERR(0, 231, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":232
 * 
 *         self._adjacency_matrix[u][v] = weight
 *         if not self.directed:             # <<<<<<<<<<<<<<
 *             self._adjacency_matrix[v][u] = weight
 * 
 */
  __pyx_t_9 = ((!(__pyx_v_self->__pyx_base.directed != 0)) != 0);
  if (__pyx_t_9) {

    /* "cygraph/graph_/dynamic_graph.pyx":233
 *         self._adjacency_matrix[u][v] = weight
 *         if not self.directed:
 *             self._adjacency_matrix[v][u] = weight             # <<<<<<<<<<<<<<
 * 
 *     cpdef void set_edge_weight(self, object v1, object v2, double weight
 */
    __pyx_t_2 = PyFloat_FromDouble(__pyx_v_weight); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 233, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
      __PYX_ERR(0, 233, __pyx_L1_error)
    }
    __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_v, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 233, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    if (unlikely(__Pyx_SetItemInt(__pyx_t_1, __pyx_v_u, __pyx_t_2, int, 1, __Pyx_PyInt_From_int, 0, 1, 1) < 0)) __PYX_ERR(0, 233, __pyx_L1_error)
    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":232
 * 
 *         self._adjacency_matrix[u][v] = weight
 *         if not self.directed:             # <<<<<<<<<<<<<<
 *             self._adjacency_matrix[v][u] = weight
 * 
 */
  }

  /* "cygraph/graph_/dynamic_graph.pyx":210
 *         return edges
 * 
 *     cpdef void add_edge(self, object v1, object v2, double weight=1.0             # <<<<<<<<<<<<<<
 *             ) except *:
 *         """Adds edge to graph between two vertices with a weight.
 */

  /* function exit code */
  goto __pyx_L0;
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_3);
  __Pyx_XDECREF(__pyx_t_4);
  __Pyx_XDECREF(__pyx_t_5);
  __Pyx_XDECREF(__pyx_t_7);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.add_edge", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_L0:;
  __Pyx_RefNannyFinishContext();
}

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_7add_edge(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static char __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_6add_edge[] = "Adds edge to graph between two vertices with a weight.\n\n        Parameters\n        ----------\n        v1\n            One of the edge's vertices.\n        v2\n            One of the edge's vertices.\n        weight: double, optional\n            The weight of the edge.\n        ";
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_7add_edge(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
  PyObject *__pyx_v_v1 = 0;
  PyObject *__pyx_v_v2 = 0;
  double __pyx_v_weight;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("add_edge (wrapper)", 0);
  {
    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s_v1,&__pyx_n_s_v2,&__pyx_n_s_weight,0};
    PyObject* values[3] = {0,0,0};
    if (unlikely(__pyx_kwds)) {
      Py_ssize_t kw_args;
      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
      switch (pos_args) {
        case  3: values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
        CYTHON_FALLTHROUGH;
        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
        CYTHON_FALLTHROUGH;
        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
        CYTHON_FALLTHROUGH;
        case  0: break;
        default: goto __pyx_L5_argtuple_error;
      }
      kw_args = PyDict_Size(__pyx_kwds);
      switch (pos_args) {
        case  0:
        if (likely((values[0] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_v1)) != 0)) kw_args--;
        else goto __pyx_L5_argtuple_error;
        CYTHON_FALLTHROUGH;
        case  1:
        if (likely((values[1] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_v2)) != 0)) kw_args--;
        else {
          __Pyx_RaiseArgtupleInvalid("add_edge", 0, 2, 3, 1); __PYX_ERR(0, 210, __pyx_L3_error)
        }
        CYTHON_FALLTHROUGH;
        case  2:
        if (kw_args > 0) {
          PyObject* value = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_weight);
          if (value) { values[2] = value; kw_args--; }
        }
      }
      if (unlikely(kw_args > 0)) {
        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "add_edge") < 0)) __PYX_ERR(0, 210, __pyx_L3_error)
      }
    } else {
      switch (PyTuple_GET_SIZE(__pyx_args)) {
        case  3: values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
        CYTHON_FALLTHROUGH;
        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
        values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
        break;
        default: goto __pyx_L5_argtuple_error;
      }
    }
    __pyx_v_v1 = values[0];
    __pyx_v_v2 = values[1];
    if (values[2]) {
      __pyx_v_weight = __pyx_PyFloat_AsDouble(values[2]); if (unlikely((__pyx_v_weight == (double)-1) && PyErr_Occurred())) __PYX_ERR(0, 210, __pyx_L3_error)
    } else {
      __pyx_v_weight = ((double)1.0);
    }
  }
  goto __pyx_L4_argument_unpacking_done;
  __pyx_L5_argtuple_error:;
  __Pyx_RaiseArgtupleInvalid("add_edge", 0, 2, 3, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 210, __pyx_L3_error)
  __pyx_L3_error:;
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.add_edge", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __Pyx_RefNannyFinishContext();
  return NULL;
  __pyx_L4_argument_unpacking_done:;
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_6add_edge(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self), __pyx_v_v1, __pyx_v_v2, __pyx_v_weight);

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_6add_edge(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, double __pyx_v_weight) {
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  struct __pyx_opt_args_7cygraph_6graph__5graph_5Graph_add_edge __pyx_t_1;
  PyObject *__pyx_t_2 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("add_edge", 0);
  __Pyx_XDECREF(__pyx_r);
  __pyx_t_1.__pyx_n = 1;
  __pyx_t_1.weight = __pyx_v_weight;
  __pyx_vtabptr_7cygraph_6graph__13dynamic_graph_DynamicGraph->__pyx_base.add_edge(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_self), __pyx_v_v1, __pyx_v_v2, 1, &__pyx_t_1); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 210, __pyx_L1_error)
  __pyx_t_2 = __Pyx_void_to_None(NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 210, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __pyx_r = __pyx_t_2;
  __pyx_t_2 = 0;
  goto __pyx_L0;

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.add_edge", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":235
 *             self._adjacency_matrix[v][u] = weight
 * 
 *     cpdef void set_edge_weight(self, object v1, object v2, double weight             # <<<<<<<<<<<<<<
 *             ) except *:
 *         """Changes the weight of an edge.
 */

static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_9set_edge_weight(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static void __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_set_edge_weight(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, double __pyx_v_weight, int __pyx_skip_dispatch) {
  int __pyx_v_u;
  int __pyx_v_v;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  PyObject *__pyx_t_2 = NULL;
  PyObject *__pyx_t_3 = NULL;
  PyObject *__pyx_t_4 = NULL;
  PyObject *__pyx_t_5 = NULL;
  int __pyx_t_6;
  PyObject *__pyx_t_7 = NULL;
  int __pyx_t_8;
  int __pyx_t_9;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("set_edge_weight", 0);
  /* Check if called by wrapper */
  if (unlikely(__pyx_skip_dispatch)) ;
  /* Check if overridden in Python */
  else if (unlikely((Py_TYPE(((PyObject *)__pyx_v_self))->tp_dictoffset != 0) || (Py_TYPE(((PyObject *)__pyx_v_self))->tp_flags & (Py_TPFLAGS_IS_ABSTRACT | Py_TPFLAGS_HEAPTYPE)))) {
    #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    static PY_UINT64_T __pyx_tp_dict_version = __PYX_DICT_VERSION_INIT, __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
    if (unlikely(!__Pyx_object_dict_version_matches(((PyObject *)__pyx_v_self), __pyx_tp_dict_version, __pyx_obj_dict_version))) {
      PY_UINT64_T __pyx_type_dict_guard = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      #endif
      __pyx_t_1 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_set_edge_weight); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 235, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_1);
      if (!PyCFunction_Check(__pyx_t_1) || (PyCFunction_GET_FUNCTION(__pyx_t_1) != (PyCFunction)(void*)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_9set_edge_weight)) {
        __pyx_t_3 = PyFloat_FromDouble(__pyx_v_weight); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 235, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_3);
        __Pyx_INCREF(__pyx_t_1);
        __pyx_t_4 = __pyx_t_1; __pyx_t_5 = NULL;
        __pyx_t_6 = 0;
        if (CYTHON_UNPACK_METHODS && unlikely(PyMethod_Check(__pyx_t_4))) {
          __pyx_t_5 = PyMethod_GET_SELF(__pyx_t_4);
          if (likely(__pyx_t_5)) {
            PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_4);
            __Pyx_INCREF(__pyx_t_5);
            __Pyx_INCREF(function);
            __Pyx_DECREF_SET(__pyx_t_4, function);
            __pyx_t_6 = 1;
          }
        }
        #if CYTHON_FAST_PYCALL
        if (PyFunction_Check(__pyx_t_4)) {
          PyObject *__pyx_temp[4] = {__pyx_t_5, __pyx_v_v1, __pyx_v_v2, __pyx_t_3};
          __pyx_t_2 = __Pyx_PyFunction_FastCall(__pyx_t_4, __pyx_temp+1-__pyx_t_6, 3+__pyx_t_6); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 235, __pyx_L1_error)
          __Pyx_XDECREF(__pyx_t_5); __pyx_t_5 = 0;
          __Pyx_GOTREF(__pyx_t_2);
          __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
        } else
        #endif
        #if CYTHON_FAST_PYCCALL
        if (__Pyx_PyFastCFunction_Check(__pyx_t_4)) {
          PyObject *__pyx_temp[4] = {__pyx_t_5, __pyx_v_v1, __pyx_v_v2, __pyx_t_3};
          __pyx_t_2 = __Pyx_PyCFunction_FastCall(__pyx_t_4, __pyx_temp+1-__pyx_t_6, 3+__pyx_t_6); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 235, __pyx_L1_error)
          __Pyx_XDECREF(__pyx_t_5); __pyx_t_5 = 0;
          __Pyx_GOTREF(__pyx_t_2);
          __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
        } else
        #endif
        {
          __pyx_t_7 = PyTuple_New(3+__pyx_t_6); if (unlikely(!__pyx_t_7)) __PYX_ERR(0, 235, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_7);
          if (__pyx_t_5) {
            __Pyx_GIVEREF(__pyx_t_5); PyTuple_SET_ITEM(__pyx_t_7, 0, __pyx_t_5); __pyx_t_5 = NULL;
          }
          __Pyx_INCREF(__pyx_v_v1);
          __Pyx_GIVEREF(__pyx_v_v1);
          PyTuple_SET_ITEM(__pyx_t_7, 0+__pyx_t_6, __pyx_v_v1);
          __Pyx_INCREF(__pyx_v_v2);
          __Pyx_GIVEREF(__pyx_v_v2);
          PyTuple_SET_ITEM(__pyx_t_7, 1+__pyx_t_6, __pyx_v_v2);
          __Pyx_GIVEREF(__pyx_t_3);
          PyTuple_SET_ITEM(__pyx_t_7, 2+__pyx_t_6, __pyx_t_3);
          __pyx_t_3 = 0;
          __pyx_t_2 = __Pyx_PyObject_Call(__pyx_t_4, __pyx_t_7, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 235, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_2);
          __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
        }
        __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
        __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
        goto __pyx_L0;
      }
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
      __pyx_tp_dict_version = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      __pyx_obj_dict_version = __Pyx_get_object_dict_version(((PyObject *)__pyx_v_self));
      if (unlikely(__pyx_type_dict_guard != __pyx_tp_dict_version)) {
        __pyx_tp_dict_version = __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
      }
      #endif
      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    }
    #endif
  }

  /* "cygraph/graph_/dynamic_graph.pyx":248
 *             The weight of the edge.
 *         """
 *         cdef int u = self._get_vertex_int(v1)             # <<<<<<<<<<<<<<
 *         cdef int v = self._get_vertex_int(v2)
 * 
 */
  __pyx_t_6 = ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base._get_vertex_int(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_self), __pyx_v_v1); if (unlikely(__pyx_t_6 == ((int)-1))) __PYX_ERR(0, 248, __pyx_L1_error)
  __pyx_v_u = __pyx_t_6;

  /* "cygraph/graph_/dynamic_graph.pyx":249
 *         """
 *         cdef int u = self._get_vertex_int(v1)
 *         cdef int v = self._get_vertex_int(v2)             # <<<<<<<<<<<<<<
 * 
 *         if self._adjacency_matrix[u][v] is None:
 */
  __pyx_t_6 = ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base._get_vertex_int(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_self), __pyx_v_v2); if (unlikely(__pyx_t_6 == ((int)-1))) __PYX_ERR(0, 249, __pyx_L1_error)
  __pyx_v_v = __pyx_t_6;

  /* "cygraph/graph_/dynamic_graph.pyx":251
 *         cdef int v = self._get_vertex_int(v2)
 * 
 *         if self._adjacency_matrix[u][v] is None:             # <<<<<<<<<<<<<<
 *             raise ValueError("Edge ({v1}, {v2}) doesn't exist.")
 * 
 */
  if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
    __PYX_ERR(0, 251, __pyx_L1_error)
  }
  __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 251, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_1, __pyx_v_v, int, 1, __Pyx_PyInt_From_int, 0, 1, 1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 251, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __pyx_t_8 = (__pyx_t_2 == Py_None);
  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
  __pyx_t_9 = (__pyx_t_8 != 0);
  if (unlikely(__pyx_t_9)) {

    /* "cygraph/graph_/dynamic_graph.pyx":252
 * 
 *         if self._adjacency_matrix[u][v] is None:
 *             raise ValueError("Edge ({v1}, {v2}) doesn't exist.")             # <<<<<<<<<<<<<<
 * 
 *         self._adjacency_matrix[u][v] = weight
 */
    __pyx_t_2 = __Pyx_PyObject_Call(__pyx_builtin_ValueError, __pyx_tuple__7, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 252, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    __Pyx_Raise(__pyx_t_2, 0, 0, 0);
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
    __PYX_ERR(0, 252, __pyx_L1_error)

    /* "cygraph/graph_/dynamic_graph.pyx":251
 *         cdef int v = self._get_vertex_int(v2)
 * 
 *         if self._adjacency_matrix[u][v] is None:             # <<<<<<<<<<<<<<
 *             raise ValueError("Edge ({v1}, {v2}) doesn't exist.")
 * 
 */
  }

  /* "cygraph/graph_/dynamic_graph.pyx":254
 *             raise ValueError("Edge ({v1}, {v2}) doesn't exist.")
 * 
 *         self._adjacency_matrix[u][v] = weight             # <<<<<<<<<<<<<<
 *         if not self.directed:
 *             self._adjacency_matrix[v][u] = weight
 */
  __pyx_t_2 = PyFloat_FromDouble(__pyx_v_weight); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 254, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
    __PYX_ERR(0, 254, __pyx_L1_error)
  }
  __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 254, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  if (unlikely(__Pyx_SetItemInt(__pyx_t_1, __pyx_v_v, __pyx_t_2, int, 1, __Pyx_PyInt_From_int, 0, 1, 1) < 0)) __PYX_ERR(0, 254, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":255
 * 
 *         self._adjacency_matrix[u][v] = weight
 *         if not self.directed:             # <<<<<<<<<<<<<<
 *             self._adjacency_matrix[v][u] = weight
 * 
 */
  __pyx_t_9 = ((!(__pyx_v_self->__pyx_base.directed != 0)) != 0);
  if (__pyx_t_9) {

    /* "cygraph/graph_/dynamic_graph.pyx":256
 *         self._adjacency_matrix[u][v] = weight
 *         if not self.directed:
 *             self._adjacency_matrix[v][u] = weight             # <<<<<<<<<<<<<<
 * 
 *     cpdef void remove_edge(self, object v1, object v2) except *:
 */
    __pyx_t_2 = PyFloat_FromDouble(__pyx_v_weight); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 256, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
      __PYX_ERR(0, 256, __pyx_L1_error)
    }
    __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_v, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 256, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    if (unlikely(__Pyx_SetItemInt(__pyx_t_1, __pyx_v_u, __pyx_t_2, int, 1, __Pyx_PyInt_From_int, 0, 1, 1) < 0)) __PYX_ERR(0, 256, __pyx_L1_error)
    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":255
 * 
 *         self._adjacency_matrix[u][v] = weight
 *         if not self.directed:             # <<<<<<<<<<<<<<
 *             self._adjacency_matrix[v][u] = weight
 * 
 */
  }

  /* "cygraph/graph_/dynamic_graph.pyx":235
 *             self._adjacency_matrix[v][u] = weight
 * 
 *     cpdef void set_edge_weight(self, object v1, object v2, double weight             # <<<<<<<<<<<<<<
 *             ) except *:
 *         """Changes the weight of an edge.
 */

  /* function exit code */
  goto __pyx_L0;
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_3);
  __Pyx_XDECREF(__pyx_t_4);
  __Pyx_XDECREF(__pyx_t_5);
  __Pyx_XDECREF(__pyx_t_7);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.set_edge_weight", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_L0:;
  __Pyx_RefNannyFinishContext();
}

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_9set_edge_weight(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static char __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_8set_edge_weight[] = "Changes the weight of an edge.\n\n        Parameters\n        ----------\n        v1\n            One of the edge's vertices.\n        v2\n            One of the edge's vertices.\n        weight: double\n            The weight of the edge.\n        ";
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_9set_edge_weight(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
  PyObject *__pyx_v_v1 = 0;
  PyObject *__pyx_v_v2 = 0;
  double __pyx_v_weight;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("set_edge_weight (wrapper)", 0);
  {
    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s_v1,&__pyx_n_s_v2,&__pyx_n_s_weight,0};
    PyObject* values[3] = {0,0,0};
    if (unlikely(__pyx_kwds)) {
      Py_ssize_t kw_args;
      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
      switch (pos_args) {
        case  3: values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
        CYTHON_FALLTHROUGH;
        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
        CYTHON_FALLTHROUGH;
        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
        CYTHON_FALLTHROUGH;
        case  0: break;
        default: goto __pyx_L5_argtuple_error;
      }
      kw_args = PyDict_Size(__pyx_kwds);
      switch (pos_args) {
        case  0:
        if (likely((values[0] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_v1)) != 0)) kw_args--;
        else goto __pyx_L5_argtuple_error;
        CYTHON_FALLTHROUGH;
        case  1:
        if (likely((values[1] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_v2)) != 0)) kw_args--;
        else {
          __Pyx_RaiseArgtupleInvalid("set_edge_weight", 1, 3, 3, 1); __PYX_ERR(0, 235, __pyx_L3_error)
        }
        CYTHON_FALLTHROUGH;
        case  2:
        if (likely((values[2] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_weight)) != 0)) kw_args--;
        else {
          __Pyx_RaiseArgtupleInvalid("set_edge_weight", 1, 3, 3, 2); __PYX_ERR(0, 235, __pyx_L3_error)
        }
      }
      if (unlikely(kw_args > 0)) {
        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "set_edge_weight") < 0)) __PYX_ERR(0, 235, __pyx_L3_error)
      }
    } else if (PyTuple_GET_SIZE(__pyx_args) != 3) {
      goto __pyx_L5_argtuple_error;
    } else {
      values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
      values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
      values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
    }
    __pyx_v_v1 = values[0];
    __pyx_v_v2 = values[1];
    __pyx_v_weight = __pyx_PyFloat_AsDouble(values[2]); if (unlikely((__pyx_v_weight == (double)-1) && PyErr_Occurred())) __PYX_ERR(0, 235, __pyx_L3_error)
  }
  goto __pyx_L4_argument_unpacking_done;
  __pyx_L5_argtuple_error:;
  __Pyx_RaiseArgtupleInvalid("set_edge_weight", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 235, __pyx_L3_error)
  __pyx_L3_error:;
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.set_edge_weight", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __Pyx_RefNannyFinishContext();
  return NULL;
  __pyx_L4_argument_unpacking_done:;
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_8set_edge_weight(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self), __pyx_v_v1, __pyx_v_v2, __pyx_v_weight);

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_8set_edge_weight(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, double __pyx_v_weight) {
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("set_edge_weight", 0);
  __Pyx_XDECREF(__pyx_r);
  __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_set_edge_weight(__pyx_v_self, __pyx_v_v1, __pyx_v_v2, __pyx_v_weight, 1); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 235, __pyx_L1_error)
  __pyx_t_1 = __Pyx_void_to_None(NULL); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 235, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_r = __pyx_t_1;
  __pyx_t_1 = 0;
  goto __pyx_L0;

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.set_edge_weight", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":258
 *             self._adjacency_matrix[v][u] = weight
 * 
 *     cpdef void remove_edge(self, object v1, object v2) except *:             # <<<<<<<<<<<<<<
 *         """Removes an edge between two vertices in this graph.
 * 
 */

static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_11remove_edge(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static void __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_remove_edge(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, int __pyx_skip_dispatch) {
  int __pyx_v_u;
  int __pyx_v_v;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  PyObject *__pyx_t_2 = NULL;
  PyObject *__pyx_t_3 = NULL;
  PyObject *__pyx_t_4 = NULL;
  int __pyx_t_5;
  PyObject *__pyx_t_6 = NULL;
  int __pyx_t_7;
  int __pyx_t_8;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("remove_edge", 0);
  /* Check if called by wrapper */
  if (unlikely(__pyx_skip_dispatch)) ;
  /* Check if overridden in Python */
  else if (unlikely((Py_TYPE(((PyObject *)__pyx_v_self))->tp_dictoffset != 0) || (Py_TYPE(((PyObject *)__pyx_v_self))->tp_flags & (Py_TPFLAGS_IS_ABSTRACT | Py_TPFLAGS_HEAPTYPE)))) {
    #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    static PY_UINT64_T __pyx_tp_dict_version = __PYX_DICT_VERSION_INIT, __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
    if (unlikely(!__Pyx_object_dict_version_matches(((PyObject *)__pyx_v_self), __pyx_tp_dict_version, __pyx_obj_dict_version))) {
      PY_UINT64_T __pyx_type_dict_guard = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      #endif
      __pyx_t_1 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_remove_edge); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 258, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_1);
      if (!PyCFunction_Check(__pyx_t_1) || (PyCFunction_GET_FUNCTION(__pyx_t_1) != (PyCFunction)(void*)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_11remove_edge)) {
        __Pyx_INCREF(__pyx_t_1);
        __pyx_t_3 = __pyx_t_1; __pyx_t_4 = NULL;
        __pyx_t_5 = 0;
        if (CYTHON_UNPACK_METHODS && unlikely(PyMethod_Check(__pyx_t_3))) {
          __pyx_t_4 = PyMethod_GET_SELF(__pyx_t_3);
          if (likely(__pyx_t_4)) {
            PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_3);
            __Pyx_INCREF(__pyx_t_4);
            __Pyx_INCREF(function);
            __Pyx_DECREF_SET(__pyx_t_3, function);
            __pyx_t_5 = 1;
          }
        }
        #if CYTHON_FAST_PYCALL
        if (PyFunction_Check(__pyx_t_3)) {
          PyObject *__pyx_temp[3] = {__pyx_t_4, __pyx_v_v1, __pyx_v_v2};
          __pyx_t_2 = __Pyx_PyFunction_FastCall(__pyx_t_3, __pyx_temp+1-__pyx_t_5, 2+__pyx_t_5); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 258, __pyx_L1_error)
          __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
          __Pyx_GOTREF(__pyx_t_2);
        } else
        #endif
        #if CYTHON_FAST_PYCCALL
        if (__Pyx_PyFastCFunction_Check(__pyx_t_3)) {
          PyObject *__pyx_temp[3] = {__pyx_t_4, __pyx_v_v1, __pyx_v_v2};
          __pyx_t_2 = __Pyx_PyCFunction_FastCall(__pyx_t_3, __pyx_temp+1-__pyx_t_5, 2+__pyx_t_5); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 258, __pyx_L1_error)
          __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
          __Pyx_GOTREF(__pyx_t_2);
        } else
        #endif
        {
          __pyx_t_6 = PyTuple_New(2+__pyx_t_5); if (unlikely(!__pyx_t_6)) __PYX_ERR(0, 258, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_6);
          if (__pyx_t_4) {
            __Pyx_GIVEREF(__pyx_t_4); PyTuple_SET_ITEM(__pyx_t_6, 0, __pyx_t_4); __pyx_t_4 = NULL;
          }
          __Pyx_INCREF(__pyx_v_v1);
          __Pyx_GIVEREF(__pyx_v_v1);
          PyTuple_SET_ITEM(__pyx_t_6, 0+__pyx_t_5, __pyx_v_v1);
          __Pyx_INCREF(__pyx_v_v2);
          __Pyx_GIVEREF(__pyx_v_v2);
          PyTuple_SET_ITEM(__pyx_t_6, 1+__pyx_t_5, __pyx_v_v2);
          __pyx_t_2 = __Pyx_PyObject_Call(__pyx_t_3, __pyx_t_6, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 258, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_2);
          __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
        }
        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
        __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
        goto __pyx_L0;
      }
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
      __pyx_tp_dict_version = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      __pyx_obj_dict_version = __Pyx_get_object_dict_version(((PyObject *)__pyx_v_self));
      if (unlikely(__pyx_type_dict_guard != __pyx_tp_dict_version)) {
        __pyx_tp_dict_version = __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
      }
      #endif
      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    }
    #endif
  }

  /* "cygraph/graph_/dynamic_graph.pyx":268
 *             One of the edge's vertices.
 *         """
 *         cdef int u = self._get_vertex_int(v1)             # <<<<<<<<<<<<<<
 *         cdef int v = self._get_vertex_int(v2)
 * 
 */
  __pyx_t_5 = ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base._get_vertex_int(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_self), __pyx_v_v1); if (unlikely(__pyx_t_5 == ((int)-1))) __PYX_ERR(0, 268, __pyx_L1_error)
  __pyx_v_u = __pyx_t_5;

  /* "cygraph/graph_/dynamic_graph.pyx":269
 *         """
 *         cdef int u = self._get_vertex_int(v1)
 *         cdef int v = self._get_vertex_int(v2)             # <<<<<<<<<<<<<<
 * 
 *         if self._adjacency_matrix[u][v] is None:
 */
  __pyx_t_5 = ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base._get_vertex_int(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_self), __pyx_v_v2); if (unlikely(__pyx_t_5 == ((int)-1))) __PYX_ERR(0, 269, __pyx_L1_error)
  __pyx_v_v = __pyx_t_5;

  /* "cygraph/graph_/dynamic_graph.pyx":271
 *         cdef int v = self._get_vertex_int(v2)
 * 
 *         if self._adjacency_matrix[u][v] is None:             # <<<<<<<<<<<<<<
 *             warnings.warn("Attempting to remove edge that doesn't exist.")
 *         else:
 */
  if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
    __PYX_ERR(0, 271, __pyx_L1_error)
  }
  __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 271, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_1, __pyx_v_v, int, 1, __Pyx_PyInt_From_int, 0, 1, 1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 271, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __pyx_t_7 = (__pyx_t_2 == Py_None);
  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
  __pyx_t_8 = (__pyx_t_7 != 0);
  if (__pyx_t_8) {

    /* "cygraph/graph_/dynamic_graph.pyx":272
 * 
 *         if self._adjacency_matrix[u][v] is None:
 *             warnings.warn("Attempting to remove edge that doesn't exist.")             # <<<<<<<<<<<<<<
 *         else:
 *             self._adjacency_matrix[u][v] = None
 */
    __Pyx_GetModuleGlobalName(__pyx_t_1, __pyx_n_s_warnings); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 272, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    __pyx_t_3 = __Pyx_PyObject_GetAttrStr(__pyx_t_1, __pyx_n_s_warn); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 272, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_3);
    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
    __pyx_t_1 = NULL;
    if (CYTHON_UNPACK_METHODS && unlikely(PyMethod_Check(__pyx_t_3))) {
      __pyx_t_1 = PyMethod_GET_SELF(__pyx_t_3);
      if (likely(__pyx_t_1)) {
        PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_3);
        __Pyx_INCREF(__pyx_t_1);
        __Pyx_INCREF(function);
        __Pyx_DECREF_SET(__pyx_t_3, function);
      }
    }
    __pyx_t_2 = (__pyx_t_1) ? __Pyx_PyObject_Call2Args(__pyx_t_3, __pyx_t_1, __pyx_kp_u_Attempting_to_remove_edge_that_d) : __Pyx_PyObject_CallOneArg(__pyx_t_3, __pyx_kp_u_Attempting_to_remove_edge_that_d);
    __Pyx_XDECREF(__pyx_t_1); __pyx_t_1 = 0;
    if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 272, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":271
 *         cdef int v = self._get_vertex_int(v2)
 * 
 *         if self._adjacency_matrix[u][v] is None:             # <<<<<<<<<<<<<<
 *             warnings.warn("Attempting to remove edge that doesn't exist.")
 *         else:
 */
    goto __pyx_L3;
  }

  /* "cygraph/graph_/dynamic_graph.pyx":274
 *             warnings.warn("Attempting to remove edge that doesn't exist.")
 *         else:
 *             self._adjacency_matrix[u][v] = None             # <<<<<<<<<<<<<<
 *             if not self.directed:
 *                 self._adjacency_matrix[v][u] = None
 */
  /*else*/ {
    if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
      __PYX_ERR(0, 274, __pyx_L1_error)
    }
    __pyx_t_2 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 274, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    if (unlikely(__Pyx_SetItemInt(__pyx_t_2, __pyx_v_v, Py_None, int, 1, __Pyx_PyInt_From_int, 0, 1, 1) < 0)) __PYX_ERR(0, 274, __pyx_L1_error)
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":275
 *         else:
 *             self._adjacency_matrix[u][v] = None
 *             if not self.directed:             # <<<<<<<<<<<<<<
 *                 self._adjacency_matrix[v][u] = None
 * 
 */
    __pyx_t_8 = ((!(__pyx_v_self->__pyx_base.directed != 0)) != 0);
    if (__pyx_t_8) {

      /* "cygraph/graph_/dynamic_graph.pyx":276
 *             self._adjacency_matrix[u][v] = None
 *             if not self.directed:
 *                 self._adjacency_matrix[v][u] = None             # <<<<<<<<<<<<<<
 * 
 *     cpdef bint has_edge(self, object v1, object v2) except *:
 */
      if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
        PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
        __PYX_ERR(0, 276, __pyx_L1_error)
      }
      __pyx_t_2 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_v, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 276, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_2);
      if (unlikely(__Pyx_SetItemInt(__pyx_t_2, __pyx_v_u, Py_None, int, 1, __Pyx_PyInt_From_int, 0, 1, 1) < 0)) __PYX_ERR(0, 276, __pyx_L1_error)
      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":275
 *         else:
 *             self._adjacency_matrix[u][v] = None
 *             if not self.directed:             # <<<<<<<<<<<<<<
 *                 self._adjacency_matrix[v][u] = None
 * 
 */
    }
  }
  __pyx_L3:;

  /* "cygraph/graph_/dynamic_graph.pyx":258
 *             self._adjacency_matrix[v][u] = weight
 * 
 *     cpdef void remove_edge(self, object v1, object v2) except *:             # <<<<<<<<<<<<<<
 *         """Removes an edge between two vertices in this graph.
 * 
 */

  /* function exit code */
  goto __pyx_L0;
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_3);
  __Pyx_XDECREF(__pyx_t_4);
  __Pyx_XDECREF(__pyx_t_6);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.remove_edge", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_L0:;
  __Pyx_RefNannyFinishContext();
}

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_11remove_edge(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static char __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_10remove_edge[] = "Removes an edge between two vertices in this graph.\n\n        Parameters\n        ----------\n        v1\n            One of the edge's vertices.\n        v2\n            One of the edge's vertices.\n        ";
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_11remove_edge(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
  PyObject *__pyx_v_v1 = 0;
  PyObject *__pyx_v_v2 = 0;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("remove_edge (wrapper)", 0);
  {
    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s_v1,&__pyx_n_s_v2,0};
    PyObject* values[2] = {0,0};
    if (unlikely(__pyx_kwds)) {
      Py_ssize_t kw_args;
      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
      switch (pos_args) {
        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
        CYTHON_FALLTHROUGH;
        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
        CYTHON_FALLTHROUGH;
        case  0: break;
        default: goto __pyx_L5_argtuple_error;
      }
      kw_args = PyDict_Size(__pyx_kwds);
      switch (pos_args) {
        case  0:
        if (likely((values[0] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_v1)) != 0)) kw_args--;
        else goto __pyx_L5_argtuple_error;
        CYTHON_FALLTHROUGH;
        case  1:
        if (likely((values[1] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_v2)) != 0)) kw_args--;
        else {
          __Pyx_RaiseArgtupleInvalid("remove_edge", 1, 2, 2, 1); __PYX_ERR(0, 258, __pyx_L3_error)
        }
      }
      if (unlikely(kw_args > 0)) {
        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "remove_edge") < 0)) __PYX_ERR(0, 258, __pyx_L3_error)
      }
    } else if (PyTuple_GET_SIZE(__pyx_args) != 2) {
      goto __pyx_L5_argtuple_error;
    } else {
      values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
      values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
    }
    __pyx_v_v1 = values[0];
    __pyx_v_v2 = values[1];
  }
  goto __pyx_L4_argument_unpacking_done;
  __pyx_L5_argtuple_error:;
  __Pyx_RaiseArgtupleInvalid("remove_edge", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 258, __pyx_L3_error)
  __pyx_L3_error:;
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.remove_edge", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __Pyx_RefNannyFinishContext();
  return NULL;
  __pyx_L4_argument_unpacking_done:;
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_10remove_edge(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self), __pyx_v_v1, __pyx_v_v2);

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_10remove_edge(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2) {
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("remove_edge", 0);
  __Pyx_XDECREF(__pyx_r);
  __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_remove_edge(__pyx_v_self, __pyx_v_v1, __pyx_v_v2, 1); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 258, __pyx_L1_error)
  __pyx_t_1 = __Pyx_void_to_None(NULL); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 258, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_r = __pyx_t_1;
  __pyx_t_1 = 0;
  goto __pyx_L0;

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.remove_edge", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":278
 *                 self._adjacency_matrix[v][u] = None
 * 
 *     cpdef bint has_edge(self, object v1, object v2) except *:             # <<<<<<<<<<<<<<
 *         """Returns whether or not an edge exists in this graph.
 * 
 */

static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_13has_edge(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static int __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_has_edge(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, int __pyx_skip_dispatch) {
  int __pyx_v_u;
  int __pyx_v_v;
  int __pyx_r;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  PyObject *__pyx_t_2 = NULL;
  PyObject *__pyx_t_3 = NULL;
  PyObject *__pyx_t_4 = NULL;
  int __pyx_t_5;
  PyObject *__pyx_t_6 = NULL;
  int __pyx_t_7;
  PyObject *__pyx_t_8 = NULL;
  PyObject *__pyx_t_9 = NULL;
  PyObject *__pyx_t_10 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("has_edge", 0);
  /* Check if called by wrapper */
  if (unlikely(__pyx_skip_dispatch)) ;
  /* Check if overridden in Python */
  else if (unlikely((Py_TYPE(((PyObject *)__pyx_v_self))->tp_dictoffset != 0) || (Py_TYPE(((PyObject *)__pyx_v_self))->tp_flags & (Py_TPFLAGS_IS_ABSTRACT | Py_TPFLAGS_HEAPTYPE)))) {
    #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    static PY_UINT64_T __pyx_tp_dict_version = __PYX_DICT_VERSION_INIT, __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
    if (unlikely(!__Pyx_object_dict_version_matches(((PyObject *)__pyx_v_self), __pyx_tp_dict_version, __pyx_obj_dict_version))) {
      PY_UINT64_T __pyx_type_dict_guard = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      #endif
      __pyx_t_1 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_has_edge); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 278, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_1);
      if (!PyCFunction_Check(__pyx_t_1) || (PyCFunction_GET_FUNCTION(__pyx_t_1) != (PyCFunction)(void*)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_13has_edge)) {
        __Pyx_INCREF(__pyx_t_1);
        __pyx_t_3 = __pyx_t_1; __pyx_t_4 = NULL;
        __pyx_t_5 = 0;
        if (CYTHON_UNPACK_METHODS && unlikely(PyMethod_Check(__pyx_t_3))) {
          __pyx_t_4 = PyMethod_GET_SELF(__pyx_t_3);
          if (likely(__pyx_t_4)) {
            PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_3);
            __Pyx_INCREF(__pyx_t_4);
            __Pyx_INCREF(function);
            __Pyx_DECREF_SET(__pyx_t_3, function);
            __pyx_t_5 = 1;
          }
        }
        #if CYTHON_FAST_PYCALL
        if (PyFunction_Check(__pyx_t_3)) {
          PyObject *__pyx_temp[3] = {__pyx_t_4, __pyx_v_v1, __pyx_v_v2};
          __pyx_t_2 = __Pyx_PyFunction_FastCall(__pyx_t_3, __pyx_temp+1-__pyx_t_5, 2+__pyx_t_5); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 278, __pyx_L1_error)
          __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
          __Pyx_GOTREF(__pyx_t_2);
        } else
        #endif
        #if CYTHON_FAST_PYCCALL
        if (__Pyx_PyFastCFunction_Check(__pyx_t_3)) {
          PyObject *__pyx_temp[3] = {__pyx_t_4, __pyx_v_v1, __pyx_v_v2};
          __pyx_t_2 = __Pyx_PyCFunction_FastCall(__pyx_t_3, __pyx_temp+1-__pyx_t_5, 2+__pyx_t_5); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 278, __pyx_L1_error)
          __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
          __Pyx_GOTREF(__pyx_t_2);
        } else
        #endif
        {
          __pyx_t_6 = PyTuple_New(2+__pyx_t_5); if (unlikely(!__pyx_t_6)) __PYX_ERR(0, 278, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_6);
          if (__pyx_t_4) {
            __Pyx_GIVEREF(__pyx_t_4); PyTuple_SET_ITEM(__pyx_t_6, 0, __pyx_t_4); __pyx_t_4 = NULL;
          }
          __Pyx_INCREF(__pyx_v_v1);
          __Pyx_GIVEREF(__pyx_v_v1);
          PyTuple_SET_ITEM(__pyx_t_6, 0+__pyx_t_5, __pyx_v_v1);
          __Pyx_INCREF(__pyx_v_v2);
          __Pyx_GIVEREF(__pyx_v_v2);
          PyTuple_SET_ITEM(__pyx_t_6, 1+__pyx_t_5, __pyx_v_v2);
          __pyx_t_2 = __Pyx_PyObject_Call(__pyx_t_3, __pyx_t_6, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 278, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_2);
          __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
        }
        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
        __pyx_t_7 = __Pyx_PyObject_IsTrue(__pyx_t_2); if (unlikely((__pyx_t_7 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 278, __pyx_L1_error)
        __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
        __pyx_r = __pyx_t_7;
        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
        goto __pyx_L0;
      }
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
      __pyx_tp_dict_version = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      __pyx_obj_dict_version = __Pyx_get_object_dict_version(((PyObject *)__pyx_v_self));
      if (unlikely(__pyx_type_dict_guard != __pyx_tp_dict_version)) {
        __pyx_tp_dict_version = __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
      }
      #endif
      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    }
    #endif
  }

  /* "cygraph/graph_/dynamic_graph.pyx":294
 *         """
 *         cdef int u, v
 *         try:             # <<<<<<<<<<<<<<
 *             u = self.vertices.index(v1)
 *             v = self.vertices.index(v2)
 */
  {
    __Pyx_PyThreadState_declare
    __Pyx_PyThreadState_assign
    __Pyx_ExceptionSave(&__pyx_t_8, &__pyx_t_9, &__pyx_t_10);
    __Pyx_XGOTREF(__pyx_t_8);
    __Pyx_XGOTREF(__pyx_t_9);
    __Pyx_XGOTREF(__pyx_t_10);
    /*try:*/ {

      /* "cygraph/graph_/dynamic_graph.pyx":295
 *         cdef int u, v
 *         try:
 *             u = self.vertices.index(v1)             # <<<<<<<<<<<<<<
 *             v = self.vertices.index(v2)
 *         except ValueError:
 */
      __pyx_t_2 = __Pyx_PyObject_GetAttrStr(__pyx_v_self->__pyx_base.vertices, __pyx_n_s_index); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 295, __pyx_L3_error)
      __Pyx_GOTREF(__pyx_t_2);
      __pyx_t_3 = NULL;
      if (CYTHON_UNPACK_METHODS && likely(PyMethod_Check(__pyx_t_2))) {
        __pyx_t_3 = PyMethod_GET_SELF(__pyx_t_2);
        if (likely(__pyx_t_3)) {
          PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_2);
          __Pyx_INCREF(__pyx_t_3);
          __Pyx_INCREF(function);
          __Pyx_DECREF_SET(__pyx_t_2, function);
        }
      }
      __pyx_t_1 = (__pyx_t_3) ? __Pyx_PyObject_Call2Args(__pyx_t_2, __pyx_t_3, __pyx_v_v1) : __Pyx_PyObject_CallOneArg(__pyx_t_2, __pyx_v_v1);
      __Pyx_XDECREF(__pyx_t_3); __pyx_t_3 = 0;
      if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 295, __pyx_L3_error)
      __Pyx_GOTREF(__pyx_t_1);
      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
      __pyx_t_5 = __Pyx_PyInt_As_int(__pyx_t_1); if (unlikely((__pyx_t_5 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 295, __pyx_L3_error)
      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
      __pyx_v_u = __pyx_t_5;

      /* "cygraph/graph_/dynamic_graph.pyx":296
 *         try:
 *             u = self.vertices.index(v1)
 *             v = self.vertices.index(v2)             # <<<<<<<<<<<<<<
 *         except ValueError:
 *             return False
 */
      __pyx_t_2 = __Pyx_PyObject_GetAttrStr(__pyx_v_self->__pyx_base.vertices, __pyx_n_s_index); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 296, __pyx_L3_error)
      __Pyx_GOTREF(__pyx_t_2);
      __pyx_t_3 = NULL;
      if (CYTHON_UNPACK_METHODS && likely(PyMethod_Check(__pyx_t_2))) {
        __pyx_t_3 = PyMethod_GET_SELF(__pyx_t_2);
        if (likely(__pyx_t_3)) {
          PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_2);
          __Pyx_INCREF(__pyx_t_3);
          __Pyx_INCREF(function);
          __Pyx_DECREF_SET(__pyx_t_2, function);
        }
      }
      __pyx_t_1 = (__pyx_t_3) ? __Pyx_PyObject_Call2Args(__pyx_t_2, __pyx_t_3, __pyx_v_v2) : __Pyx_PyObject_CallOneArg(__pyx_t_2, __pyx_v_v2);
      __Pyx_XDECREF(__pyx_t_3); __pyx_t_3 = 0;
      if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 296, __pyx_L3_error)
      __Pyx_GOTREF(__pyx_t_1);
      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
      __pyx_t_5 = __Pyx_PyInt_As_int(__pyx_t_1); if (unlikely((__pyx_t_5 == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 296, __pyx_L3_error)
      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
      __pyx_v_v = __pyx_t_5;

      /* "cygraph/graph_/dynamic_graph.pyx":294
 *         """
 *         cdef int u, v
 *         try:             # <<<<<<<<<<<<<<
 *             u = self.vertices.index(v1)
 *             v = self.vertices.index(v2)
 */
    }
    __Pyx_XDECREF(__pyx_t_8); __pyx_t_8 = 0;
    __Pyx_XDECREF(__pyx_t_9); __pyx_t_9 = 0;
    __Pyx_XDECREF(__pyx_t_10); __pyx_t_10 = 0;
    goto __pyx_L8_try_end;
    __pyx_L3_error:;
    __Pyx_XDECREF(__pyx_t_1); __pyx_t_1 = 0;
    __Pyx_XDECREF(__pyx_t_2); __pyx_t_2 = 0;
    __Pyx_XDECREF(__pyx_t_3); __pyx_t_3 = 0;
    __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
    __Pyx_XDECREF(__pyx_t_6); __pyx_t_6 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":297
 *             u = self.vertices.index(v1)
 *             v = self.vertices.index(v2)
 *         except ValueError:             # <<<<<<<<<<<<<<
 *             return False
 * 
 */
    __pyx_t_5 = __Pyx_PyErr_ExceptionMatches(__pyx_builtin_ValueError);
    if (__pyx_t_5) {
      __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.has_edge", __pyx_clineno, __pyx_lineno, __pyx_filename);
      if (__Pyx_GetException(&__pyx_t_1, &__pyx_t_2, &__pyx_t_3) < 0) __PYX_ERR(0, 297, __pyx_L5_except_error)
      __Pyx_GOTREF(__pyx_t_1);
      __Pyx_GOTREF(__pyx_t_2);
      __Pyx_GOTREF(__pyx_t_3);

      /* "cygraph/graph_/dynamic_graph.pyx":298
 *             v = self.vertices.index(v2)
 *         except ValueError:
 *             return False             # <<<<<<<<<<<<<<
 * 
 *         return self._adjacency_matrix[u][v] is not None
 */
      __pyx_r = 0;
      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
      goto __pyx_L6_except_return;
    }
    goto __pyx_L5_except_error;
    __pyx_L5_except_error:;

    /* "cygraph/graph_/dynamic_graph.pyx":294
 *         """
 *         cdef int u, v
 *         try:             # <<<<<<<<<<<<<<
 *             u = self.vertices.index(v1)
 *             v = self.vertices.index(v2)
 */
    __Pyx_XGIVEREF(__pyx_t_8);
    __Pyx_XGIVEREF(__pyx_t_9);
    __Pyx_XGIVEREF(__pyx_t_10);
    __Pyx_ExceptionReset(__pyx_t_8, __pyx_t_9, __pyx_t_10);
    goto __pyx_L1_error;
    __pyx_L6_except_return:;
    __Pyx_XGIVEREF(__pyx_t_8);
    __Pyx_XGIVEREF(__pyx_t_9);
    __Pyx_XGIVEREF(__pyx_t_10);
    __Pyx_ExceptionReset(__pyx_t_8, __pyx_t_9, __pyx_t_10);
    goto __pyx_L0;
    __pyx_L8_try_end:;
  }

  /* "cygraph/graph_/dynamic_graph.pyx":300
 *             return False
 * 
 *         return self._adjacency_matrix[u][v] is not None             # <<<<<<<<<<<<<<
 * 
 *     cpdef double get_edge_weight(self, object v1, object v2) except *:
 */
  if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
    __PYX_ERR(0, 300, __pyx_L1_error)
  }
  __pyx_t_3 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 300, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_3);
  __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_3, __pyx_v_v, int, 1, __Pyx_PyInt_From_int, 0, 1, 1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 300, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
  __pyx_t_7 = (__pyx_t_2 != Py_None);
  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
  __pyx_r = __pyx_t_7;
  goto __pyx_L0;

  /* "cygraph/graph_/dynamic_graph.pyx":278
 *                 self._adjacency_matrix[v][u] = None
 * 
 *     cpdef bint has_edge(self, object v1, object v2) except *:             # <<<<<<<<<<<<<<
 *         """Returns whether or not an edge exists in this graph.
 * 
 */

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_3);
  __Pyx_XDECREF(__pyx_t_4);
  __Pyx_XDECREF(__pyx_t_6);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.has_edge", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = 0;
  __pyx_L0:;
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_13has_edge(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static char __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_12has_edge[] = "Returns whether or not an edge exists in this graph.\n\n        Parameters\n        ----------\n        v1\n            First vertex of the edge.\n        v2\n            Second vertex of the edge.\n\n        Returns\n        -------\n        bint\n            Whether or not edge is in graph.\n        ";
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_13has_edge(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
  PyObject *__pyx_v_v1 = 0;
  PyObject *__pyx_v_v2 = 0;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("has_edge (wrapper)", 0);
  {
    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s_v1,&__pyx_n_s_v2,0};
    PyObject* values[2] = {0,0};
    if (unlikely(__pyx_kwds)) {
      Py_ssize_t kw_args;
      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
      switch (pos_args) {
        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
        CYTHON_FALLTHROUGH;
        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
        CYTHON_FALLTHROUGH;
        case  0: break;
        default: goto __pyx_L5_argtuple_error;
      }
      kw_args = PyDict_Size(__pyx_kwds);
      switch (pos_args) {
        case  0:
        if (likely((values[0] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_v1)) != 0)) kw_args--;
        else goto __pyx_L5_argtuple_error;
        CYTHON_FALLTHROUGH;
        case  1:
        if (likely((values[1] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_v2)) != 0)) kw_args--;
        else {
          __Pyx_RaiseArgtupleInvalid("has_edge", 1, 2, 2, 1); __PYX_ERR(0, 278, __pyx_L3_error)
        }
      }
      if (unlikely(kw_args > 0)) {
        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "has_edge") < 0)) __PYX_ERR(0, 278, __pyx_L3_error)
      }
    } else if (PyTuple_GET_SIZE(__pyx_args) != 2) {
      goto __pyx_L5_argtuple_error;
    } else {
      values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
      values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
    }
    __pyx_v_v1 = values[0];
    __pyx_v_v2 = values[1];
  }
  goto __pyx_L4_argument_unpacking_done;
  __pyx_L5_argtuple_error:;
  __Pyx_RaiseArgtupleInvalid("has_edge", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 278, __pyx_L3_error)
  __pyx_L3_error:;
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.has_edge", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __Pyx_RefNannyFinishContext();
  return NULL;
  __pyx_L4_argument_unpacking_done:;
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_12has_edge(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self), __pyx_v_v1, __pyx_v_v2);

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_12has_edge(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2) {
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  int __pyx_t_1;
  PyObject *__pyx_t_2 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("has_edge", 0);
  __Pyx_XDECREF(__pyx_r);
  __pyx_t_1 = __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_has_edge(__pyx_v_self, __pyx_v_v1, __pyx_v_v2, 1); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 278, __pyx_L1_error)
  __pyx_t_2 = __Pyx_PyBool_FromLong(__pyx_t_1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 278, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __pyx_r = __pyx_t_2;
  __pyx_t_2 = 0;
  goto __pyx_L0;

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.has_edge", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":302
 *         return self._adjacency_matrix[u][v] is not None
 * 
 *     cpdef double get_edge_weight(self, object v1, object v2) except *:             # <<<<<<<<<<<<<<
 *         """Returns the weight of the edge between vertices v1 and v2.
 * 
 */

static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_15get_edge_weight(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static double __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_get_edge_weight(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2, int __pyx_skip_dispatch) {
  int __pyx_v_u;
  int __pyx_v_v;
  PyObject *__pyx_v_weight = NULL;
  double __pyx_r;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  PyObject *__pyx_t_2 = NULL;
  PyObject *__pyx_t_3 = NULL;
  PyObject *__pyx_t_4 = NULL;
  int __pyx_t_5;
  PyObject *__pyx_t_6 = NULL;
  double __pyx_t_7;
  int __pyx_t_8;
  int __pyx_t_9;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("get_edge_weight", 0);
  /* Check if called by wrapper */
  if (unlikely(__pyx_skip_dispatch)) ;
  /* Check if overridden in Python */
  else if (unlikely((Py_TYPE(((PyObject *)__pyx_v_self))->tp_dictoffset != 0) || (Py_TYPE(((PyObject *)__pyx_v_self))->tp_flags & (Py_TPFLAGS_IS_ABSTRACT | Py_TPFLAGS_HEAPTYPE)))) {
    #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    static PY_UINT64_T __pyx_tp_dict_version = __PYX_DICT_VERSION_INIT, __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
    if (unlikely(!__Pyx_object_dict_version_matches(((PyObject *)__pyx_v_self), __pyx_tp_dict_version, __pyx_obj_dict_version))) {
      PY_UINT64_T __pyx_type_dict_guard = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      #endif
      __pyx_t_1 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_get_edge_weight); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 302, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_1);
      if (!PyCFunction_Check(__pyx_t_1) || (PyCFunction_GET_FUNCTION(__pyx_t_1) != (PyCFunction)(void*)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_15get_edge_weight)) {
        __Pyx_INCREF(__pyx_t_1);
        __pyx_t_3 = __pyx_t_1; __pyx_t_4 = NULL;
        __pyx_t_5 = 0;
        if (CYTHON_UNPACK_METHODS && unlikely(PyMethod_Check(__pyx_t_3))) {
          __pyx_t_4 = PyMethod_GET_SELF(__pyx_t_3);
          if (likely(__pyx_t_4)) {
            PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_3);
            __Pyx_INCREF(__pyx_t_4);
            __Pyx_INCREF(function);
            __Pyx_DECREF_SET(__pyx_t_3, function);
            __pyx_t_5 = 1;
          }
        }
        #if CYTHON_FAST_PYCALL
        if (PyFunction_Check(__pyx_t_3)) {
          PyObject *__pyx_temp[3] = {__pyx_t_4, __pyx_v_v1, __pyx_v_v2};
          __pyx_t_2 = __Pyx_PyFunction_FastCall(__pyx_t_3, __pyx_temp+1-__pyx_t_5, 2+__pyx_t_5); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 302, __pyx_L1_error)
          __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
          __Pyx_GOTREF(__pyx_t_2);
        } else
        #endif
        #if CYTHON_FAST_PYCCALL
        if (__Pyx_PyFastCFunction_Check(__pyx_t_3)) {
          PyObject *__pyx_temp[3] = {__pyx_t_4, __pyx_v_v1, __pyx_v_v2};
          __pyx_t_2 = __Pyx_PyCFunction_FastCall(__pyx_t_3, __pyx_temp+1-__pyx_t_5, 2+__pyx_t_5); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 302, __pyx_L1_error)
          __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
          __Pyx_GOTREF(__pyx_t_2);
        } else
        #endif
        {
          __pyx_t_6 = PyTuple_New(2+__pyx_t_5); if (unlikely(!__pyx_t_6)) __PYX_ERR(0, 302, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_6);
          if (__pyx_t_4) {
            __Pyx_GIVEREF(__pyx_t_4); PyTuple_SET_ITEM(__pyx_t_6, 0, __pyx_t_4); __pyx_t_4 = NULL;
          }
          __Pyx_INCREF(__pyx_v_v1);
          __Pyx_GIVEREF(__pyx_v_v1);
          PyTuple_SET_ITEM(__pyx_t_6, 0+__pyx_t_5, __pyx_v_v1);
          __Pyx_INCREF(__pyx_v_v2);
          __Pyx_GIVEREF(__pyx_v_v2);
          PyTuple_SET_ITEM(__pyx_t_6, 1+__pyx_t_5, __pyx_v_v2);
          __pyx_t_2 = __Pyx_PyObject_Call(__pyx_t_3, __pyx_t_6, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 302, __pyx_L1_error)
          __Pyx_GOTREF(__pyx_t_2);
          __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
        }
        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
        __pyx_t_7 = __pyx_PyFloat_AsDouble(__pyx_t_2); if (unlikely((__pyx_t_7 == (double)-1) && PyErr_Occurred())) __PYX_ERR(0, 302, __pyx_L1_error)
        __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
        __pyx_r = __pyx_t_7;
        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
        goto __pyx_L0;
      }
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
      __pyx_tp_dict_version = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      __pyx_obj_dict_version = __Pyx_get_object_dict_version(((PyObject *)__pyx_v_self));
      if (unlikely(__pyx_type_dict_guard != __pyx_tp_dict_version)) {
        __pyx_tp_dict_version = __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
      }
      #endif
      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    }
    #endif
  }

  /* "cygraph/graph_/dynamic_graph.pyx":317
 *             The weight of the edge between v1 and v2.
 *         """
 *         cdef int u = self._get_vertex_int(v1)             # <<<<<<<<<<<<<<
 *         cdef int v = self._get_vertex_int(v2)
 *         weight = self._adjacency_matrix[u][v]
 */
  __pyx_t_5 = ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base._get_vertex_int(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_self), __pyx_v_v1); if (unlikely(__pyx_t_5 == ((int)-1))) __PYX_ERR(0, 317, __pyx_L1_error)
  __pyx_v_u = __pyx_t_5;

  /* "cygraph/graph_/dynamic_graph.pyx":318
 *         """
 *         cdef int u = self._get_vertex_int(v1)
 *         cdef int v = self._get_vertex_int(v2)             # <<<<<<<<<<<<<<
 *         weight = self._adjacency_matrix[u][v]
 *         if weight is not None:
 */
  __pyx_t_5 = ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base._get_vertex_int(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_self), __pyx_v_v2); if (unlikely(__pyx_t_5 == ((int)-1))) __PYX_ERR(0, 318, __pyx_L1_error)
  __pyx_v_v = __pyx_t_5;

  /* "cygraph/graph_/dynamic_graph.pyx":319
 *         cdef int u = self._get_vertex_int(v1)
 *         cdef int v = self._get_vertex_int(v2)
 *         weight = self._adjacency_matrix[u][v]             # <<<<<<<<<<<<<<
 *         if weight is not None:
 *             return weight
 */
  if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
    __PYX_ERR(0, 319, __pyx_L1_error)
  }
  __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 319, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_1, __pyx_v_v, int, 1, __Pyx_PyInt_From_int, 0, 1, 1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 319, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __pyx_v_weight = __pyx_t_2;
  __pyx_t_2 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":320
 *         cdef int v = self._get_vertex_int(v2)
 *         weight = self._adjacency_matrix[u][v]
 *         if weight is not None:             # <<<<<<<<<<<<<<
 *             return weight
 *         else:
 */
  __pyx_t_8 = (__pyx_v_weight != Py_None);
  __pyx_t_9 = (__pyx_t_8 != 0);
  if (likely(__pyx_t_9)) {

    /* "cygraph/graph_/dynamic_graph.pyx":321
 *         weight = self._adjacency_matrix[u][v]
 *         if weight is not None:
 *             return weight             # <<<<<<<<<<<<<<
 *         else:
 *             raise ValueError("edge ({v1}, {v2}) is not in graph.")
 */
    __pyx_t_7 = __pyx_PyFloat_AsDouble(__pyx_v_weight); if (unlikely((__pyx_t_7 == (double)-1) && PyErr_Occurred())) __PYX_ERR(0, 321, __pyx_L1_error)
    __pyx_r = __pyx_t_7;
    goto __pyx_L0;

    /* "cygraph/graph_/dynamic_graph.pyx":320
 *         cdef int v = self._get_vertex_int(v2)
 *         weight = self._adjacency_matrix[u][v]
 *         if weight is not None:             # <<<<<<<<<<<<<<
 *             return weight
 *         else:
 */
  }

  /* "cygraph/graph_/dynamic_graph.pyx":323
 *             return weight
 *         else:
 *             raise ValueError("edge ({v1}, {v2}) is not in graph.")             # <<<<<<<<<<<<<<
 * 
 *     cpdef void add_vertex(self, object v) except *:
 */
  /*else*/ {
    __pyx_t_2 = __Pyx_PyObject_Call(__pyx_builtin_ValueError, __pyx_tuple__8, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 323, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    __Pyx_Raise(__pyx_t_2, 0, 0, 0);
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
    __PYX_ERR(0, 323, __pyx_L1_error)
  }

  /* "cygraph/graph_/dynamic_graph.pyx":302
 *         return self._adjacency_matrix[u][v] is not None
 * 
 *     cpdef double get_edge_weight(self, object v1, object v2) except *:             # <<<<<<<<<<<<<<
 *         """Returns the weight of the edge between vertices v1 and v2.
 * 
 */

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_3);
  __Pyx_XDECREF(__pyx_t_4);
  __Pyx_XDECREF(__pyx_t_6);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.get_edge_weight", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = 0;
  __pyx_L0:;
  __Pyx_XDECREF(__pyx_v_weight);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_15get_edge_weight(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static char __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_14get_edge_weight[] = "Returns the weight of the edge between vertices v1 and v2.\n\n        Parameters\n        ----------\n        v1\n            One of the edge's vertices.\n        v2\n            One of the edge's vertices.\n\n        Returns\n        -------\n        float\n            The weight of the edge between v1 and v2.\n        ";
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_15get_edge_weight(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
  PyObject *__pyx_v_v1 = 0;
  PyObject *__pyx_v_v2 = 0;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("get_edge_weight (wrapper)", 0);
  {
    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s_v1,&__pyx_n_s_v2,0};
    PyObject* values[2] = {0,0};
    if (unlikely(__pyx_kwds)) {
      Py_ssize_t kw_args;
      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
      switch (pos_args) {
        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
        CYTHON_FALLTHROUGH;
        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
        CYTHON_FALLTHROUGH;
        case  0: break;
        default: goto __pyx_L5_argtuple_error;
      }
      kw_args = PyDict_Size(__pyx_kwds);
      switch (pos_args) {
        case  0:
        if (likely((values[0] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_v1)) != 0)) kw_args--;
        else goto __pyx_L5_argtuple_error;
        CYTHON_FALLTHROUGH;
        case  1:
        if (likely((values[1] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_v2)) != 0)) kw_args--;
        else {
          __Pyx_RaiseArgtupleInvalid("get_edge_weight", 1, 2, 2, 1); __PYX_ERR(0, 302, __pyx_L3_error)
        }
      }
      if (unlikely(kw_args > 0)) {
        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "get_edge_weight") < 0)) __PYX_ERR(0, 302, __pyx_L3_error)
      }
    } else if (PyTuple_GET_SIZE(__pyx_args) != 2) {
      goto __pyx_L5_argtuple_error;
    } else {
      values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
      values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
    }
    __pyx_v_v1 = values[0];
    __pyx_v_v2 = values[1];
  }
  goto __pyx_L4_argument_unpacking_done;
  __pyx_L5_argtuple_error:;
  __Pyx_RaiseArgtupleInvalid("get_edge_weight", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 302, __pyx_L3_error)
  __pyx_L3_error:;
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.get_edge_weight", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __Pyx_RefNannyFinishContext();
  return NULL;
  __pyx_L4_argument_unpacking_done:;
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_14get_edge_weight(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self), __pyx_v_v1, __pyx_v_v2);

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_14get_edge_weight(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v1, PyObject *__pyx_v_v2) {
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  double __pyx_t_1;
  PyObject *__pyx_t_2 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("get_edge_weight", 0);
  __Pyx_XDECREF(__pyx_r);
  __pyx_t_1 = __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_get_edge_weight(__pyx_v_self, __pyx_v_v1, __pyx_v_v2, 1); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 302, __pyx_L1_error)
  __pyx_t_2 = PyFloat_FromDouble(__pyx_t_1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 302, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __pyx_r = __pyx_t_2;
  __pyx_t_2 = 0;
  goto __pyx_L0;

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.get_edge_weight", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":325
 *             raise ValueError("edge ({v1}, {v2}) is not in graph.")
 * 
 *     cpdef void add_vertex(self, object v) except *:             # <<<<<<<<<<<<<<
 *         """Adds vertex to the graph.
 * 
 */

static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_17add_vertex(PyObject *__pyx_v_self, PyObject *__pyx_v_v); /*proto*/
static void __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_vertex(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v, int __pyx_skip_dispatch) {
  int __pyx_v_vertex_number;
  int __pyx_v_i;
  PyObject *__pyx_v_new_row = 0;
  CYTHON_UNUSED long __pyx_7genexpr__pyx_v__;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  PyObject *__pyx_t_2 = NULL;
  PyObject *__pyx_t_3 = NULL;
  PyObject *__pyx_t_4 = NULL;
  int __pyx_t_5;
  int __pyx_t_6;
  Py_ssize_t __pyx_t_7;
  int __pyx_t_8;
  long __pyx_t_9;
  long __pyx_t_10;
  long __pyx_t_11;
  Py_ssize_t __pyx_t_12;
  int __pyx_t_13;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("add_vertex", 0);
  /* Check if called by wrapper */
  if (unlikely(__pyx_skip_dispatch)) ;
  /* Check if overridden in Python */
  else if (unlikely((Py_TYPE(((PyObject *)__pyx_v_self))->tp_dictoffset != 0) || (Py_TYPE(((PyObject *)__pyx_v_self))->tp_flags & (Py_TPFLAGS_IS_ABSTRACT | Py_TPFLAGS_HEAPTYPE)))) {
    #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    static PY_UINT64_T __pyx_tp_dict_version = __PYX_DICT_VERSION_INIT, __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
    if (unlikely(!__Pyx_object_dict_version_matches(((PyObject *)__pyx_v_self), __pyx_tp_dict_version, __pyx_obj_dict_version))) {
      PY_UINT64_T __pyx_type_dict_guard = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      #endif
      __pyx_t_1 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_add_vertex); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 325, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_1);
      if (!PyCFunction_Check(__pyx_t_1) || (PyCFunction_GET_FUNCTION(__pyx_t_1) != (PyCFunction)(void*)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_17add_vertex)) {
        __Pyx_INCREF(__pyx_t_1);
        __pyx_t_3 = __pyx_t_1; __pyx_t_4 = NULL;
        if (CYTHON_UNPACK_METHODS && unlikely(PyMethod_Check(__pyx_t_3))) {
          __pyx_t_4 = PyMethod_GET_SELF(__pyx_t_3);
          if (likely(__pyx_t_4)) {
            PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_3);
            __Pyx_INCREF(__pyx_t_4);
            __Pyx_INCREF(function);
            __Pyx_DECREF_SET(__pyx_t_3, function);
          }
        }
        __pyx_t_2 = (__pyx_t_4) ? __Pyx_PyObject_Call2Args(__pyx_t_3, __pyx_t_4, __pyx_v_v) : __Pyx_PyObject_CallOneArg(__pyx_t_3, __pyx_v_v);
        __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
        if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 325, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_2);
        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
        __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
        goto __pyx_L0;
      }
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
      __pyx_tp_dict_version = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      __pyx_obj_dict_version = __Pyx_get_object_dict_version(((PyObject *)__pyx_v_self));
      if (unlikely(__pyx_type_dict_guard != __pyx_tp_dict_version)) {
        __pyx_tp_dict_version = __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
      }
      #endif
      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    }
    #endif
  }

  /* "cygraph/graph_/dynamic_graph.pyx":336
 *         cdef list new_row
 * 
 *         self._vertex_attributes[v] = {}             # <<<<<<<<<<<<<<
 * 
 *         if v in self.vertices:
 */
  __pyx_t_1 = __Pyx_PyDict_NewPresized(0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 336, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  if (unlikely(__pyx_v_self->__pyx_base._vertex_attributes == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
    __PYX_ERR(0, 336, __pyx_L1_error)
  }
  if (unlikely(PyDict_SetItem(__pyx_v_self->__pyx_base._vertex_attributes, __pyx_v_v, __pyx_t_1) < 0)) __PYX_ERR(0, 336, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":338
 *         self._vertex_attributes[v] = {}
 * 
 *         if v in self.vertices:             # <<<<<<<<<<<<<<
 *             raise ValueError(f"{v} is already in graph")
 *         # Map vertex name to number.
 */
  __pyx_t_5 = (__Pyx_PySequence_ContainsTF(__pyx_v_v, __pyx_v_self->__pyx_base.vertices, Py_EQ)); if (unlikely(__pyx_t_5 < 0)) __PYX_ERR(0, 338, __pyx_L1_error)
  __pyx_t_6 = (__pyx_t_5 != 0);
  if (unlikely(__pyx_t_6)) {

    /* "cygraph/graph_/dynamic_graph.pyx":339
 * 
 *         if v in self.vertices:
 *             raise ValueError(f"{v} is already in graph")             # <<<<<<<<<<<<<<
 *         # Map vertex name to number.
 *         vertex_number = len(self.vertices)
 */
    __pyx_t_1 = __Pyx_PyObject_FormatSimple(__pyx_v_v, __pyx_empty_unicode); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 339, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    __pyx_t_2 = __Pyx_PyUnicode_Concat(__pyx_t_1, __pyx_kp_u_is_already_in_graph); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 339, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
    __pyx_t_1 = __Pyx_PyObject_CallOneArg(__pyx_builtin_ValueError, __pyx_t_2); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 339, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
    __Pyx_Raise(__pyx_t_1, 0, 0, 0);
    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
    __PYX_ERR(0, 339, __pyx_L1_error)

    /* "cygraph/graph_/dynamic_graph.pyx":338
 *         self._vertex_attributes[v] = {}
 * 
 *         if v in self.vertices:             # <<<<<<<<<<<<<<
 *             raise ValueError(f"{v} is already in graph")
 *         # Map vertex name to number.
 */
  }

  /* "cygraph/graph_/dynamic_graph.pyx":341
 *             raise ValueError(f"{v} is already in graph")
 *         # Map vertex name to number.
 *         vertex_number = len(self.vertices)             # <<<<<<<<<<<<<<
 *         self.vertices.append(v)
 * 
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.vertices;
  __Pyx_INCREF(__pyx_t_1);
  if (unlikely(__pyx_t_1 == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
    __PYX_ERR(0, 341, __pyx_L1_error)
  }
  __pyx_t_7 = PyList_GET_SIZE(__pyx_t_1); if (unlikely(__pyx_t_7 == ((Py_ssize_t)-1))) __PYX_ERR(0, 341, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __pyx_v_vertex_number = __pyx_t_7;

  /* "cygraph/graph_/dynamic_graph.pyx":342
 *         # Map vertex name to number.
 *         vertex_number = len(self.vertices)
 *         self.vertices.append(v)             # <<<<<<<<<<<<<<
 * 
 *         # Add new row.
 */
  if (unlikely(__pyx_v_self->__pyx_base.vertices == Py_None)) {
    PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%.30s'", "append");
    __PYX_ERR(0, 342, __pyx_L1_error)
  }
  __pyx_t_8 = __Pyx_PyList_Append(__pyx_v_self->__pyx_base.vertices, __pyx_v_v); if (unlikely(__pyx_t_8 == ((int)-1))) __PYX_ERR(0, 342, __pyx_L1_error)

  /* "cygraph/graph_/dynamic_graph.pyx":345
 * 
 *         # Add new row.
 *         new_row = [None for _ in range(vertex_number + 1)]             # <<<<<<<<<<<<<<
 *         self._adjacency_matrix.append(new_row)
 * 
 */
  { /* enter inner scope */
    __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 345, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    __pyx_t_9 = (__pyx_v_vertex_number + 1);
    __pyx_t_10 = __pyx_t_9;
    for (__pyx_t_11 = 0; __pyx_t_11 < __pyx_t_10; __pyx_t_11+=1) {
      __pyx_7genexpr__pyx_v__ = __pyx_t_11;
      if (unlikely(__Pyx_ListComp_Append(__pyx_t_1, (PyObject*)Py_None))) __PYX_ERR(0, 345, __pyx_L1_error)
    }
  } /* exit inner scope */
  __pyx_v_new_row = ((PyObject*)__pyx_t_1);
  __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":346
 *         # Add new row.
 *         new_row = [None for _ in range(vertex_number + 1)]
 *         self._adjacency_matrix.append(new_row)             # <<<<<<<<<<<<<<
 * 
 *         # Add new column.
 */
  if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
    PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%.30s'", "append");
    __PYX_ERR(0, 346, __pyx_L1_error)
  }
  __pyx_t_8 = __Pyx_PyList_Append(__pyx_v_self->_adjacency_matrix, __pyx_v_new_row); if (unlikely(__pyx_t_8 == ((int)-1))) __PYX_ERR(0, 346, __pyx_L1_error)

  /* "cygraph/graph_/dynamic_graph.pyx":349
 * 
 *         # Add new column.
 *         for i in range(len(self._adjacency_matrix) - 1):             # <<<<<<<<<<<<<<
 *             self._adjacency_matrix[i].append(None)
 * 
 */
  __pyx_t_1 = __pyx_v_self->_adjacency_matrix;
  __Pyx_INCREF(__pyx_t_1);
  if (unlikely(__pyx_t_1 == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
    __PYX_ERR(0, 349, __pyx_L1_error)
  }
  __pyx_t_7 = PyList_GET_SIZE(__pyx_t_1); if (unlikely(__pyx_t_7 == ((Py_ssize_t)-1))) __PYX_ERR(0, 349, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __pyx_t_12 = (__pyx_t_7 - 1);
  __pyx_t_7 = __pyx_t_12;
  for (__pyx_t_13 = 0; __pyx_t_13 < __pyx_t_7; __pyx_t_13+=1) {
    __pyx_v_i = __pyx_t_13;

    /* "cygraph/graph_/dynamic_graph.pyx":350
 *         # Add new column.
 *         for i in range(len(self._adjacency_matrix) - 1):
 *             self._adjacency_matrix[i].append(None)             # <<<<<<<<<<<<<<
 * 
 *     cpdef void add_vertices(self, set vertices) except *:
 */
    if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
      __PYX_ERR(0, 350, __pyx_L1_error)
    }
    __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_i, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 350, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    __pyx_t_8 = __Pyx_PyObject_Append(__pyx_t_1, Py_None); if (unlikely(__pyx_t_8 == ((int)-1))) __PYX_ERR(0, 350, __pyx_L1_error)
    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  }

  /* "cygraph/graph_/dynamic_graph.pyx":325
 *             raise ValueError("edge ({v1}, {v2}) is not in graph.")
 * 
 *     cpdef void add_vertex(self, object v) except *:             # <<<<<<<<<<<<<<
 *         """Adds vertex to the graph.
 * 
 */

  /* function exit code */
  goto __pyx_L0;
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_3);
  __Pyx_XDECREF(__pyx_t_4);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.add_vertex", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_L0:;
  __Pyx_XDECREF(__pyx_v_new_row);
  __Pyx_RefNannyFinishContext();
}

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_17add_vertex(PyObject *__pyx_v_self, PyObject *__pyx_v_v); /*proto*/
static char __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_16add_vertex[] = "Adds vertex to the graph.\n\n        Parameters\n        ----------\n        v\n            A vertex of any hashable type.\n        ";
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_17add_vertex(PyObject *__pyx_v_self, PyObject *__pyx_v_v) {
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("add_vertex (wrapper)", 0);
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_16add_vertex(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self), ((PyObject *)__pyx_v_v));

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_16add_vertex(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v) {
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("add_vertex", 0);
  __Pyx_XDECREF(__pyx_r);
  __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_vertex(__pyx_v_self, __pyx_v_v, 1); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 325, __pyx_L1_error)
  __pyx_t_1 = __Pyx_void_to_None(NULL); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 325, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_r = __pyx_t_1;
  __pyx_t_1 = 0;
  goto __pyx_L0;

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.add_vertex", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":352
 *             self._adjacency_matrix[i].append(None)
 * 
 *     cpdef void add_vertices(self, set vertices) except *:             # <<<<<<<<<<<<<<
 *         """Adds a set of vertices to graph.
 * 
 */

static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_19add_vertices(PyObject *__pyx_v_self, PyObject *__pyx_v_vertices); /*proto*/
static void __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_vertices(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_vertices, int __pyx_skip_dispatch) {
  int __pyx_v_i;
  int __pyx_v_starting_n_vertices;
  int __pyx_v_new_n_vertices;
  int __pyx_v_n_new_vertices;
  PyObject *__pyx_v_v = 0;
  PyObject *__pyx_v_new_row = 0;
  CYTHON_UNUSED int __pyx_v__;
  CYTHON_UNUSED int __pyx_8genexpr1__pyx_v__;
  CYTHON_UNUSED int __pyx_8genexpr2__pyx_v__;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  PyObject *__pyx_t_2 = NULL;
  PyObject *__pyx_t_3 = NULL;
  PyObject *__pyx_t_4 = NULL;
  Py_ssize_t __pyx_t_5;
  Py_ssize_t __pyx_t_6;
  int __pyx_t_7;
  int __pyx_t_8;
  int __pyx_t_9;
  int __pyx_t_10;
  int __pyx_t_11;
  int __pyx_t_12;
  int __pyx_t_13;
  int __pyx_t_14;
  int __pyx_t_15;
  PyObject *__pyx_t_16 = NULL;
  int __pyx_t_17;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("add_vertices", 0);
  /* Check if called by wrapper */
  if (unlikely(__pyx_skip_dispatch)) ;
  /* Check if overridden in Python */
  else if (unlikely((Py_TYPE(((PyObject *)__pyx_v_self))->tp_dictoffset != 0) || (Py_TYPE(((PyObject *)__pyx_v_self))->tp_flags & (Py_TPFLAGS_IS_ABSTRACT | Py_TPFLAGS_HEAPTYPE)))) {
    #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    static PY_UINT64_T __pyx_tp_dict_version = __PYX_DICT_VERSION_INIT, __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
    if (unlikely(!__Pyx_object_dict_version_matches(((PyObject *)__pyx_v_self), __pyx_tp_dict_version, __pyx_obj_dict_version))) {
      PY_UINT64_T __pyx_type_dict_guard = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      #endif
      __pyx_t_1 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_add_vertices); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 352, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_1);
      if (!PyCFunction_Check(__pyx_t_1) || (PyCFunction_GET_FUNCTION(__pyx_t_1) != (PyCFunction)(void*)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_19add_vertices)) {
        __Pyx_INCREF(__pyx_t_1);
        __pyx_t_3 = __pyx_t_1; __pyx_t_4 = NULL;
        if (CYTHON_UNPACK_METHODS && unlikely(PyMethod_Check(__pyx_t_3))) {
          __pyx_t_4 = PyMethod_GET_SELF(__pyx_t_3);
          if (likely(__pyx_t_4)) {
            PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_3);
            __Pyx_INCREF(__pyx_t_4);
            __Pyx_INCREF(function);
            __Pyx_DECREF_SET(__pyx_t_3, function);
          }
        }
        __pyx_t_2 = (__pyx_t_4) ? __Pyx_PyObject_Call2Args(__pyx_t_3, __pyx_t_4, __pyx_v_vertices) : __Pyx_PyObject_CallOneArg(__pyx_t_3, __pyx_v_vertices);
        __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
        if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 352, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_2);
        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
        __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
        goto __pyx_L0;
      }
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
      __pyx_tp_dict_version = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      __pyx_obj_dict_version = __Pyx_get_object_dict_version(((PyObject *)__pyx_v_self));
      if (unlikely(__pyx_type_dict_guard != __pyx_tp_dict_version)) {
        __pyx_tp_dict_version = __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
      }
      #endif
      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    }
    #endif
  }

  /* "cygraph/graph_/dynamic_graph.pyx":364
 *         cdef list new_row
 * 
 *         starting_n_vertices = len(self.vertices)             # <<<<<<<<<<<<<<
 *         n_new_vertices = len(vertices)
 * 
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.vertices;
  __Pyx_INCREF(__pyx_t_1);
  if (unlikely(__pyx_t_1 == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
    __PYX_ERR(0, 364, __pyx_L1_error)
  }
  __pyx_t_5 = PyList_GET_SIZE(__pyx_t_1); if (unlikely(__pyx_t_5 == ((Py_ssize_t)-1))) __PYX_ERR(0, 364, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __pyx_v_starting_n_vertices = __pyx_t_5;

  /* "cygraph/graph_/dynamic_graph.pyx":365
 * 
 *         starting_n_vertices = len(self.vertices)
 *         n_new_vertices = len(vertices)             # <<<<<<<<<<<<<<
 * 
 *         for v in vertices:
 */
  if (unlikely(__pyx_v_vertices == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
    __PYX_ERR(0, 365, __pyx_L1_error)
  }
  __pyx_t_5 = PySet_GET_SIZE(__pyx_v_vertices); if (unlikely(__pyx_t_5 == ((Py_ssize_t)-1))) __PYX_ERR(0, 365, __pyx_L1_error)
  __pyx_v_n_new_vertices = __pyx_t_5;

  /* "cygraph/graph_/dynamic_graph.pyx":367
 *         n_new_vertices = len(vertices)
 * 
 *         for v in vertices:             # <<<<<<<<<<<<<<
 *             if v in self.vertices:
 *                 raise ValueError(f"{v} is already in graph.")
 */
  __pyx_t_5 = 0;
  __pyx_t_2 = __Pyx_set_iterator(__pyx_v_vertices, 1, (&__pyx_t_6), (&__pyx_t_7)); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 367, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_1);
  __pyx_t_1 = __pyx_t_2;
  __pyx_t_2 = 0;
  while (1) {
    __pyx_t_8 = __Pyx_set_iter_next(__pyx_t_1, __pyx_t_6, &__pyx_t_5, &__pyx_t_2, __pyx_t_7);
    if (unlikely(__pyx_t_8 == 0)) break;
    if (unlikely(__pyx_t_8 == -1)) __PYX_ERR(0, 367, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    __Pyx_XDECREF_SET(__pyx_v_v, __pyx_t_2);
    __pyx_t_2 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":368
 * 
 *         for v in vertices:
 *             if v in self.vertices:             # <<<<<<<<<<<<<<
 *                 raise ValueError(f"{v} is already in graph.")
 * 
 */
    __pyx_t_9 = (__Pyx_PySequence_ContainsTF(__pyx_v_v, __pyx_v_self->__pyx_base.vertices, Py_EQ)); if (unlikely(__pyx_t_9 < 0)) __PYX_ERR(0, 368, __pyx_L1_error)
    __pyx_t_10 = (__pyx_t_9 != 0);
    if (unlikely(__pyx_t_10)) {

      /* "cygraph/graph_/dynamic_graph.pyx":369
 *         for v in vertices:
 *             if v in self.vertices:
 *                 raise ValueError(f"{v} is already in graph.")             # <<<<<<<<<<<<<<
 * 
 *         for v in vertices:
 */
      __pyx_t_2 = __Pyx_PyObject_FormatSimple(__pyx_v_v, __pyx_empty_unicode); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 369, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_2);
      __pyx_t_3 = __Pyx_PyUnicode_Concat(__pyx_t_2, __pyx_kp_u_is_already_in_graph_2); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 369, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_3);
      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
      __pyx_t_2 = __Pyx_PyObject_CallOneArg(__pyx_builtin_ValueError, __pyx_t_3); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 369, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_2);
      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
      __Pyx_Raise(__pyx_t_2, 0, 0, 0);
      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
      __PYX_ERR(0, 369, __pyx_L1_error)

      /* "cygraph/graph_/dynamic_graph.pyx":368
 * 
 *         for v in vertices:
 *             if v in self.vertices:             # <<<<<<<<<<<<<<
 *                 raise ValueError(f"{v} is already in graph.")
 * 
 */
    }
  }
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":371
 *                 raise ValueError(f"{v} is already in graph.")
 * 
 *         for v in vertices:             # <<<<<<<<<<<<<<
 *             self._vertex_attributes[v] = {}
 *             self.vertices.append(v)
 */
  __pyx_t_6 = 0;
  __pyx_t_2 = __Pyx_set_iterator(__pyx_v_vertices, 1, (&__pyx_t_5), (&__pyx_t_7)); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 371, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_1);
  __pyx_t_1 = __pyx_t_2;
  __pyx_t_2 = 0;
  while (1) {
    __pyx_t_8 = __Pyx_set_iter_next(__pyx_t_1, __pyx_t_5, &__pyx_t_6, &__pyx_t_2, __pyx_t_7);
    if (unlikely(__pyx_t_8 == 0)) break;
    if (unlikely(__pyx_t_8 == -1)) __PYX_ERR(0, 371, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    __Pyx_XDECREF_SET(__pyx_v_v, __pyx_t_2);
    __pyx_t_2 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":372
 * 
 *         for v in vertices:
 *             self._vertex_attributes[v] = {}             # <<<<<<<<<<<<<<
 *             self.vertices.append(v)
 * 
 */
    __pyx_t_2 = __Pyx_PyDict_NewPresized(0); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 372, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    if (unlikely(__pyx_v_self->__pyx_base._vertex_attributes == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
      __PYX_ERR(0, 372, __pyx_L1_error)
    }
    if (unlikely(PyDict_SetItem(__pyx_v_self->__pyx_base._vertex_attributes, __pyx_v_v, __pyx_t_2) < 0)) __PYX_ERR(0, 372, __pyx_L1_error)
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":373
 *         for v in vertices:
 *             self._vertex_attributes[v] = {}
 *             self.vertices.append(v)             # <<<<<<<<<<<<<<
 * 
 *         new_n_vertices = len(self.vertices)
 */
    if (unlikely(__pyx_v_self->__pyx_base.vertices == Py_None)) {
      PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%.30s'", "append");
      __PYX_ERR(0, 373, __pyx_L1_error)
    }
    __pyx_t_11 = __Pyx_PyList_Append(__pyx_v_self->__pyx_base.vertices, __pyx_v_v); if (unlikely(__pyx_t_11 == ((int)-1))) __PYX_ERR(0, 373, __pyx_L1_error)
  }
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":375
 *             self.vertices.append(v)
 * 
 *         new_n_vertices = len(self.vertices)             # <<<<<<<<<<<<<<
 * 
 *         # Add new rows.
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.vertices;
  __Pyx_INCREF(__pyx_t_1);
  if (unlikely(__pyx_t_1 == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
    __PYX_ERR(0, 375, __pyx_L1_error)
  }
  __pyx_t_5 = PyList_GET_SIZE(__pyx_t_1); if (unlikely(__pyx_t_5 == ((Py_ssize_t)-1))) __PYX_ERR(0, 375, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __pyx_v_new_n_vertices = __pyx_t_5;

  /* "cygraph/graph_/dynamic_graph.pyx":378
 * 
 *         # Add new rows.
 *         for _ in range(new_n_vertices):             # <<<<<<<<<<<<<<
 *             new_row = [None for _ in range(new_n_vertices)]
 *             self._adjacency_matrix.append(new_row)
 */
  __pyx_t_7 = __pyx_v_new_n_vertices;
  __pyx_t_8 = __pyx_t_7;
  for (__pyx_t_12 = 0; __pyx_t_12 < __pyx_t_8; __pyx_t_12+=1) {
    __pyx_v__ = __pyx_t_12;

    /* "cygraph/graph_/dynamic_graph.pyx":379
 *         # Add new rows.
 *         for _ in range(new_n_vertices):
 *             new_row = [None for _ in range(new_n_vertices)]             # <<<<<<<<<<<<<<
 *             self._adjacency_matrix.append(new_row)
 * 
 */
    { /* enter inner scope */
      __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 379, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_1);
      __pyx_t_13 = __pyx_v_new_n_vertices;
      __pyx_t_14 = __pyx_t_13;
      for (__pyx_t_15 = 0; __pyx_t_15 < __pyx_t_14; __pyx_t_15+=1) {
        __pyx_8genexpr1__pyx_v__ = __pyx_t_15;
        if (unlikely(__Pyx_ListComp_Append(__pyx_t_1, (PyObject*)Py_None))) __PYX_ERR(0, 379, __pyx_L1_error)
      }
    } /* exit inner scope */
    __Pyx_XDECREF_SET(__pyx_v_new_row, ((PyObject*)__pyx_t_1));
    __pyx_t_1 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":380
 *         for _ in range(new_n_vertices):
 *             new_row = [None for _ in range(new_n_vertices)]
 *             self._adjacency_matrix.append(new_row)             # <<<<<<<<<<<<<<
 * 
 *         # Add new columns.
 */
    if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
      PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%.30s'", "append");
      __PYX_ERR(0, 380, __pyx_L1_error)
    }
    __pyx_t_11 = __Pyx_PyList_Append(__pyx_v_self->_adjacency_matrix, __pyx_v_new_row); if (unlikely(__pyx_t_11 == ((int)-1))) __PYX_ERR(0, 380, __pyx_L1_error)
  }

  /* "cygraph/graph_/dynamic_graph.pyx":383
 * 
 *         # Add new columns.
 *         for i in range(starting_n_vertices):             # <<<<<<<<<<<<<<
 *             self._adjacency_matrix[i] += [None for _ in range(n_new_vertices)]
 * 
 */
  __pyx_t_7 = __pyx_v_starting_n_vertices;
  __pyx_t_8 = __pyx_t_7;
  for (__pyx_t_12 = 0; __pyx_t_12 < __pyx_t_8; __pyx_t_12+=1) {
    __pyx_v_i = __pyx_t_12;

    /* "cygraph/graph_/dynamic_graph.pyx":384
 *         # Add new columns.
 *         for i in range(starting_n_vertices):
 *             self._adjacency_matrix[i] += [None for _ in range(n_new_vertices)]             # <<<<<<<<<<<<<<
 * 
 *     cpdef void remove_vertex(self, object v) except *:
 */
    if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
      __PYX_ERR(0, 384, __pyx_L1_error)
    }
    __Pyx_INCREF(__pyx_v_self->_adjacency_matrix);
    __pyx_t_16 = __pyx_v_self->_adjacency_matrix;
    __pyx_t_13 = __pyx_v_i;
    if (unlikely(__pyx_t_16 == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
      __PYX_ERR(0, 384, __pyx_L1_error)
    }
    __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_t_16, __pyx_t_13, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 384, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    { /* enter inner scope */
      __pyx_t_2 = PyList_New(0); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 384, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_2);
      __pyx_t_14 = __pyx_v_n_new_vertices;
      __pyx_t_15 = __pyx_t_14;
      for (__pyx_t_17 = 0; __pyx_t_17 < __pyx_t_15; __pyx_t_17+=1) {
        __pyx_8genexpr2__pyx_v__ = __pyx_t_17;
        if (unlikely(__Pyx_ListComp_Append(__pyx_t_2, (PyObject*)Py_None))) __PYX_ERR(0, 384, __pyx_L1_error)
      }
    } /* exit inner scope */
    __pyx_t_3 = PyNumber_InPlaceAdd(__pyx_t_1, __pyx_t_2); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 384, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_3);
    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
    if (unlikely(__pyx_t_16 == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
      __PYX_ERR(0, 384, __pyx_L1_error)
    }
    if (unlikely(__Pyx_SetItemInt(__pyx_t_16, __pyx_t_13, __pyx_t_3, int, 1, __Pyx_PyInt_From_int, 1, 1, 1) < 0)) __PYX_ERR(0, 384, __pyx_L1_error)
    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
    __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
  }

  /* "cygraph/graph_/dynamic_graph.pyx":352
 *             self._adjacency_matrix[i].append(None)
 * 
 *     cpdef void add_vertices(self, set vertices) except *:             # <<<<<<<<<<<<<<
 *         """Adds a set of vertices to graph.
 * 
 */

  /* function exit code */
  goto __pyx_L0;
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_3);
  __Pyx_XDECREF(__pyx_t_4);
  __Pyx_XDECREF(__pyx_t_16);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.add_vertices", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_L0:;
  __Pyx_XDECREF(__pyx_v_v);
  __Pyx_XDECREF(__pyx_v_new_row);
  __Pyx_RefNannyFinishContext();
}

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_19add_vertices(PyObject *__pyx_v_self, PyObject *__pyx_v_vertices); /*proto*/
static char __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_18add_vertices[] = "Adds a set of vertices to graph.\n\n        Parameters\n        ----------\n        vertices: set\n            A set of vertices, which can be of any hashable type.\n        ";
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_19add_vertices(PyObject *__pyx_v_self, PyObject *__pyx_v_vertices) {
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("add_vertices (wrapper)", 0);
  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_vertices), (&PySet_Type), 1, "vertices", 1))) __PYX_ERR(0, 352, __pyx_L1_error)
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_18add_vertices(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self), ((PyObject*)__pyx_v_vertices));

  /* function exit code */
  goto __pyx_L0;
  __pyx_L1_error:;
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_18add_vertices(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_vertices) {
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("add_vertices", 0);
  __Pyx_XDECREF(__pyx_r);
  __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_vertices(__pyx_v_self, __pyx_v_vertices, 1); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 352, __pyx_L1_error)
  __pyx_t_1 = __Pyx_void_to_None(NULL); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 352, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_r = __pyx_t_1;
  __pyx_t_1 = 0;
  goto __pyx_L0;

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.add_vertices", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":386
 *             self._adjacency_matrix[i] += [None for _ in range(n_new_vertices)]
 * 
 *     cpdef void remove_vertex(self, object v) except *:             # <<<<<<<<<<<<<<
 *         """Removes a vertex from this graph.
 * 
 */

static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_21remove_vertex(PyObject *__pyx_v_self, PyObject *__pyx_v_v); /*proto*/
static void __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_remove_vertex(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v, int __pyx_skip_dispatch) {
  int __pyx_v_u;
  PyObject *__pyx_v_row = 0;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  PyObject *__pyx_t_2 = NULL;
  PyObject *__pyx_t_3 = NULL;
  PyObject *__pyx_t_4 = NULL;
  int __pyx_t_5;
  Py_ssize_t __pyx_t_6;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("remove_vertex", 0);
  /* Check if called by wrapper */
  if (unlikely(__pyx_skip_dispatch)) ;
  /* Check if overridden in Python */
  else if (unlikely((Py_TYPE(((PyObject *)__pyx_v_self))->tp_dictoffset != 0) || (Py_TYPE(((PyObject *)__pyx_v_self))->tp_flags & (Py_TPFLAGS_IS_ABSTRACT | Py_TPFLAGS_HEAPTYPE)))) {
    #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    static PY_UINT64_T __pyx_tp_dict_version = __PYX_DICT_VERSION_INIT, __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
    if (unlikely(!__Pyx_object_dict_version_matches(((PyObject *)__pyx_v_self), __pyx_tp_dict_version, __pyx_obj_dict_version))) {
      PY_UINT64_T __pyx_type_dict_guard = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      #endif
      __pyx_t_1 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_remove_vertex); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 386, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_1);
      if (!PyCFunction_Check(__pyx_t_1) || (PyCFunction_GET_FUNCTION(__pyx_t_1) != (PyCFunction)(void*)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_21remove_vertex)) {
        __Pyx_INCREF(__pyx_t_1);
        __pyx_t_3 = __pyx_t_1; __pyx_t_4 = NULL;
        if (CYTHON_UNPACK_METHODS && unlikely(PyMethod_Check(__pyx_t_3))) {
          __pyx_t_4 = PyMethod_GET_SELF(__pyx_t_3);
          if (likely(__pyx_t_4)) {
            PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_3);
            __Pyx_INCREF(__pyx_t_4);
            __Pyx_INCREF(function);
            __Pyx_DECREF_SET(__pyx_t_3, function);
          }
        }
        __pyx_t_2 = (__pyx_t_4) ? __Pyx_PyObject_Call2Args(__pyx_t_3, __pyx_t_4, __pyx_v_v) : __Pyx_PyObject_CallOneArg(__pyx_t_3, __pyx_v_v);
        __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
        if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 386, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_2);
        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
        __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
        goto __pyx_L0;
      }
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
      __pyx_tp_dict_version = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      __pyx_obj_dict_version = __Pyx_get_object_dict_version(((PyObject *)__pyx_v_self));
      if (unlikely(__pyx_type_dict_guard != __pyx_tp_dict_version)) {
        __pyx_tp_dict_version = __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
      }
      #endif
      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    }
    #endif
  }

  /* "cygraph/graph_/dynamic_graph.pyx":394
 *             A vertex in this graph.
 *         """
 *         cdef int u = self._get_vertex_int(v)             # <<<<<<<<<<<<<<
 * 
 *         self.vertices.remove(v)
 */
  __pyx_t_5 = ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base._get_vertex_int(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_self), __pyx_v_v); if (unlikely(__pyx_t_5 == ((int)-1))) __PYX_ERR(0, 394, __pyx_L1_error)
  __pyx_v_u = __pyx_t_5;

  /* "cygraph/graph_/dynamic_graph.pyx":396
 *         cdef int u = self._get_vertex_int(v)
 * 
 *         self.vertices.remove(v)             # <<<<<<<<<<<<<<
 * 
 *         # Delete row and column from adjacency matrix.
 */
  __pyx_t_2 = __Pyx_PyObject_GetAttrStr(__pyx_v_self->__pyx_base.vertices, __pyx_n_s_remove); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 396, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __pyx_t_3 = NULL;
  if (CYTHON_UNPACK_METHODS && likely(PyMethod_Check(__pyx_t_2))) {
    __pyx_t_3 = PyMethod_GET_SELF(__pyx_t_2);
    if (likely(__pyx_t_3)) {
      PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_2);
      __Pyx_INCREF(__pyx_t_3);
      __Pyx_INCREF(function);
      __Pyx_DECREF_SET(__pyx_t_2, function);
    }
  }
  __pyx_t_1 = (__pyx_t_3) ? __Pyx_PyObject_Call2Args(__pyx_t_2, __pyx_t_3, __pyx_v_v) : __Pyx_PyObject_CallOneArg(__pyx_t_2, __pyx_v_v);
  __Pyx_XDECREF(__pyx_t_3); __pyx_t_3 = 0;
  if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 396, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":399
 * 
 *         # Delete row and column from adjacency matrix.
 *         self._adjacency_matrix.pop(u)             # <<<<<<<<<<<<<<
 *         cdef list row
 *         for row in self._adjacency_matrix:
 */
  if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
    PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%.30s'", "pop");
    __PYX_ERR(0, 399, __pyx_L1_error)
  }
  __pyx_t_1 = __Pyx_PyList_PopIndex(__pyx_v_self->_adjacency_matrix, Py_None, __pyx_v_u, 1, int, __Pyx_PyInt_From_int); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 399, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":401
 *         self._adjacency_matrix.pop(u)
 *         cdef list row
 *         for row in self._adjacency_matrix:             # <<<<<<<<<<<<<<
 *             row.pop(u)
 * 
 */
  if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable");
    __PYX_ERR(0, 401, __pyx_L1_error)
  }
  __pyx_t_1 = __pyx_v_self->_adjacency_matrix; __Pyx_INCREF(__pyx_t_1); __pyx_t_6 = 0;
  for (;;) {
    if (__pyx_t_6 >= PyList_GET_SIZE(__pyx_t_1)) break;
    #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
    __pyx_t_2 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_6); __Pyx_INCREF(__pyx_t_2); __pyx_t_6++; if (unlikely(0 < 0)) __PYX_ERR(0, 401, __pyx_L1_error)
    #else
    __pyx_t_2 = PySequence_ITEM(__pyx_t_1, __pyx_t_6); __pyx_t_6++; if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 401, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    #endif
    if (!(likely(PyList_CheckExact(__pyx_t_2))||((__pyx_t_2) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "list", Py_TYPE(__pyx_t_2)->tp_name), 0))) __PYX_ERR(0, 401, __pyx_L1_error)
    __Pyx_XDECREF_SET(__pyx_v_row, ((PyObject*)__pyx_t_2));
    __pyx_t_2 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":402
 *         cdef list row
 *         for row in self._adjacency_matrix:
 *             row.pop(u)             # <<<<<<<<<<<<<<
 * 
 *     cpdef set get_children(self, object v):
 */
    if (unlikely(__pyx_v_row == Py_None)) {
      PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%.30s'", "pop");
      __PYX_ERR(0, 402, __pyx_L1_error)
    }
    __pyx_t_2 = __Pyx_PyList_PopIndex(__pyx_v_row, Py_None, __pyx_v_u, 1, int, __Pyx_PyInt_From_int); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 402, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":401
 *         self._adjacency_matrix.pop(u)
 *         cdef list row
 *         for row in self._adjacency_matrix:             # <<<<<<<<<<<<<<
 *             row.pop(u)
 * 
 */
  }
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":386
 *             self._adjacency_matrix[i] += [None for _ in range(n_new_vertices)]
 * 
 *     cpdef void remove_vertex(self, object v) except *:             # <<<<<<<<<<<<<<
 *         """Removes a vertex from this graph.
 * 
 */

  /* function exit code */
  goto __pyx_L0;
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_3);
  __Pyx_XDECREF(__pyx_t_4);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.remove_vertex", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_L0:;
  __Pyx_XDECREF(__pyx_v_row);
  __Pyx_RefNannyFinishContext();
}

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_21remove_vertex(PyObject *__pyx_v_self, PyObject *__pyx_v_v); /*proto*/
static char __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_20remove_vertex[] = "Removes a vertex from this graph.\n\n        Parameters\n        ----------\n        v\n            A vertex in this graph.\n        ";
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_21remove_vertex(PyObject *__pyx_v_self, PyObject *__pyx_v_v) {
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("remove_vertex (wrapper)", 0);
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_20remove_vertex(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self), ((PyObject *)__pyx_v_v));

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_20remove_vertex(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v) {
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("remove_vertex", 0);
  __Pyx_XDECREF(__pyx_r);
  __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_remove_vertex(__pyx_v_self, __pyx_v_v, 1); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 386, __pyx_L1_error)
  __pyx_t_1 = __Pyx_void_to_None(NULL); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 386, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_r = __pyx_t_1;
  __pyx_t_1 = 0;
  goto __pyx_L0;

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.remove_vertex", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":404
 *             row.pop(u)
 * 
 *     cpdef set get_children(self, object v):             # <<<<<<<<<<<<<<
 *         """Returns the names of all the child vertices of a given
 *         vertex. Equivalent to neighbors if graph is undirected.
 */

static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_23get_children(PyObject *__pyx_v_self, PyObject *__pyx_v_v); /*proto*/
static PyObject *__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_get_children(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v, int __pyx_skip_dispatch) {
  PyObject *__pyx_v_children = 0;
  int __pyx_v_u;
  int __pyx_v_w;
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  PyObject *__pyx_t_2 = NULL;
  PyObject *__pyx_t_3 = NULL;
  PyObject *__pyx_t_4 = NULL;
  int __pyx_t_5;
  Py_ssize_t __pyx_t_6;
  Py_ssize_t __pyx_t_7;
  int __pyx_t_8;
  int __pyx_t_9;
  int __pyx_t_10;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("get_children", 0);
  /* Check if called by wrapper */
  if (unlikely(__pyx_skip_dispatch)) ;
  /* Check if overridden in Python */
  else if (unlikely((Py_TYPE(((PyObject *)__pyx_v_self))->tp_dictoffset != 0) || (Py_TYPE(((PyObject *)__pyx_v_self))->tp_flags & (Py_TPFLAGS_IS_ABSTRACT | Py_TPFLAGS_HEAPTYPE)))) {
    #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    static PY_UINT64_T __pyx_tp_dict_version = __PYX_DICT_VERSION_INIT, __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
    if (unlikely(!__Pyx_object_dict_version_matches(((PyObject *)__pyx_v_self), __pyx_tp_dict_version, __pyx_obj_dict_version))) {
      PY_UINT64_T __pyx_type_dict_guard = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      #endif
      __pyx_t_1 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_get_children); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 404, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_1);
      if (!PyCFunction_Check(__pyx_t_1) || (PyCFunction_GET_FUNCTION(__pyx_t_1) != (PyCFunction)(void*)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_23get_children)) {
        __Pyx_XDECREF(__pyx_r);
        __Pyx_INCREF(__pyx_t_1);
        __pyx_t_3 = __pyx_t_1; __pyx_t_4 = NULL;
        if (CYTHON_UNPACK_METHODS && unlikely(PyMethod_Check(__pyx_t_3))) {
          __pyx_t_4 = PyMethod_GET_SELF(__pyx_t_3);
          if (likely(__pyx_t_4)) {
            PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_3);
            __Pyx_INCREF(__pyx_t_4);
            __Pyx_INCREF(function);
            __Pyx_DECREF_SET(__pyx_t_3, function);
          }
        }
        __pyx_t_2 = (__pyx_t_4) ? __Pyx_PyObject_Call2Args(__pyx_t_3, __pyx_t_4, __pyx_v_v) : __Pyx_PyObject_CallOneArg(__pyx_t_3, __pyx_v_v);
        __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
        if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 404, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_2);
        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
        if (!(likely(PySet_CheckExact(__pyx_t_2))||((__pyx_t_2) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "set", Py_TYPE(__pyx_t_2)->tp_name), 0))) __PYX_ERR(0, 404, __pyx_L1_error)
        __pyx_r = ((PyObject*)__pyx_t_2);
        __pyx_t_2 = 0;
        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
        goto __pyx_L0;
      }
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
      __pyx_tp_dict_version = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      __pyx_obj_dict_version = __Pyx_get_object_dict_version(((PyObject *)__pyx_v_self));
      if (unlikely(__pyx_type_dict_guard != __pyx_tp_dict_version)) {
        __pyx_tp_dict_version = __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
      }
      #endif
      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    }
    #endif
  }

  /* "cygraph/graph_/dynamic_graph.pyx":418
 *             The child vertices of `v`.
 *         """
 *         cdef set children = set()             # <<<<<<<<<<<<<<
 *         cdef int u, w
 * 
 */
  __pyx_t_1 = PySet_New(0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 418, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_v_children = ((PyObject*)__pyx_t_1);
  __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":421
 *         cdef int u, w
 * 
 *         w = self._get_vertex_int(v)             # <<<<<<<<<<<<<<
 * 
 *         for u in range(len(self.vertices)):
 */
  __pyx_t_5 = ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base._get_vertex_int(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_self), __pyx_v_v); if (unlikely(__pyx_t_5 == ((int)-1))) __PYX_ERR(0, 421, __pyx_L1_error)
  __pyx_v_w = __pyx_t_5;

  /* "cygraph/graph_/dynamic_graph.pyx":423
 *         w = self._get_vertex_int(v)
 * 
 *         for u in range(len(self.vertices)):             # <<<<<<<<<<<<<<
 *             if self._adjacency_matrix[w][u] is not None:
 *                 children.add(self.vertices[u])
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.vertices;
  __Pyx_INCREF(__pyx_t_1);
  if (unlikely(__pyx_t_1 == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
    __PYX_ERR(0, 423, __pyx_L1_error)
  }
  __pyx_t_6 = PyList_GET_SIZE(__pyx_t_1); if (unlikely(__pyx_t_6 == ((Py_ssize_t)-1))) __PYX_ERR(0, 423, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __pyx_t_7 = __pyx_t_6;
  for (__pyx_t_5 = 0; __pyx_t_5 < __pyx_t_7; __pyx_t_5+=1) {
    __pyx_v_u = __pyx_t_5;

    /* "cygraph/graph_/dynamic_graph.pyx":424
 * 
 *         for u in range(len(self.vertices)):
 *             if self._adjacency_matrix[w][u] is not None:             # <<<<<<<<<<<<<<
 *                 children.add(self.vertices[u])
 * 
 */
    if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
      __PYX_ERR(0, 424, __pyx_L1_error)
    }
    __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_w, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 424, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_1, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 0, 1, 1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 424, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
    __pyx_t_8 = (__pyx_t_2 != Py_None);
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
    __pyx_t_9 = (__pyx_t_8 != 0);
    if (__pyx_t_9) {

      /* "cygraph/graph_/dynamic_graph.pyx":425
 *         for u in range(len(self.vertices)):
 *             if self._adjacency_matrix[w][u] is not None:
 *                 children.add(self.vertices[u])             # <<<<<<<<<<<<<<
 * 
 *         return children
 */
      if (unlikely(__pyx_v_self->__pyx_base.vertices == Py_None)) {
        PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
        __PYX_ERR(0, 425, __pyx_L1_error)
      }
      __pyx_t_2 = __Pyx_GetItemInt_List(__pyx_v_self->__pyx_base.vertices, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 425, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_2);
      __pyx_t_10 = PySet_Add(__pyx_v_children, __pyx_t_2); if (unlikely(__pyx_t_10 == ((int)-1))) __PYX_ERR(0, 425, __pyx_L1_error)
      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":424
 * 
 *         for u in range(len(self.vertices)):
 *             if self._adjacency_matrix[w][u] is not None:             # <<<<<<<<<<<<<<
 *                 children.add(self.vertices[u])
 * 
 */
    }
  }

  /* "cygraph/graph_/dynamic_graph.pyx":427
 *                 children.add(self.vertices[u])
 * 
 *         return children             # <<<<<<<<<<<<<<
 * 
 *     cpdef set get_parents(self, object v):
 */
  __Pyx_XDECREF(__pyx_r);
  __Pyx_INCREF(__pyx_v_children);
  __pyx_r = __pyx_v_children;
  goto __pyx_L0;

  /* "cygraph/graph_/dynamic_graph.pyx":404
 *             row.pop(u)
 * 
 *     cpdef set get_children(self, object v):             # <<<<<<<<<<<<<<
 *         """Returns the names of all the child vertices of a given
 *         vertex. Equivalent to neighbors if graph is undirected.
 */

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_3);
  __Pyx_XDECREF(__pyx_t_4);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.get_children", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = 0;
  __pyx_L0:;
  __Pyx_XDECREF(__pyx_v_children);
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_23get_children(PyObject *__pyx_v_self, PyObject *__pyx_v_v); /*proto*/
static char __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_22get_children[] = "Returns the names of all the child vertices of a given\n        vertex. Equivalent to neighbors if graph is undirected.\n\n        Parameters\n        ----------\n        v\n            A vertex in the graph.\n\n        Returns\n        -------\n        set\n            The child vertices of `v`.\n        ";
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_23get_children(PyObject *__pyx_v_self, PyObject *__pyx_v_v) {
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("get_children (wrapper)", 0);
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_22get_children(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self), ((PyObject *)__pyx_v_v));

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_22get_children(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v) {
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("get_children", 0);
  __Pyx_XDECREF(__pyx_r);
  __pyx_t_1 = __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_get_children(__pyx_v_self, __pyx_v_v, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 404, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_r = __pyx_t_1;
  __pyx_t_1 = 0;
  goto __pyx_L0;

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.get_children", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":429
 *         return children
 * 
 *     cpdef set get_parents(self, object v):             # <<<<<<<<<<<<<<
 *         """Returns the parents (aka "in-neighbors") of a given vertex.
 *         Equivalent to get_children in undirected graphs.
 */

static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_25get_parents(PyObject *__pyx_v_self, PyObject *__pyx_v_v); /*proto*/
static PyObject *__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_get_parents(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v, int __pyx_skip_dispatch) {
  PyObject *__pyx_v_parents = 0;
  int __pyx_v_u;
  int __pyx_v_w;
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  PyObject *__pyx_t_2 = NULL;
  PyObject *__pyx_t_3 = NULL;
  PyObject *__pyx_t_4 = NULL;
  int __pyx_t_5;
  Py_ssize_t __pyx_t_6;
  Py_ssize_t __pyx_t_7;
  int __pyx_t_8;
  int __pyx_t_9;
  int __pyx_t_10;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("get_parents", 0);
  /* Check if called by wrapper */
  if (unlikely(__pyx_skip_dispatch)) ;
  /* Check if overridden in Python */
  else if (unlikely((Py_TYPE(((PyObject *)__pyx_v_self))->tp_dictoffset != 0) || (Py_TYPE(((PyObject *)__pyx_v_self))->tp_flags & (Py_TPFLAGS_IS_ABSTRACT | Py_TPFLAGS_HEAPTYPE)))) {
    #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    static PY_UINT64_T __pyx_tp_dict_version = __PYX_DICT_VERSION_INIT, __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
    if (unlikely(!__Pyx_object_dict_version_matches(((PyObject *)__pyx_v_self), __pyx_tp_dict_version, __pyx_obj_dict_version))) {
      PY_UINT64_T __pyx_type_dict_guard = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      #endif
      __pyx_t_1 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_get_parents); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 429, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_1);
      if (!PyCFunction_Check(__pyx_t_1) || (PyCFunction_GET_FUNCTION(__pyx_t_1) != (PyCFunction)(void*)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_25get_parents)) {
        __Pyx_XDECREF(__pyx_r);
        __Pyx_INCREF(__pyx_t_1);
        __pyx_t_3 = __pyx_t_1; __pyx_t_4 = NULL;
        if (CYTHON_UNPACK_METHODS && unlikely(PyMethod_Check(__pyx_t_3))) {
          __pyx_t_4 = PyMethod_GET_SELF(__pyx_t_3);
          if (likely(__pyx_t_4)) {
            PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_3);
            __Pyx_INCREF(__pyx_t_4);
            __Pyx_INCREF(function);
            __Pyx_DECREF_SET(__pyx_t_3, function);
          }
        }
        __pyx_t_2 = (__pyx_t_4) ? __Pyx_PyObject_Call2Args(__pyx_t_3, __pyx_t_4, __pyx_v_v) : __Pyx_PyObject_CallOneArg(__pyx_t_3, __pyx_v_v);
        __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
        if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 429, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_2);
        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
        if (!(likely(PySet_CheckExact(__pyx_t_2))||((__pyx_t_2) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "set", Py_TYPE(__pyx_t_2)->tp_name), 0))) __PYX_ERR(0, 429, __pyx_L1_error)
        __pyx_r = ((PyObject*)__pyx_t_2);
        __pyx_t_2 = 0;
        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
        goto __pyx_L0;
      }
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
      __pyx_tp_dict_version = __Pyx_get_tp_dict_version(((PyObject *)__pyx_v_self));
      __pyx_obj_dict_version = __Pyx_get_object_dict_version(((PyObject *)__pyx_v_self));
      if (unlikely(__pyx_type_dict_guard != __pyx_tp_dict_version)) {
        __pyx_tp_dict_version = __pyx_obj_dict_version = __PYX_DICT_VERSION_INIT;
      }
      #endif
      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
      #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_PYTYPE_LOOKUP && CYTHON_USE_TYPE_SLOTS
    }
    #endif
  }

  /* "cygraph/graph_/dynamic_graph.pyx":443
 *             The parent vertices of `v`.
 *         """
 *         cdef set parents = set()             # <<<<<<<<<<<<<<
 *         cdef int u, w
 * 
 */
  __pyx_t_1 = PySet_New(0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 443, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_v_parents = ((PyObject*)__pyx_t_1);
  __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":446
 *         cdef int u, w
 * 
 *         w = self._get_vertex_int(v)             # <<<<<<<<<<<<<<
 * 
 *         for u in range(len(self.vertices)):
 */
  __pyx_t_5 = ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base._get_vertex_int(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_self), __pyx_v_v); if (unlikely(__pyx_t_5 == ((int)-1))) __PYX_ERR(0, 446, __pyx_L1_error)
  __pyx_v_w = __pyx_t_5;

  /* "cygraph/graph_/dynamic_graph.pyx":448
 *         w = self._get_vertex_int(v)
 * 
 *         for u in range(len(self.vertices)):             # <<<<<<<<<<<<<<
 *             if self._adjacency_matrix[u][w] is not None:
 *                 parents.add(self.vertices[u])
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.vertices;
  __Pyx_INCREF(__pyx_t_1);
  if (unlikely(__pyx_t_1 == Py_None)) {
    PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
    __PYX_ERR(0, 448, __pyx_L1_error)
  }
  __pyx_t_6 = PyList_GET_SIZE(__pyx_t_1); if (unlikely(__pyx_t_6 == ((Py_ssize_t)-1))) __PYX_ERR(0, 448, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __pyx_t_7 = __pyx_t_6;
  for (__pyx_t_5 = 0; __pyx_t_5 < __pyx_t_7; __pyx_t_5+=1) {
    __pyx_v_u = __pyx_t_5;

    /* "cygraph/graph_/dynamic_graph.pyx":449
 * 
 *         for u in range(len(self.vertices)):
 *             if self._adjacency_matrix[u][w] is not None:             # <<<<<<<<<<<<<<
 *                 parents.add(self.vertices[u])
 * 
 */
    if (unlikely(__pyx_v_self->_adjacency_matrix == Py_None)) {
      PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
      __PYX_ERR(0, 449, __pyx_L1_error)
    }
    __pyx_t_1 = __Pyx_GetItemInt_List(__pyx_v_self->_adjacency_matrix, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 449, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_1);
    __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_1, __pyx_v_w, int, 1, __Pyx_PyInt_From_int, 0, 1, 1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 449, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
    __pyx_t_8 = (__pyx_t_2 != Py_None);
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
    __pyx_t_9 = (__pyx_t_8 != 0);
    if (__pyx_t_9) {

      /* "cygraph/graph_/dynamic_graph.pyx":450
 *         for u in range(len(self.vertices)):
 *             if self._adjacency_matrix[u][w] is not None:
 *                 parents.add(self.vertices[u])             # <<<<<<<<<<<<<<
 * 
 *         return parents
 */
      if (unlikely(__pyx_v_self->__pyx_base.vertices == Py_None)) {
        PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
        __PYX_ERR(0, 450, __pyx_L1_error)
      }
      __pyx_t_2 = __Pyx_GetItemInt_List(__pyx_v_self->__pyx_base.vertices, __pyx_v_u, int, 1, __Pyx_PyInt_From_int, 1, 1, 1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 450, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_2);
      __pyx_t_10 = PySet_Add(__pyx_v_parents, __pyx_t_2); if (unlikely(__pyx_t_10 == ((int)-1))) __PYX_ERR(0, 450, __pyx_L1_error)
      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":449
 * 
 *         for u in range(len(self.vertices)):
 *             if self._adjacency_matrix[u][w] is not None:             # <<<<<<<<<<<<<<
 *                 parents.add(self.vertices[u])
 * 
 */
    }
  }

  /* "cygraph/graph_/dynamic_graph.pyx":452
 *                 parents.add(self.vertices[u])
 * 
 *         return parents             # <<<<<<<<<<<<<<
 * 
 * 
 */
  __Pyx_XDECREF(__pyx_r);
  __Pyx_INCREF(__pyx_v_parents);
  __pyx_r = __pyx_v_parents;
  goto __pyx_L0;

  /* "cygraph/graph_/dynamic_graph.pyx":429
 *         return children
 * 
 *     cpdef set get_parents(self, object v):             # <<<<<<<<<<<<<<
 *         """Returns the parents (aka "in-neighbors") of a given vertex.
 *         Equivalent to get_children in undirected graphs.
 */

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_3);
  __Pyx_XDECREF(__pyx_t_4);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.get_parents", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = 0;
  __pyx_L0:;
  __Pyx_XDECREF(__pyx_v_parents);
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_25get_parents(PyObject *__pyx_v_self, PyObject *__pyx_v_v); /*proto*/
static char __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_24get_parents[] = "Returns the parents (aka \"in-neighbors\") of a given vertex.\n        Equivalent to get_children in undirected graphs.\n\n        Parameters\n        ----------\n        v\n            A vertex in the graph.\n\n        Returns\n        -------\n        set\n            The parent vertices of `v`.\n        ";
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_25get_parents(PyObject *__pyx_v_self, PyObject *__pyx_v_v) {
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("get_parents (wrapper)", 0);
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_24get_parents(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self), ((PyObject *)__pyx_v_v));

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_24get_parents(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self, PyObject *__pyx_v_v) {
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("get_parents", 0);
  __Pyx_XDECREF(__pyx_r);
  __pyx_t_1 = __pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_get_parents(__pyx_v_self, __pyx_v_v, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 429, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_r = __pyx_t_1;
  __pyx_t_1 = 0;
  goto __pyx_L0;

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.DynamicGraph.get_parents", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pxd":10
 *     # _adjacency_matrix[u][v] -> weight of edge between u and v.
 *     # None means there is no edge.
 *     cdef readonly list _adjacency_matrix             # <<<<<<<<<<<<<<
 */

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_17_adjacency_matrix_1__get__(PyObject *__pyx_v_self); /*proto*/
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_17_adjacency_matrix_1__get__(PyObject *__pyx_v_self) {
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("__get__ (wrapper)", 0);
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_17_adjacency_matrix___get__(((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_self));

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_12DynamicGraph_17_adjacency_matrix___get__(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_self) {
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("__get__", 0);
  __Pyx_XDECREF(__pyx_r);
  __Pyx_INCREF(__pyx_v_self->_adjacency_matrix);
  __pyx_r = __pyx_v_self->_adjacency_matrix;
  goto __pyx_L0;

  /* function exit code */
  __pyx_L0:;
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

/* "cygraph/graph_/dynamic_graph.pyx":455
 * 
 * 
 * def rebuild_dynamic_graph(vertex_attributes, edge_attributes, vertices,             # <<<<<<<<<<<<<<
 *         directed, adjacency_matrix):
 *     """Rebuilds a DynamicGraph instance from unpickled values.
 */

/* Python wrapper */
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_1rebuild_dynamic_graph(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static char __pyx_doc_7cygraph_6graph__13dynamic_graph_rebuild_dynamic_graph[] = "Rebuilds a DynamicGraph instance from unpickled values.\n\n    Parameters\n    ----------\n    Each of the parameters corresponds to an attribute in the\n    DynamicGraph class.\n\n    Returns\n    -------\n    The rebuilt DynamicGraph instance.\n    ";
static PyMethodDef __pyx_mdef_7cygraph_6graph__13dynamic_graph_1rebuild_dynamic_graph = {"rebuild_dynamic_graph", (PyCFunction)(void*)(PyCFunctionWithKeywords)__pyx_pw_7cygraph_6graph__13dynamic_graph_1rebuild_dynamic_graph, METH_VARARGS|METH_KEYWORDS, __pyx_doc_7cygraph_6graph__13dynamic_graph_rebuild_dynamic_graph};
static PyObject *__pyx_pw_7cygraph_6graph__13dynamic_graph_1rebuild_dynamic_graph(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
  PyObject *__pyx_v_vertex_attributes = 0;
  PyObject *__pyx_v_edge_attributes = 0;
  PyObject *__pyx_v_vertices = 0;
  PyObject *__pyx_v_directed = 0;
  PyObject *__pyx_v_adjacency_matrix = 0;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  PyObject *__pyx_r = 0;
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("rebuild_dynamic_graph (wrapper)", 0);
  {
    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s_vertex_attributes,&__pyx_n_s_edge_attributes,&__pyx_n_s_vertices,&__pyx_n_s_directed,&__pyx_n_s_adjacency_matrix,0};
    PyObject* values[5] = {0,0,0,0,0};
    if (unlikely(__pyx_kwds)) {
      Py_ssize_t kw_args;
      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
      switch (pos_args) {
        case  5: values[4] = PyTuple_GET_ITEM(__pyx_args, 4);
        CYTHON_FALLTHROUGH;
        case  4: values[3] = PyTuple_GET_ITEM(__pyx_args, 3);
        CYTHON_FALLTHROUGH;
        case  3: values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
        CYTHON_FALLTHROUGH;
        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
        CYTHON_FALLTHROUGH;
        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
        CYTHON_FALLTHROUGH;
        case  0: break;
        default: goto __pyx_L5_argtuple_error;
      }
      kw_args = PyDict_Size(__pyx_kwds);
      switch (pos_args) {
        case  0:
        if (likely((values[0] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_vertex_attributes)) != 0)) kw_args--;
        else goto __pyx_L5_argtuple_error;
        CYTHON_FALLTHROUGH;
        case  1:
        if (likely((values[1] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_edge_attributes)) != 0)) kw_args--;
        else {
          __Pyx_RaiseArgtupleInvalid("rebuild_dynamic_graph", 1, 5, 5, 1); __PYX_ERR(0, 455, __pyx_L3_error)
        }
        CYTHON_FALLTHROUGH;
        case  2:
        if (likely((values[2] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_vertices)) != 0)) kw_args--;
        else {
          __Pyx_RaiseArgtupleInvalid("rebuild_dynamic_graph", 1, 5, 5, 2); __PYX_ERR(0, 455, __pyx_L3_error)
        }
        CYTHON_FALLTHROUGH;
        case  3:
        if (likely((values[3] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_directed)) != 0)) kw_args--;
        else {
          __Pyx_RaiseArgtupleInvalid("rebuild_dynamic_graph", 1, 5, 5, 3); __PYX_ERR(0, 455, __pyx_L3_error)
        }
        CYTHON_FALLTHROUGH;
        case  4:
        if (likely((values[4] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_adjacency_matrix)) != 0)) kw_args--;
        else {
          __Pyx_RaiseArgtupleInvalid("rebuild_dynamic_graph", 1, 5, 5, 4); __PYX_ERR(0, 455, __pyx_L3_error)
        }
      }
      if (unlikely(kw_args > 0)) {
        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "rebuild_dynamic_graph") < 0)) __PYX_ERR(0, 455, __pyx_L3_error)
      }
    } else if (PyTuple_GET_SIZE(__pyx_args) != 5) {
      goto __pyx_L5_argtuple_error;
    } else {
      values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
      values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
      values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
      values[3] = PyTuple_GET_ITEM(__pyx_args, 3);
      values[4] = PyTuple_GET_ITEM(__pyx_args, 4);
    }
    __pyx_v_vertex_attributes = values[0];
    __pyx_v_edge_attributes = values[1];
    __pyx_v_vertices = values[2];
    __pyx_v_directed = values[3];
    __pyx_v_adjacency_matrix = values[4];
  }
  goto __pyx_L4_argument_unpacking_done;
  __pyx_L5_argtuple_error:;
  __Pyx_RaiseArgtupleInvalid("rebuild_dynamic_graph", 1, 5, 5, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 455, __pyx_L3_error)
  __pyx_L3_error:;
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.rebuild_dynamic_graph", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __Pyx_RefNannyFinishContext();
  return NULL;
  __pyx_L4_argument_unpacking_done:;
  __pyx_r = __pyx_pf_7cygraph_6graph__13dynamic_graph_rebuild_dynamic_graph(__pyx_self, __pyx_v_vertex_attributes, __pyx_v_edge_attributes, __pyx_v_vertices, __pyx_v_directed, __pyx_v_adjacency_matrix);

  /* function exit code */
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}

static PyObject *__pyx_pf_7cygraph_6graph__13dynamic_graph_rebuild_dynamic_graph(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vertex_attributes, PyObject *__pyx_v_edge_attributes, PyObject *__pyx_v_vertices, PyObject *__pyx_v_directed, PyObject *__pyx_v_adjacency_matrix) {
  struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *__pyx_v_dynamic_graph = NULL;
  PyObject *__pyx_v_vertex = NULL;
  PyObject *__pyx_v_key = NULL;
  PyObject *__pyx_v_val = NULL;
  PyObject *__pyx_v_edge = NULL;
  PyObject *__pyx_r = NULL;
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  PyObject *__pyx_t_2 = NULL;
  Py_ssize_t __pyx_t_3;
  PyObject *(*__pyx_t_4)(PyObject *);
  Py_ssize_t __pyx_t_5;
  Py_ssize_t __pyx_t_6;
  int __pyx_t_7;
  PyObject *__pyx_t_8 = NULL;
  PyObject *__pyx_t_9 = NULL;
  int __pyx_t_10;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("rebuild_dynamic_graph", 0);

  /* "cygraph/graph_/dynamic_graph.pyx":468
 *     The rebuilt DynamicGraph instance.
 *     """
 *     dynamic_graph = DynamicGraph(directed=directed, vertices=vertices,             # <<<<<<<<<<<<<<
 *         adjacency_matrix=adjacency_matrix)
 *     for vertex in vertex_attributes:
 */
  __pyx_t_1 = __Pyx_PyDict_NewPresized(3); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 468, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  if (PyDict_SetItem(__pyx_t_1, __pyx_n_s_directed, __pyx_v_directed) < 0) __PYX_ERR(0, 468, __pyx_L1_error)
  if (PyDict_SetItem(__pyx_t_1, __pyx_n_s_vertices, __pyx_v_vertices) < 0) __PYX_ERR(0, 468, __pyx_L1_error)

  /* "cygraph/graph_/dynamic_graph.pyx":469
 *     """
 *     dynamic_graph = DynamicGraph(directed=directed, vertices=vertices,
 *         adjacency_matrix=adjacency_matrix)             # <<<<<<<<<<<<<<
 *     for vertex in vertex_attributes:
 *         for key, val in vertex_attributes[vertex].items():
 */
  if (PyDict_SetItem(__pyx_t_1, __pyx_n_s_adjacency_matrix, __pyx_v_adjacency_matrix) < 0) __PYX_ERR(0, 468, __pyx_L1_error)

  /* "cygraph/graph_/dynamic_graph.pyx":468
 *     The rebuilt DynamicGraph instance.
 *     """
 *     dynamic_graph = DynamicGraph(directed=directed, vertices=vertices,             # <<<<<<<<<<<<<<
 *         adjacency_matrix=adjacency_matrix)
 *     for vertex in vertex_attributes:
 */
  __pyx_t_2 = __Pyx_PyObject_Call(((PyObject *)__pyx_ptype_7cygraph_6graph__13dynamic_graph_DynamicGraph), __pyx_empty_tuple, __pyx_t_1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 468, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_2);
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __pyx_v_dynamic_graph = ((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_t_2);
  __pyx_t_2 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":470
 *     dynamic_graph = DynamicGraph(directed=directed, vertices=vertices,
 *         adjacency_matrix=adjacency_matrix)
 *     for vertex in vertex_attributes:             # <<<<<<<<<<<<<<
 *         for key, val in vertex_attributes[vertex].items():
 *             dynamic_graph.set_vertex_attribute(vertex, key, val)
 */
  if (likely(PyList_CheckExact(__pyx_v_vertex_attributes)) || PyTuple_CheckExact(__pyx_v_vertex_attributes)) {
    __pyx_t_2 = __pyx_v_vertex_attributes; __Pyx_INCREF(__pyx_t_2); __pyx_t_3 = 0;
    __pyx_t_4 = NULL;
  } else {
    __pyx_t_3 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_v_vertex_attributes); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 470, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    __pyx_t_4 = Py_TYPE(__pyx_t_2)->tp_iternext; if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 470, __pyx_L1_error)
  }
  for (;;) {
    if (likely(!__pyx_t_4)) {
      if (likely(PyList_CheckExact(__pyx_t_2))) {
        if (__pyx_t_3 >= PyList_GET_SIZE(__pyx_t_2)) break;
        #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
        __pyx_t_1 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_1); __pyx_t_3++; if (unlikely(0 < 0)) __PYX_ERR(0, 470, __pyx_L1_error)
        #else
        __pyx_t_1 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 470, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_1);
        #endif
      } else {
        if (__pyx_t_3 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
        #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
        __pyx_t_1 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_1); __pyx_t_3++; if (unlikely(0 < 0)) __PYX_ERR(0, 470, __pyx_L1_error)
        #else
        __pyx_t_1 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 470, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_1);
        #endif
      }
    } else {
      __pyx_t_1 = __pyx_t_4(__pyx_t_2);
      if (unlikely(!__pyx_t_1)) {
        PyObject* exc_type = PyErr_Occurred();
        if (exc_type) {
          if (likely(__Pyx_PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))) PyErr_Clear();
          else __PYX_ERR(0, 470, __pyx_L1_error)
        }
        break;
      }
      __Pyx_GOTREF(__pyx_t_1);
    }
    __Pyx_XDECREF_SET(__pyx_v_vertex, __pyx_t_1);
    __pyx_t_1 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":471
 *         adjacency_matrix=adjacency_matrix)
 *     for vertex in vertex_attributes:
 *         for key, val in vertex_attributes[vertex].items():             # <<<<<<<<<<<<<<
 *             dynamic_graph.set_vertex_attribute(vertex, key, val)
 *     for edge in edge_attributes:
 */
    __pyx_t_5 = 0;
    __pyx_t_8 = __Pyx_PyObject_GetItem(__pyx_v_vertex_attributes, __pyx_v_vertex); if (unlikely(!__pyx_t_8)) __PYX_ERR(0, 471, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_8);
    if (unlikely(__pyx_t_8 == Py_None)) {
      PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%.30s'", "items");
      __PYX_ERR(0, 471, __pyx_L1_error)
    }
    __pyx_t_9 = __Pyx_dict_iterator(__pyx_t_8, 0, __pyx_n_s_items, (&__pyx_t_6), (&__pyx_t_7)); if (unlikely(!__pyx_t_9)) __PYX_ERR(0, 471, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_9);
    __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;
    __Pyx_XDECREF(__pyx_t_1);
    __pyx_t_1 = __pyx_t_9;
    __pyx_t_9 = 0;
    while (1) {
      __pyx_t_10 = __Pyx_dict_iter_next(__pyx_t_1, __pyx_t_6, &__pyx_t_5, &__pyx_t_9, &__pyx_t_8, NULL, __pyx_t_7);
      if (unlikely(__pyx_t_10 == 0)) break;
      if (unlikely(__pyx_t_10 == -1)) __PYX_ERR(0, 471, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_9);
      __Pyx_GOTREF(__pyx_t_8);
      __Pyx_XDECREF_SET(__pyx_v_key, __pyx_t_9);
      __pyx_t_9 = 0;
      __Pyx_XDECREF_SET(__pyx_v_val, __pyx_t_8);
      __pyx_t_8 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":472
 *     for vertex in vertex_attributes:
 *         for key, val in vertex_attributes[vertex].items():
 *             dynamic_graph.set_vertex_attribute(vertex, key, val)             # <<<<<<<<<<<<<<
 *     for edge in edge_attributes:
 *         for key, val in edge_attributes[edge].items():
 */
      ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_dynamic_graph->__pyx_base.__pyx_vtab)->__pyx_base.set_vertex_attribute(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_dynamic_graph), __pyx_v_vertex, __pyx_v_key, __pyx_v_val, 0); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 472, __pyx_L1_error)
    }
    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":470
 *     dynamic_graph = DynamicGraph(directed=directed, vertices=vertices,
 *         adjacency_matrix=adjacency_matrix)
 *     for vertex in vertex_attributes:             # <<<<<<<<<<<<<<
 *         for key, val in vertex_attributes[vertex].items():
 *             dynamic_graph.set_vertex_attribute(vertex, key, val)
 */
  }
  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":473
 *         for key, val in vertex_attributes[vertex].items():
 *             dynamic_graph.set_vertex_attribute(vertex, key, val)
 *     for edge in edge_attributes:             # <<<<<<<<<<<<<<
 *         for key, val in edge_attributes[edge].items():
 *             dynamic_graph.set_edge_attribute(edge, key, val)
 */
  if (likely(PyList_CheckExact(__pyx_v_edge_attributes)) || PyTuple_CheckExact(__pyx_v_edge_attributes)) {
    __pyx_t_2 = __pyx_v_edge_attributes; __Pyx_INCREF(__pyx_t_2); __pyx_t_3 = 0;
    __pyx_t_4 = NULL;
  } else {
    __pyx_t_3 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_v_edge_attributes); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 473, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_2);
    __pyx_t_4 = Py_TYPE(__pyx_t_2)->tp_iternext; if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 473, __pyx_L1_error)
  }
  for (;;) {
    if (likely(!__pyx_t_4)) {
      if (likely(PyList_CheckExact(__pyx_t_2))) {
        if (__pyx_t_3 >= PyList_GET_SIZE(__pyx_t_2)) break;
        #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
        __pyx_t_1 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_1); __pyx_t_3++; if (unlikely(0 < 0)) __PYX_ERR(0, 473, __pyx_L1_error)
        #else
        __pyx_t_1 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 473, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_1);
        #endif
      } else {
        if (__pyx_t_3 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
        #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
        __pyx_t_1 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_1); __pyx_t_3++; if (unlikely(0 < 0)) __PYX_ERR(0, 473, __pyx_L1_error)
        #else
        __pyx_t_1 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 473, __pyx_L1_error)
        __Pyx_GOTREF(__pyx_t_1);
        #endif
      }
    } else {
      __pyx_t_1 = __pyx_t_4(__pyx_t_2);
      if (unlikely(!__pyx_t_1)) {
        PyObject* exc_type = PyErr_Occurred();
        if (exc_type) {
          if (likely(__Pyx_PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))) PyErr_Clear();
          else __PYX_ERR(0, 473, __pyx_L1_error)
        }
        break;
      }
      __Pyx_GOTREF(__pyx_t_1);
    }
    __Pyx_XDECREF_SET(__pyx_v_edge, __pyx_t_1);
    __pyx_t_1 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":474
 *             dynamic_graph.set_vertex_attribute(vertex, key, val)
 *     for edge in edge_attributes:
 *         for key, val in edge_attributes[edge].items():             # <<<<<<<<<<<<<<
 *             dynamic_graph.set_edge_attribute(edge, key, val)
 *     return dynamic_graph
 */
    __pyx_t_6 = 0;
    __pyx_t_8 = __Pyx_PyObject_GetItem(__pyx_v_edge_attributes, __pyx_v_edge); if (unlikely(!__pyx_t_8)) __PYX_ERR(0, 474, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_8);
    if (unlikely(__pyx_t_8 == Py_None)) {
      PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%.30s'", "items");
      __PYX_ERR(0, 474, __pyx_L1_error)
    }
    __pyx_t_9 = __Pyx_dict_iterator(__pyx_t_8, 0, __pyx_n_s_items, (&__pyx_t_5), (&__pyx_t_7)); if (unlikely(!__pyx_t_9)) __PYX_ERR(0, 474, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_9);
    __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;
    __Pyx_XDECREF(__pyx_t_1);
    __pyx_t_1 = __pyx_t_9;
    __pyx_t_9 = 0;
    while (1) {
      __pyx_t_10 = __Pyx_dict_iter_next(__pyx_t_1, __pyx_t_5, &__pyx_t_6, &__pyx_t_9, &__pyx_t_8, NULL, __pyx_t_7);
      if (unlikely(__pyx_t_10 == 0)) break;
      if (unlikely(__pyx_t_10 == -1)) __PYX_ERR(0, 474, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_9);
      __Pyx_GOTREF(__pyx_t_8);
      __Pyx_XDECREF_SET(__pyx_v_key, __pyx_t_9);
      __pyx_t_9 = 0;
      __Pyx_XDECREF_SET(__pyx_v_val, __pyx_t_8);
      __pyx_t_8 = 0;

      /* "cygraph/graph_/dynamic_graph.pyx":475
 *     for edge in edge_attributes:
 *         for key, val in edge_attributes[edge].items():
 *             dynamic_graph.set_edge_attribute(edge, key, val)             # <<<<<<<<<<<<<<
 *     return dynamic_graph
 */
      if (!(likely(PyTuple_CheckExact(__pyx_v_edge))||((__pyx_v_edge) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "tuple", Py_TYPE(__pyx_v_edge)->tp_name), 0))) __PYX_ERR(0, 475, __pyx_L1_error)
      ((struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph *)__pyx_v_dynamic_graph->__pyx_base.__pyx_vtab)->__pyx_base.set_edge_attribute(((struct __pyx_obj_7cygraph_6graph__5graph_Graph *)__pyx_v_dynamic_graph), ((PyObject*)__pyx_v_edge), __pyx_v_key, __pyx_v_val, 0); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 475, __pyx_L1_error)
    }
    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;

    /* "cygraph/graph_/dynamic_graph.pyx":473
 *         for key, val in vertex_attributes[vertex].items():
 *             dynamic_graph.set_vertex_attribute(vertex, key, val)
 *     for edge in edge_attributes:             # <<<<<<<<<<<<<<
 *         for key, val in edge_attributes[edge].items():
 *             dynamic_graph.set_edge_attribute(edge, key, val)
 */
  }
  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":476
 *         for key, val in edge_attributes[edge].items():
 *             dynamic_graph.set_edge_attribute(edge, key, val)
 *     return dynamic_graph             # <<<<<<<<<<<<<<
 */
  __Pyx_XDECREF(__pyx_r);
  __Pyx_INCREF(((PyObject *)__pyx_v_dynamic_graph));
  __pyx_r = ((PyObject *)__pyx_v_dynamic_graph);
  goto __pyx_L0;

  /* "cygraph/graph_/dynamic_graph.pyx":455
 * 
 * 
 * def rebuild_dynamic_graph(vertex_attributes, edge_attributes, vertices,             # <<<<<<<<<<<<<<
 *         directed, adjacency_matrix):
 *     """Rebuilds a DynamicGraph instance from unpickled values.
 */

  /* function exit code */
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_8);
  __Pyx_XDECREF(__pyx_t_9);
  __Pyx_AddTraceback("cygraph.graph_.dynamic_graph.rebuild_dynamic_graph", __pyx_clineno, __pyx_lineno, __pyx_filename);
  __pyx_r = NULL;
  __pyx_L0:;
  __Pyx_XDECREF((PyObject *)__pyx_v_dynamic_graph);
  __Pyx_XDECREF(__pyx_v_vertex);
  __Pyx_XDECREF(__pyx_v_key);
  __Pyx_XDECREF(__pyx_v_val);
  __Pyx_XDECREF(__pyx_v_edge);
  __Pyx_XGIVEREF(__pyx_r);
  __Pyx_RefNannyFinishContext();
  return __pyx_r;
}
static struct __pyx_vtabstruct_7cygraph_6graph__13dynamic_graph_DynamicGraph __pyx_vtable_7cygraph_6graph__13dynamic_graph_DynamicGraph;

static PyObject *__pyx_tp_new_7cygraph_6graph__13dynamic_graph_DynamicGraph(PyTypeObject *t, PyObject *a, PyObject *k) {
  struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *p;
  PyObject *o = __pyx_ptype_7cygraph_6graph__5graph_Graph->tp_new(t, a, k);
  if (unlikely(!o)) return 0;
  p = ((struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)o);
  p->__pyx_base.__pyx_vtab = (struct __pyx_vtabstruct_7cygraph_6graph__5graph_Graph*)__pyx_vtabptr_7cygraph_6graph__13dynamic_graph_DynamicGraph;
  p->_adjacency_matrix = ((PyObject*)Py_None); Py_INCREF(Py_None);
  if (unlikely(__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_1__cinit__(o, a, k) < 0)) goto bad;
  return o;
  bad:
  Py_DECREF(o); o = 0;
  return NULL;
}

static void __pyx_tp_dealloc_7cygraph_6graph__13dynamic_graph_DynamicGraph(PyObject *o) {
  struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *p = (struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)o;
  #if CYTHON_USE_TP_FINALIZE
  if (unlikely(PyType_HasFeature(Py_TYPE(o), Py_TPFLAGS_HAVE_FINALIZE) && Py_TYPE(o)->tp_finalize) && !_PyGC_FINALIZED(o)) {
    if (PyObject_CallFinalizerFromDealloc(o)) return;
  }
  #endif
  PyObject_GC_UnTrack(o);
  Py_CLEAR(p->_adjacency_matrix);
  PyObject_GC_Track(o);
  if (likely(__pyx_ptype_7cygraph_6graph__5graph_Graph)) __pyx_ptype_7cygraph_6graph__5graph_Graph->tp_dealloc(o); else __Pyx_call_next_tp_dealloc(o, __pyx_tp_dealloc_7cygraph_6graph__13dynamic_graph_DynamicGraph);
}

static int __pyx_tp_traverse_7cygraph_6graph__13dynamic_graph_DynamicGraph(PyObject *o, visitproc v, void *a) {
  int e;
  struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *p = (struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)o;
  e = ((likely(__pyx_ptype_7cygraph_6graph__5graph_Graph)) ? ((__pyx_ptype_7cygraph_6graph__5graph_Graph->tp_traverse) ? __pyx_ptype_7cygraph_6graph__5graph_Graph->tp_traverse(o, v, a) : 0) : __Pyx_call_next_tp_traverse(o, v, a, __pyx_tp_traverse_7cygraph_6graph__13dynamic_graph_DynamicGraph)); if (e) return e;
  if (p->_adjacency_matrix) {
    e = (*v)(p->_adjacency_matrix, a); if (e) return e;
  }
  return 0;
}

static int __pyx_tp_clear_7cygraph_6graph__13dynamic_graph_DynamicGraph(PyObject *o) {
  PyObject* tmp;
  struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *p = (struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph *)o;
  if (likely(__pyx_ptype_7cygraph_6graph__5graph_Graph)) { if (__pyx_ptype_7cygraph_6graph__5graph_Graph->tp_clear) __pyx_ptype_7cygraph_6graph__5graph_Graph->tp_clear(o); } else __Pyx_call_next_tp_clear(o, __pyx_tp_clear_7cygraph_6graph__13dynamic_graph_DynamicGraph);
  tmp = ((PyObject*)p->_adjacency_matrix);
  p->_adjacency_matrix = ((PyObject*)Py_None); Py_INCREF(Py_None);
  Py_XDECREF(tmp);
  return 0;
}

static PyObject *__pyx_getprop_7cygraph_6graph__13dynamic_graph_12DynamicGraph_edges(PyObject *o, CYTHON_UNUSED void *x) {
  return __pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_5edges_1__get__(o);
}

static PyObject *__pyx_getprop_7cygraph_6graph__13dynamic_graph_12DynamicGraph__adjacency_matrix(PyObject *o, CYTHON_UNUSED void *x) {
  return __pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_17_adjacency_matrix_1__get__(o);
}

static PyMethodDef __pyx_methods_7cygraph_6graph__13dynamic_graph_DynamicGraph[] = {
  {"__copy__", (PyCFunction)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_3__copy__, METH_NOARGS, 0},
  {"__reduce__", (PyCFunction)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_5__reduce__, METH_NOARGS, 0},
  {"add_edge", (PyCFunction)(void*)(PyCFunctionWithKeywords)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_7add_edge, METH_VARARGS|METH_KEYWORDS, __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_6add_edge},
  {"set_edge_weight", (PyCFunction)(void*)(PyCFunctionWithKeywords)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_9set_edge_weight, METH_VARARGS|METH_KEYWORDS, __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_8set_edge_weight},
  {"remove_edge", (PyCFunction)(void*)(PyCFunctionWithKeywords)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_11remove_edge, METH_VARARGS|METH_KEYWORDS, __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_10remove_edge},
  {"has_edge", (PyCFunction)(void*)(PyCFunctionWithKeywords)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_13has_edge, METH_VARARGS|METH_KEYWORDS, __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_12has_edge},
  {"get_edge_weight", (PyCFunction)(void*)(PyCFunctionWithKeywords)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_15get_edge_weight, METH_VARARGS|METH_KEYWORDS, __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_14get_edge_weight},
  {"add_vertex", (PyCFunction)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_17add_vertex, METH_O, __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_16add_vertex},
  {"add_vertices", (PyCFunction)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_19add_vertices, METH_O, __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_18add_vertices},
  {"remove_vertex", (PyCFunction)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_21remove_vertex, METH_O, __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_20remove_vertex},
  {"get_children", (PyCFunction)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_23get_children, METH_O, __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_22get_children},
  {"get_parents", (PyCFunction)__pyx_pw_7cygraph_6graph__13dynamic_graph_12DynamicGraph_25get_parents, METH_O, __pyx_doc_7cygraph_6graph__13dynamic_graph_12DynamicGraph_24get_parents},
  {0, 0, 0, 0}
};

static struct PyGetSetDef __pyx_getsets_7cygraph_6graph__13dynamic_graph_DynamicGraph[] = {
  {(char *)"edges", __pyx_getprop_7cygraph_6graph__13dynamic_graph_12DynamicGraph_edges, 0, (char *)0, 0},
  {(char *)"_adjacency_matrix", __pyx_getprop_7cygraph_6graph__13dynamic_graph_12DynamicGraph__adjacency_matrix, 0, (char *)0, 0},
  {0, 0, 0, 0, 0}
};

static PyTypeObject __pyx_type_7cygraph_6graph__13dynamic_graph_DynamicGraph = {
  PyVarObject_HEAD_INIT(0, 0)
  "cygraph.graph_.dynamic_graph.DynamicGraph", /*tp_name*/
  sizeof(struct __pyx_obj_7cygraph_6graph__13dynamic_graph_DynamicGraph), /*tp_basicsize*/
  0, /*tp_itemsize*/
  __pyx_tp_dealloc_7cygraph_6graph__13dynamic_graph_DynamicGraph, /*tp_dealloc*/
  #if PY_VERSION_HEX < 0x030800b4
  0, /*tp_print*/
  #endif
  #if PY_VERSION_HEX >= 0x030800b4
  0, /*tp_vectorcall_offset*/
  #endif
  0, /*tp_getattr*/
  0, /*tp_setattr*/
  #if PY_MAJOR_VERSION < 3
  0, /*tp_compare*/
  #endif
  #if PY_MAJOR_VERSION >= 3
  0, /*tp_as_async*/
  #endif
  0, /*tp_repr*/
  0, /*tp_as_number*/
  0, /*tp_as_sequence*/
  0, /*tp_as_mapping*/
  0, /*tp_hash*/
  0, /*tp_call*/
  0, /*tp_str*/
  0, /*tp_getattro*/
  0, /*tp_setattro*/
  0, /*tp_as_buffer*/
  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
  "A class representing a graph data structure.\n\n    This is a directed graph class, although it will function as an\n    undirected graph by creating directed edges both ways between two\n    vertices. This class contains only basic functionality; algorithms\n    are implemented externally.\n\n    Adding vertices to a graph is faster than with a StaticGraph, but\n    overall performance (especially for operations like getting children\n    and getting edge weights) is comprimised.\n\n    Parameters\n    ----------\n    graph: cygraph.Graph, optional\n        A graph to create a copy of. If this is not None, all other\n        parameters are ignored. Edge and vertex attributes are\n        deepcopied.\n    directed: bint, optional\n        Whether or not the graph contains directed edges.\n    vertices: list, optional\n        A list of vertices (can be any hashable type).\n    adjacency_matrix: list, optional\n        An adjacency matrix to generate the graph from.\n    adjacency_list: dict of int and set of int, optional\n        An adjacency list to generate the graph from. Note that the\n        vertices inside this dictionary must be integers, referring to\n        vertices by their index in `vertices`. Assumes all edge weights\n        are 1.0.\n\n    Attributes\n    ----------\n    directed: bint\n        Whether or not the graph contains directed edges.\n    vertices: list\n        The vertices in this graph.\n    edges: set\n        Tuples contianing the two vertices of each edge.\n    edge_attribtues: dict\n        Maps (v1, v2) tuples to dicts mapping edge attribute keys to\n        corresponding values.\n    vertex_attribtues: dict\n        Maps vertices to dicts mapping vertex attribute keys to\n        corresponding values.\n    adjacency_matrix: list of lists\n        The adjacency matrix that represents this graph.\n    adjacency_list: list of lists\n        The adjacency list that represents this graph.\n    ", /*tp_doc*/
  __pyx_tp_traverse_7cygraph_6graph__13dynamic_graph_DynamicGraph, /*tp_traverse*/
  __pyx_tp_clear_7cygraph_6graph__13dynamic_graph_DynamicGraph, /*tp_clear*/
  0, /*tp_richcompare*/
  0, /*tp_weaklistoffset*/
  0, /*tp_iter*/
  0, /*tp_iternext*/
  __pyx_methods_7cygraph_6graph__13dynamic_graph_DynamicGraph, /*tp_methods*/
  0, /*tp_members*/
  __pyx_getsets_7cygraph_6graph__13dynamic_graph_DynamicGraph, /*tp_getset*/
  0, /*tp_base*/
  0, /*tp_dict*/
  0, /*tp_descr_get*/
  0, /*tp_descr_set*/
  0, /*tp_dictoffset*/
  0, /*tp_init*/
  0, /*tp_alloc*/
  __pyx_tp_new_7cygraph_6graph__13dynamic_graph_DynamicGraph, /*tp_new*/
  0, /*tp_free*/
  0, /*tp_is_gc*/
  0, /*tp_bases*/
  0, /*tp_mro*/
  0, /*tp_cache*/
  0, /*tp_subclasses*/
  0, /*tp_weaklist*/
  0, /*tp_del*/
  0, /*tp_version_tag*/
  #if PY_VERSION_HEX >= 0x030400a1
  0, /*tp_finalize*/
  #endif
  #if PY_VERSION_HEX >= 0x030800b1
  0, /*tp_vectorcall*/
  #endif
  #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
  0, /*tp_print*/
  #endif
};

static PyMethodDef __pyx_methods[] = {
  {0, 0, 0, 0}
};

#if PY_MAJOR_VERSION >= 3
#if CYTHON_PEP489_MULTI_PHASE_INIT
static PyObject* __pyx_pymod_create(PyObject *spec, PyModuleDef *def); /*proto*/
static int __pyx_pymod_exec_dynamic_graph(PyObject* module); /*proto*/
static PyModuleDef_Slot __pyx_moduledef_slots[] = {
  {Py_mod_create, (void*)__pyx_pymod_create},
  {Py_mod_exec, (void*)__pyx_pymod_exec_dynamic_graph},
  {0, NULL}
};
#endif

static struct PyModuleDef __pyx_moduledef = {
    PyModuleDef_HEAD_INIT,
    "dynamic_graph",
    __pyx_k_Implementation_of_graph_data_str, /* m_doc */
  #if CYTHON_PEP489_MULTI_PHASE_INIT
    0, /* m_size */
  #else
    -1, /* m_size */
  #endif
    __pyx_methods /* m_methods */,
  #if CYTHON_PEP489_MULTI_PHASE_INIT
    __pyx_moduledef_slots, /* m_slots */
  #else
    NULL, /* m_reload */
  #endif
    NULL, /* m_traverse */
    NULL, /* m_clear */
    NULL /* m_free */
};
#endif
#ifndef CYTHON_SMALL_CODE
#if defined(__clang__)
    #define CYTHON_SMALL_CODE
#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
    #define CYTHON_SMALL_CODE __attribute__((cold))
#else
    #define CYTHON_SMALL_CODE
#endif
#endif

static __Pyx_StringTabEntry __pyx_string_tab[] = {
  {&__pyx_kp_u_Adjacency_matrix_must_be_a_squar, __pyx_k_Adjacency_matrix_must_be_a_squar, sizeof(__pyx_k_Adjacency_matrix_must_be_a_squar), 0, 1, 0, 0},
  {&__pyx_kp_u_Attempting_to_remove_edge_that_d, __pyx_k_Attempting_to_remove_edge_that_d, sizeof(__pyx_k_Attempting_to_remove_edge_that_d), 0, 1, 0, 0},
  {&__pyx_kp_u_Different_number_of_vertices_as, __pyx_k_Different_number_of_vertices_as, sizeof(__pyx_k_Different_number_of_vertices_as), 0, 1, 0, 0},
  {&__pyx_kp_u_Different_number_of_vertices_in, __pyx_k_Different_number_of_vertices_in, sizeof(__pyx_k_Different_number_of_vertices_in), 0, 1, 0, 0},
  {&__pyx_n_s_DynamicGraph, __pyx_k_DynamicGraph, sizeof(__pyx_k_DynamicGraph), 0, 0, 1, 1},
  {&__pyx_kp_u_Edge, __pyx_k_Edge, sizeof(__pyx_k_Edge), 0, 1, 0, 0},
  {&__pyx_kp_u_Edge_v1_v2_doesn_t_exist, __pyx_k_Edge_v1_v2_doesn_t_exist, sizeof(__pyx_k_Edge_v1_v2_doesn_t_exist), 0, 1, 0, 0},
  {&__pyx_n_s_ValueError, __pyx_k_ValueError, sizeof(__pyx_k_ValueError), 0, 0, 1, 1},
  {&__pyx_kp_u__4, __pyx_k__4, sizeof(__pyx_k__4), 0, 1, 0, 0},
  {&__pyx_kp_u__6, __pyx_k__6, sizeof(__pyx_k__6), 0, 1, 0, 0},
  {&__pyx_n_s_add_edge, __pyx_k_add_edge, sizeof(__pyx_k_add_edge), 0, 0, 1, 1},
  {&__pyx_n_s_add_vertex, __pyx_k_add_vertex, sizeof(__pyx_k_add_vertex), 0, 0, 1, 1},
  {&__pyx_n_s_add_vertices, __pyx_k_add_vertices, sizeof(__pyx_k_add_vertices), 0, 0, 1, 1},
  {&__pyx_n_s_adjacency_list, __pyx_k_adjacency_list, sizeof(__pyx_k_adjacency_list), 0, 0, 1, 1},
  {&__pyx_n_s_adjacency_matrix, __pyx_k_adjacency_matrix, sizeof(__pyx_k_adjacency_matrix), 0, 0, 1, 1},
  {&__pyx_kp_u_already_exists, __pyx_k_already_exists, sizeof(__pyx_k_already_exists), 0, 1, 0, 0},
  {&__pyx_kp_u_and_the_number_of_rows_is, __pyx_k_and_the_number_of_rows_is, sizeof(__pyx_k_and_the_number_of_rows_is), 0, 1, 0, 0},
  {&__pyx_n_s_append, __pyx_k_append, sizeof(__pyx_k_append), 0, 0, 1, 1},
  {&__pyx_kp_u_both_adjacency_list_and_adjacenc, __pyx_k_both_adjacency_list_and_adjacenc, sizeof(__pyx_k_both_adjacency_list_and_adjacenc), 0, 1, 0, 0},
  {&__pyx_n_s_cline_in_traceback, __pyx_k_cline_in_traceback, sizeof(__pyx_k_cline_in_traceback), 0, 0, 1, 1},
  {&__pyx_n_s_cygraph_graph__dynamic_graph, __pyx_k_cygraph_graph__dynamic_graph, sizeof(__pyx_k_cygraph_graph__dynamic_graph), 0, 0, 1, 1},
  {&__pyx_kp_s_cygraph_graph__dynamic_graph_pyx, __pyx_k_cygraph_graph__dynamic_graph_pyx, sizeof(__pyx_k_cygraph_graph__dynamic_graph_pyx), 0, 0, 1, 0},
  {&__pyx_n_s_directed, __pyx_k_directed, sizeof(__pyx_k_directed), 0, 0, 1, 1},
  {&__pyx_n_s_dynamic_graph, __pyx_k_dynamic_graph, sizeof(__pyx_k_dynamic_graph), 0, 0, 1, 1},
  {&__pyx_n_s_edge, __pyx_k_edge, sizeof(__pyx_k_edge), 0, 0, 1, 1},
  {&__pyx_n_s_edge_attributes, __pyx_k_edge_attributes, sizeof(__pyx_k_edge_attributes), 0, 0, 1, 1},
  {&__pyx_kp_u_edge_v1_v2_is_not_in_graph, __pyx_k_edge_v1_v2_is_not_in_graph, sizeof(__pyx_k_edge_v1_v2_is_not_in_graph), 0, 1, 0, 0},
  {&__pyx_n_s_edges, __pyx_k_edges, sizeof(__pyx_k_edges), 0, 0, 1, 1},
  {&__pyx_n_s_enumerate, __pyx_k_enumerate, sizeof(__pyx_k_enumerate), 0, 0, 1, 1},
  {&__pyx_n_s_get_children, __pyx_k_get_children, sizeof(__pyx_k_get_children), 0, 0, 1, 1},
  {&__pyx_n_s_get_edge_weight, __pyx_k_get_edge_weight, sizeof(__pyx_k_get_edge_weight), 0, 0, 1, 1},
  {&__pyx_n_s_get_parents, __pyx_k_get_parents, sizeof(__pyx_k_get_parents), 0, 0, 1, 1},
  {&__pyx_n_s_graph, __pyx_k_graph, sizeof(__pyx_k_graph), 0, 0, 1, 1},
  {&__pyx_n_s_has_edge, __pyx_k_has_edge, sizeof(__pyx_k_has_edge), 0, 0, 1, 1},
  {&__pyx_n_s_import, __pyx_k_import, sizeof(__pyx_k_import), 0, 0, 1, 1},
  {&__pyx_kp_u_in_adjacency_list, __pyx_k_in_adjacency_list, sizeof(__pyx_k_in_adjacency_list), 0, 1, 0, 0},
  {&__pyx_kp_u_in_vertices_and, __pyx_k_in_vertices_and, sizeof(__pyx_k_in_vertices_and), 0, 1, 0, 0},
  {&__pyx_n_s_index, __pyx_k_index, sizeof(__pyx_k_index), 0, 0, 1, 1},
  {&__pyx_kp_u_is_already_in_graph, __pyx_k_is_already_in_graph, sizeof(__pyx_k_is_already_in_graph), 0, 1, 0, 0},
  {&__pyx_kp_u_is_already_in_graph_2, __pyx_k_is_already_in_graph_2, sizeof(__pyx_k_is_already_in_graph_2), 0, 1, 0, 0},
  {&__pyx_kp_u_is_of_length, __pyx_k_is_of_length, sizeof(__pyx_k_is_of_length), 0, 1, 0, 0},
  {&__pyx_n_s_items, __pyx_k_items, sizeof(__pyx_k_items), 0, 0, 1, 1},
  {&__pyx_n_s_key, __pyx_k_key, sizeof(__pyx_k_key), 0, 0, 1, 1},
  {&__pyx_n_s_main, __pyx_k_main, sizeof(__pyx_k_main), 0, 0, 1, 1},
  {&__pyx_n_s_name, __pyx_k_name, sizeof(__pyx_k_name), 0, 0, 1, 1},
  {&__pyx_n_s_pop, __pyx_k_pop, sizeof(__pyx_k_pop), 0, 0, 1, 1},
  {&__pyx_n_s_pyx_vtable, __pyx_k_pyx_vtable, sizeof(__pyx_k_pyx_vtable), 0, 0, 1, 1},
  {&__pyx_n_s_range, __pyx_k_range, sizeof(__pyx_k_range), 0, 0, 1, 1},
  {&__pyx_n_s_rebuild_dynamic_graph, __pyx_k_rebuild_dynamic_graph, sizeof(__pyx_k_rebuild_dynamic_graph), 0, 0, 1, 1},
  {&__pyx_n_s_remove, __pyx_k_remove, sizeof(__pyx_k_remove), 0, 0, 1, 1},
  {&__pyx_n_s_remove_edge, __pyx_k_remove_edge, sizeof(__pyx_k_remove_edge), 0, 0, 1, 1},
  {&__pyx_n_s_remove_vertex, __pyx_k_remove_vertex, sizeof(__pyx_k_remove_vertex), 0, 0, 1, 1},
  {&__pyx_kp_u_rows, __pyx_k_rows, sizeof(__pyx_k_rows), 0, 1, 0, 0},
  {&__pyx_n_s_set_edge_weight, __pyx_k_set_edge_weight, sizeof(__pyx_k_set_edge_weight), 0, 0, 1, 1},
  {&__pyx_n_s_set_vertex_attribtue, __pyx_k_set_vertex_attribtue, sizeof(__pyx_k_set_vertex_attribtue), 0, 0, 1, 1},
  {&__pyx_n_s_test, __pyx_k_test, sizeof(__pyx_k_test), 0, 0, 1, 1},
  {&__pyx_n_s_v1, __pyx_k_v1, sizeof(__pyx_k_v1), 0, 0, 1, 1},
  {&__pyx_n_s_v2, __pyx_k_v2, sizeof(__pyx_k_v2), 0, 0, 1, 1},
  {&__pyx_n_s_val, __pyx_k_val, sizeof(__pyx_k_val), 0, 0, 1, 1},
  {&__pyx_n_s_vertex, __pyx_k_vertex, sizeof(__pyx_k_vertex), 0, 0, 1, 1},
  {&__pyx_n_s_vertex_attributes, __pyx_k_vertex_attributes, sizeof(__pyx_k_vertex_attributes), 0, 0, 1, 1},
  {&__pyx_n_s_vertices, __pyx_k_vertices, sizeof(__pyx_k_vertices), 0, 0, 1, 1},
  {&__pyx_kp_u_vertices_and, __pyx_k_vertices_and, sizeof(__pyx_k_vertices_and), 0, 1, 0, 0},
  {&__pyx_n_s_warn, __pyx_k_warn, sizeof(__pyx_k_warn), 0, 0, 1, 1},
  {&__pyx_n_s_warnings, __pyx_k_warnings, sizeof(__pyx_k_warnings), 0, 0, 1, 1},
  {&__pyx_n_s_weight, __pyx_k_weight, sizeof(__pyx_k_weight), 0, 0, 1, 1},
  {0, 0, 0, 0, 0, 0, 0}
};
static CYTHON_SMALL_CODE int __Pyx_InitCachedBuiltins(void) {
  __pyx_builtin_range = __Pyx_GetBuiltinName(__pyx_n_s_range); if (!__pyx_builtin_range) __PYX_ERR(0, 75, __pyx_L1_error)
  __pyx_builtin_enumerate = __Pyx_GetBuiltinName(__pyx_n_s_enumerate); if (!__pyx_builtin_enumerate) __PYX_ERR(0, 97, __pyx_L1_error)
  __pyx_builtin_ValueError = __Pyx_GetBuiltinName(__pyx_n_s_ValueError); if (!__pyx_builtin_ValueError) __PYX_ERR(0, 100, __pyx_L1_error)
  return 0;
  __pyx_L1_error:;
  return -1;
}

static CYTHON_SMALL_CODE int __Pyx_InitCachedConstants(void) {
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("__Pyx_InitCachedConstants", 0);

  /* "cygraph/graph_/dynamic_graph.pyx":111
 *                 # Check that there is no specified adjacency list.
 *                 if adjacency_list != []:
 *                     raise ValueError("both adjacency list and adjacency matrix "             # <<<<<<<<<<<<<<
 *                                      "specified.")
 * 
 */
  __pyx_tuple__5 = PyTuple_Pack(1, __pyx_kp_u_both_adjacency_list_and_adjacenc); if (unlikely(!__pyx_tuple__5)) __PYX_ERR(0, 111, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_tuple__5);
  __Pyx_GIVEREF(__pyx_tuple__5);

  /* "cygraph/graph_/dynamic_graph.pyx":252
 * 
 *         if self._adjacency_matrix[u][v] is None:
 *             raise ValueError("Edge ({v1}, {v2}) doesn't exist.")             # <<<<<<<<<<<<<<
 * 
 *         self._adjacency_matrix[u][v] = weight
 */
  __pyx_tuple__7 = PyTuple_Pack(1, __pyx_kp_u_Edge_v1_v2_doesn_t_exist); if (unlikely(!__pyx_tuple__7)) __PYX_ERR(0, 252, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_tuple__7);
  __Pyx_GIVEREF(__pyx_tuple__7);

  /* "cygraph/graph_/dynamic_graph.pyx":323
 *             return weight
 *         else:
 *             raise ValueError("edge ({v1}, {v2}) is not in graph.")             # <<<<<<<<<<<<<<
 * 
 *     cpdef void add_vertex(self, object v) except *:
 */
  __pyx_tuple__8 = PyTuple_Pack(1, __pyx_kp_u_edge_v1_v2_is_not_in_graph); if (unlikely(!__pyx_tuple__8)) __PYX_ERR(0, 323, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_tuple__8);
  __Pyx_GIVEREF(__pyx_tuple__8);

  /* "cygraph/graph_/dynamic_graph.pyx":455
 * 
 * 
 * def rebuild_dynamic_graph(vertex_attributes, edge_attributes, vertices,             # <<<<<<<<<<<<<<
 *         directed, adjacency_matrix):
 *     """Rebuilds a DynamicGraph instance from unpickled values.
 */
  __pyx_tuple__9 = PyTuple_Pack(10, __pyx_n_s_vertex_attributes, __pyx_n_s_edge_attributes, __pyx_n_s_vertices, __pyx_n_s_directed, __pyx_n_s_adjacency_matrix, __pyx_n_s_dynamic_graph, __pyx_n_s_vertex, __pyx_n_s_key, __pyx_n_s_val, __pyx_n_s_edge); if (unlikely(!__pyx_tuple__9)) __PYX_ERR(0, 455, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_tuple__9);
  __Pyx_GIVEREF(__pyx_tuple__9);
  __pyx_codeobj__10 = (PyObject*)__Pyx_PyCode_New(5, 0, 10, 0, CO_OPTIMIZED|CO_NEWLOCALS, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_tuple__9, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_cygraph_graph__dynamic_graph_pyx, __pyx_n_s_rebuild_dynamic_graph, 455, __pyx_empty_bytes); if (unlikely(!__pyx_codeobj__10)) __PYX_ERR(0, 455, __pyx_L1_error)
  __Pyx_RefNannyFinishContext();
  return 0;
  __pyx_L1_error:;
  __Pyx_RefNannyFinishContext();
  return -1;
}

static CYTHON_SMALL_CODE int __Pyx_InitGlobals(void) {
  if (__Pyx_InitStrings(__pyx_string_tab) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
  __pyx_float_1_0 = PyFloat_FromDouble(1.0); if (unlikely(!__pyx_float_1_0)) __PYX_ERR(0, 1, __pyx_L1_error)
  return 0;
  __pyx_L1_error:;
  return -1;
}

static CYTHON_SMALL_CODE int __Pyx_modinit_global_init_code(void); /*proto*/
static CYTHON_SMALL_CODE int __Pyx_modinit_variable_export_code(void); /*proto*/
static CYTHON_SMALL_CODE int __Pyx_modinit_function_export_code(void); /*proto*/
static CYTHON_SMALL_CODE int __Pyx_modinit_type_init_code(void); /*proto*/
static CYTHON_SMALL_CODE int __Pyx_modinit_type_import_code(void); /*proto*/
static CYTHON_SMALL_CODE int __Pyx_modinit_variable_import_code(void); /*proto*/
static CYTHON_SMALL_CODE int __Pyx_modinit_function_import_code(void); /*proto*/

static int __Pyx_modinit_global_init_code(void) {
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("__Pyx_modinit_global_init_code", 0);
  /*--- Global init code ---*/
  __Pyx_RefNannyFinishContext();
  return 0;
}

static int __Pyx_modinit_variable_export_code(void) {
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("__Pyx_modinit_variable_export_code", 0);
  /*--- Variable export code ---*/
  __Pyx_RefNannyFinishContext();
  return 0;
}

static int __Pyx_modinit_function_export_code(void) {
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("__Pyx_modinit_function_export_code", 0);
  /*--- Function export code ---*/
  __Pyx_RefNannyFinishContext();
  return 0;
}

static int __Pyx_modinit_type_init_code(void) {
  __Pyx_RefNannyDeclarations
  PyObject *__pyx_t_1 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannySetupContext("__Pyx_modinit_type_init_code", 0);
  /*--- Type init code ---*/
  __pyx_t_1 = PyImport_ImportModule("cygraph.graph_.graph"); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 1, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_ptype_7cygraph_6graph__5graph_Graph = __Pyx_ImportType(__pyx_t_1, "cygraph.graph_.graph", "Graph", sizeof(struct __pyx_obj_7cygraph_6graph__5graph_Graph), __Pyx_ImportType_CheckSize_Warn);
   if (!__pyx_ptype_7cygraph_6graph__5graph_Graph) __PYX_ERR(0, 1, __pyx_L1_error)
  __pyx_vtabptr_7cygraph_6graph__5graph_Graph = (struct __pyx_vtabstruct_7cygraph_6graph__5graph_Graph*)__Pyx_GetVtable(__pyx_ptype_7cygraph_6graph__5graph_Graph->tp_dict); if (unlikely(!__pyx_vtabptr_7cygraph_6graph__5graph_Graph)) __PYX_ERR(0, 1, __pyx_L1_error)
  __pyx_vtabptr_7cygraph_6graph__13dynamic_graph_DynamicGraph = &__pyx_vtable_7cygraph_6graph__13dynamic_graph_DynamicGraph;
  __pyx_vtable_7cygraph_6graph__13dynamic_graph_DynamicGraph.__pyx_base = *__pyx_vtabptr_7cygraph_6graph__5graph_Graph;
  __pyx_vtable_7cygraph_6graph__13dynamic_graph_DynamicGraph.__pyx_base.add_vertex = (void (*)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, int __pyx_skip_dispatch))__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_vertex;
  __pyx_vtable_7cygraph_6graph__13dynamic_graph_DynamicGraph.__pyx_base.add_vertices = (void (*)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, int __pyx_skip_dispatch))__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_vertices;
  __pyx_vtable_7cygraph_6graph__13dynamic_graph_DynamicGraph.__pyx_base.remove_vertex = (void (*)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, int __pyx_skip_dispatch))__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_remove_vertex;
  __pyx_vtable_7cygraph_6graph__13dynamic_graph_DynamicGraph.__pyx_base.add_edge = (void (*)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch, struct __pyx_opt_args_7cygraph_6graph__5graph_5Graph_add_edge *__pyx_optional_args))__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_add_edge;
  __pyx_vtable_7cygraph_6graph__13dynamic_graph_DynamicGraph.__pyx_base.set_edge_weight = (void (*)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, double, int __pyx_skip_dispatch))__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_set_edge_weight;
  __pyx_vtable_7cygraph_6graph__13dynamic_graph_DynamicGraph.__pyx_base.remove_edge = (void (*)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch))__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_remove_edge;
  __pyx_vtable_7cygraph_6graph__13dynamic_graph_DynamicGraph.__pyx_base.get_edge_weight = (double (*)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch))__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_get_edge_weight;
  __pyx_vtable_7cygraph_6graph__13dynamic_graph_DynamicGraph.__pyx_base.has_edge = (int (*)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, PyObject *, int __pyx_skip_dispatch))__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_has_edge;
  __pyx_vtable_7cygraph_6graph__13dynamic_graph_DynamicGraph.__pyx_base.get_children = (PyObject *(*)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, int __pyx_skip_dispatch))__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_get_children;
  __pyx_vtable_7cygraph_6graph__13dynamic_graph_DynamicGraph.__pyx_base.get_parents = (PyObject *(*)(struct __pyx_obj_7cygraph_6graph__5graph_Graph *, PyObject *, int __pyx_skip_dispatch))__pyx_f_7cygraph_6graph__13dynamic_graph_12DynamicGraph_get_parents;
  __pyx_type_7cygraph_6graph__13dynamic_graph_DynamicGraph.tp_base = __pyx_ptype_7cygraph_6graph__5graph_Graph;
  if (PyType_Ready(&__pyx_type_7cygraph_6graph__13dynamic_graph_DynamicGraph) < 0) __PYX_ERR(0, 12, __pyx_L1_error)
  #if PY_VERSION_HEX < 0x030800B1
  __pyx_type_7cygraph_6graph__13dynamic_graph_DynamicGraph.tp_print = 0;
  #endif
  if ((CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP) && likely(!__pyx_type_7cygraph_6graph__13dynamic_graph_DynamicGraph.tp_dictoffset && __pyx_type_7cygraph_6graph__13dynamic_graph_DynamicGraph.tp_getattro == PyObject_GenericGetAttr)) {
    __pyx_type_7cygraph_6graph__13dynamic_graph_DynamicGraph.tp_getattro = __Pyx_PyObject_GenericGetAttr;
  }
  if (__Pyx_SetVtable(__pyx_type_7cygraph_6graph__13dynamic_graph_DynamicGraph.tp_dict, __pyx_vtabptr_7cygraph_6graph__13dynamic_graph_DynamicGraph) < 0) __PYX_ERR(0, 12, __pyx_L1_error)
  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_DynamicGraph, (PyObject *)&__pyx_type_7cygraph_6graph__13dynamic_graph_DynamicGraph) < 0) __PYX_ERR(0, 12, __pyx_L1_error)
  __pyx_ptype_7cygraph_6graph__13dynamic_graph_DynamicGraph = &__pyx_type_7cygraph_6graph__13dynamic_graph_DynamicGraph;
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
  __Pyx_RefNannyFinishContext();
  return 0;
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_RefNannyFinishContext();
  return -1;
}

static int __Pyx_modinit_type_import_code(void) {
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("__Pyx_modinit_type_import_code", 0);
  /*--- Type import code ---*/
  __Pyx_RefNannyFinishContext();
  return 0;
}

static int __Pyx_modinit_variable_import_code(void) {
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("__Pyx_modinit_variable_import_code", 0);
  /*--- Variable import code ---*/
  __Pyx_RefNannyFinishContext();
  return 0;
}

static int __Pyx_modinit_function_import_code(void) {
  __Pyx_RefNannyDeclarations
  __Pyx_RefNannySetupContext("__Pyx_modinit_function_import_code", 0);
  /*--- Function import code ---*/
  __Pyx_RefNannyFinishContext();
  return 0;
}


#ifndef CYTHON_NO_PYINIT_EXPORT
#define __Pyx_PyMODINIT_FUNC PyMODINIT_FUNC
#elif PY_MAJOR_VERSION < 3
#ifdef __cplusplus
#define __Pyx_PyMODINIT_FUNC extern "C" void
#else
#define __Pyx_PyMODINIT_FUNC void
#endif
#else
#ifdef __cplusplus
#define __Pyx_PyMODINIT_FUNC extern "C" PyObject *
#else
#define __Pyx_PyMODINIT_FUNC PyObject *
#endif
#endif


#if PY_MAJOR_VERSION < 3
__Pyx_PyMODINIT_FUNC initdynamic_graph(void) CYTHON_SMALL_CODE; /*proto*/
__Pyx_PyMODINIT_FUNC initdynamic_graph(void)
#else
__Pyx_PyMODINIT_FUNC PyInit_dynamic_graph(void) CYTHON_SMALL_CODE; /*proto*/
__Pyx_PyMODINIT_FUNC PyInit_dynamic_graph(void)
#if CYTHON_PEP489_MULTI_PHASE_INIT
{
  return PyModuleDef_Init(&__pyx_moduledef);
}
static CYTHON_SMALL_CODE int __Pyx_check_single_interpreter(void) {
    #if PY_VERSION_HEX >= 0x030700A1
    static PY_INT64_T main_interpreter_id = -1;
    PY_INT64_T current_id = PyInterpreterState_GetID(PyThreadState_Get()->interp);
    if (main_interpreter_id == -1) {
        main_interpreter_id = current_id;
        return (unlikely(current_id == -1)) ? -1 : 0;
    } else if (unlikely(main_interpreter_id != current_id))
    #else
    static PyInterpreterState *main_interpreter = NULL;
    PyInterpreterState *current_interpreter = PyThreadState_Get()->interp;
    if (!main_interpreter) {
        main_interpreter = current_interpreter;
    } else if (unlikely(main_interpreter != current_interpreter))
    #endif
    {
        PyErr_SetString(
            PyExc_ImportError,
            "Interpreter change detected - this module can only be loaded into one interpreter per process.");
        return -1;
    }
    return 0;
}
static CYTHON_SMALL_CODE int __Pyx_copy_spec_to_module(PyObject *spec, PyObject *moddict, const char* from_name, const char* to_name, int allow_none) {
    PyObject *value = PyObject_GetAttrString(spec, from_name);
    int result = 0;
    if (likely(value)) {
        if (allow_none || value != Py_None) {
            result = PyDict_SetItemString(moddict, to_name, value);
        }
        Py_DECREF(value);
    } else if (PyErr_ExceptionMatches(PyExc_AttributeError)) {
        PyErr_Clear();
    } else {
        result = -1;
    }
    return result;
}
static CYTHON_SMALL_CODE PyObject* __pyx_pymod_create(PyObject *spec, CYTHON_UNUSED PyModuleDef *def) {
    PyObject *module = NULL, *moddict, *modname;
    if (__Pyx_check_single_interpreter())
        return NULL;
    if (__pyx_m)
        return __Pyx_NewRef(__pyx_m);
    modname = PyObject_GetAttrString(spec, "name");
    if (unlikely(!modname)) goto bad;
    module = PyModule_NewObject(modname);
    Py_DECREF(modname);
    if (unlikely(!module)) goto bad;
    moddict = PyModule_GetDict(module);
    if (unlikely(!moddict)) goto bad;
    if (unlikely(__Pyx_copy_spec_to_module(spec, moddict, "loader", "__loader__", 1) < 0)) goto bad;
    if (unlikely(__Pyx_copy_spec_to_module(spec, moddict, "origin", "__file__", 1) < 0)) goto bad;
    if (unlikely(__Pyx_copy_spec_to_module(spec, moddict, "parent", "__package__", 1) < 0)) goto bad;
    if (unlikely(__Pyx_copy_spec_to_module(spec, moddict, "submodule_search_locations", "__path__", 0) < 0)) goto bad;
    return module;
bad:
    Py_XDECREF(module);
    return NULL;
}


static CYTHON_SMALL_CODE int __pyx_pymod_exec_dynamic_graph(PyObject *__pyx_pyinit_module)
#endif
#endif
{
  PyObject *__pyx_t_1 = NULL;
  int __pyx_lineno = 0;
  const char *__pyx_filename = NULL;
  int __pyx_clineno = 0;
  __Pyx_RefNannyDeclarations
  #if CYTHON_PEP489_MULTI_PHASE_INIT
  if (__pyx_m) {
    if (__pyx_m == __pyx_pyinit_module) return 0;
    PyErr_SetString(PyExc_RuntimeError, "Module 'dynamic_graph' has already been imported. Re-initialisation is not supported.");
    return -1;
  }
  #elif PY_MAJOR_VERSION >= 3
  if (__pyx_m) return __Pyx_NewRef(__pyx_m);
  #endif
  #if CYTHON_REFNANNY
__Pyx_RefNanny = __Pyx_RefNannyImportAPI("refnanny");
if (!__Pyx_RefNanny) {
  PyErr_Clear();
  __Pyx_RefNanny = __Pyx_RefNannyImportAPI("Cython.Runtime.refnanny");
  if (!__Pyx_RefNanny)
      Py_FatalError("failed to import 'refnanny' module");
}
#endif
  __Pyx_RefNannySetupContext("__Pyx_PyMODINIT_FUNC PyInit_dynamic_graph(void)", 0);
  if (__Pyx_check_binary_version() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  #ifdef __Pxy_PyFrame_Initialize_Offsets
  __Pxy_PyFrame_Initialize_Offsets();
  #endif
  __pyx_empty_tuple = PyTuple_New(0); if (unlikely(!__pyx_empty_tuple)) __PYX_ERR(0, 1, __pyx_L1_error)
  __pyx_empty_bytes = PyBytes_FromStringAndSize("", 0); if (unlikely(!__pyx_empty_bytes)) __PYX_ERR(0, 1, __pyx_L1_error)
  __pyx_empty_unicode = PyUnicode_FromStringAndSize("", 0); if (unlikely(!__pyx_empty_unicode)) __PYX_ERR(0, 1, __pyx_L1_error)
  #ifdef __Pyx_CyFunction_USED
  if (__pyx_CyFunction_init() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  #endif
  #ifdef __Pyx_FusedFunction_USED
  if (__pyx_FusedFunction_init() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  #endif
  #ifdef __Pyx_Coroutine_USED
  if (__pyx_Coroutine_init() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  #endif
  #ifdef __Pyx_Generator_USED
  if (__pyx_Generator_init() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  #endif
  #ifdef __Pyx_AsyncGen_USED
  if (__pyx_AsyncGen_init() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  #endif
  #ifdef __Pyx_StopAsyncIteration_USED
  if (__pyx_StopAsyncIteration_init() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  #endif
  /*--- Library function declarations ---*/
  /*--- Threads initialization code ---*/
  #if defined(__PYX_FORCE_INIT_THREADS) && __PYX_FORCE_INIT_THREADS
  #ifdef WITH_THREAD /* Python build with threading support? */
  PyEval_InitThreads();
  #endif
  #endif
  /*--- Module creation code ---*/
  #if CYTHON_PEP489_MULTI_PHASE_INIT
  __pyx_m = __pyx_pyinit_module;
  Py_INCREF(__pyx_m);
  #else
  #if PY_MAJOR_VERSION < 3
  __pyx_m = Py_InitModule4("dynamic_graph", __pyx_methods, __pyx_k_Implementation_of_graph_data_str, 0, PYTHON_API_VERSION); Py_XINCREF(__pyx_m);
  #else
  __pyx_m = PyModule_Create(&__pyx_moduledef);
  #endif
  if (unlikely(!__pyx_m)) __PYX_ERR(0, 1, __pyx_L1_error)
  #endif
  __pyx_d = PyModule_GetDict(__pyx_m); if (unlikely(!__pyx_d)) __PYX_ERR(0, 1, __pyx_L1_error)
  Py_INCREF(__pyx_d);
  __pyx_b = PyImport_AddModule(__Pyx_BUILTIN_MODULE_NAME); if (unlikely(!__pyx_b)) __PYX_ERR(0, 1, __pyx_L1_error)
  Py_INCREF(__pyx_b);
  __pyx_cython_runtime = PyImport_AddModule((char *) "cython_runtime"); if (unlikely(!__pyx_cython_runtime)) __PYX_ERR(0, 1, __pyx_L1_error)
  Py_INCREF(__pyx_cython_runtime);
  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
  /*--- Initialize various global constants etc. ---*/
  if (__Pyx_InitGlobals() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  #if PY_MAJOR_VERSION < 3 && (__PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT)
  if (__Pyx_init_sys_getdefaultencoding_params() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  #endif
  if (__pyx_module_is_main_cygraph__graph___dynamic_graph) {
    if (PyObject_SetAttr(__pyx_m, __pyx_n_s_name, __pyx_n_s_main) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  }
  #if PY_MAJOR_VERSION >= 3
  {
    PyObject *modules = PyImport_GetModuleDict(); if (unlikely(!modules)) __PYX_ERR(0, 1, __pyx_L1_error)
    if (!PyDict_GetItemString(modules, "cygraph.graph_.dynamic_graph")) {
      if (unlikely(PyDict_SetItemString(modules, "cygraph.graph_.dynamic_graph", __pyx_m) < 0)) __PYX_ERR(0, 1, __pyx_L1_error)
    }
  }
  #endif
  /*--- Builtin init code ---*/
  if (__Pyx_InitCachedBuiltins() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  /*--- Constants init code ---*/
  if (__Pyx_InitCachedConstants() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  /*--- Global type/function init code ---*/
  (void)__Pyx_modinit_global_init_code();
  (void)__Pyx_modinit_variable_export_code();
  (void)__Pyx_modinit_function_export_code();
  if (unlikely(__Pyx_modinit_type_init_code() < 0)) __PYX_ERR(0, 1, __pyx_L1_error)
  (void)__Pyx_modinit_type_import_code();
  (void)__Pyx_modinit_variable_import_code();
  (void)__Pyx_modinit_function_import_code();
  /*--- Execution code ---*/
  #if defined(__Pyx_Generator_USED) || defined(__Pyx_Coroutine_USED)
  if (__Pyx_patch_abc() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  #endif

  /* "cygraph/graph_/dynamic_graph.pyx":7
 * """
 * 
 * import warnings             # <<<<<<<<<<<<<<
 * 
 * from cygraph.graph_.graph cimport Graph
 */
  __pyx_t_1 = __Pyx_Import(__pyx_n_s_warnings, 0, 0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 7, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  if (PyDict_SetItem(__pyx_d, __pyx_n_s_warnings, __pyx_t_1) < 0) __PYX_ERR(0, 7, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":62
 *     """
 * 
 *     def __cinit__(self, Graph graph=None, bint directed=False, list vertices=[],             # <<<<<<<<<<<<<<
 *             list adjacency_matrix=[], list adjacency_list=[]):
 * 
 */
  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 62, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_k_ = ((PyObject*)__pyx_t_1);
  __Pyx_GIVEREF(__pyx_t_1);
  __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":63
 * 
 *     def __cinit__(self, Graph graph=None, bint directed=False, list vertices=[],
 *             list adjacency_matrix=[], list adjacency_list=[]):             # <<<<<<<<<<<<<<
 * 
 *         cdef int size
 */
  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 63, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_k__2 = ((PyObject*)__pyx_t_1);
  __Pyx_GIVEREF(__pyx_t_1);
  __pyx_t_1 = 0;
  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 63, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  __pyx_k__3 = ((PyObject*)__pyx_t_1);
  __Pyx_GIVEREF(__pyx_t_1);
  __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":455
 * 
 * 
 * def rebuild_dynamic_graph(vertex_attributes, edge_attributes, vertices,             # <<<<<<<<<<<<<<
 *         directed, adjacency_matrix):
 *     """Rebuilds a DynamicGraph instance from unpickled values.
 */
  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_7cygraph_6graph__13dynamic_graph_1rebuild_dynamic_graph, NULL, __pyx_n_s_cygraph_graph__dynamic_graph); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 455, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  if (PyDict_SetItem(__pyx_d, __pyx_n_s_rebuild_dynamic_graph, __pyx_t_1) < 0) __PYX_ERR(0, 455, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;

  /* "cygraph/graph_/dynamic_graph.pyx":1
 * #!python             # <<<<<<<<<<<<<<
 * #cython: language_level=3
 * """Implementation of graph data structure with python list as adjacency
 */
  __pyx_t_1 = __Pyx_PyDict_NewPresized(0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 1, __pyx_L1_error)
  __Pyx_GOTREF(__pyx_t_1);
  if (PyDict_SetItem(__pyx_d, __pyx_n_s_test, __pyx_t_1) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;

  /*--- Wrapped vars code ---*/

  goto __pyx_L0;
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  if (__pyx_m) {
    if (__pyx_d) {
      __Pyx_AddTraceback("init cygraph.graph_.dynamic_graph", __pyx_clineno, __pyx_lineno, __pyx_filename);
    }
    Py_CLEAR(__pyx_m);
  } else if (!PyErr_Occurred()) {
    PyErr_SetString(PyExc_ImportError, "init cygraph.graph_.dynamic_graph");
  }
  __pyx_L0:;
  __Pyx_RefNannyFinishContext();
  #if CYTHON_PEP489_MULTI_PHASE_INIT
  return (__pyx_m != NULL) ? 0 : -1;
  #elif PY_MAJOR_VERSION >= 3
  return __pyx_m;
  #else
  return;
  #endif
}

/* --- Runtime support code --- */
/* Refnanny */
#if CYTHON_REFNANNY
static __Pyx_RefNannyAPIStruct *__Pyx_RefNannyImportAPI(const char *modname) {
    PyObject *m = NULL, *p = NULL;
    void *r = NULL;
    m = PyImport_ImportModule(modname);
    if (!m) goto end;
    p = PyObject_GetAttrString(m, "RefNannyAPI");
    if (!p) goto end;
    r = PyLong_AsVoidPtr(p);
end:
    Py_XDECREF(p);
    Py_XDECREF(m);
    return (__Pyx_RefNannyAPIStruct *)r;
}
#endif

/* PyObjectGetAttrStr */
#if CYTHON_USE_TYPE_SLOTS
static CYTHON_INLINE PyObject* __Pyx_PyObject_GetAttrStr(PyObject* obj, PyObject* attr_name) {
    PyTypeObject* tp = Py_TYPE(obj);
    if (likely(tp->tp_getattro))
        return tp->tp_getattro(obj, attr_name);
#if PY_MAJOR_VERSION < 3
    if (likely(tp->tp_getattr))
        return tp->tp_getattr(obj, PyString_AS_STRING(attr_name));
#endif
    return PyObject_GetAttr(obj, attr_name);
}
#endif

/* GetBuiltinName */
static PyObject *__Pyx_GetBuiltinName(PyObject *name) {
    PyObject* result = __Pyx_PyObject_GetAttrStr(__pyx_b, name);
    if (unlikely(!result)) {
        PyErr_Format(PyExc_NameError,
#if PY_MAJOR_VERSION >= 3
            "name '%U' is not defined", name);
#else
            "name '%.200s' is not defined", PyString_AS_STRING(name));
#endif
    }
    return result;
}

/* RaiseDoubleKeywords */
static void __Pyx_RaiseDoubleKeywordsError(
    const char* func_name,
    PyObject* kw_name)
{
    PyErr_Format(PyExc_TypeError,
        #if PY_MAJOR_VERSION >= 3
        "%s() got multiple values for keyword argument '%U'", func_name, kw_name);
        #else
        "%s() got multiple values for keyword argument '%s'", func_name,
        PyString_AsString(kw_name));
        #endif
}

/* ParseKeywords */
static int __Pyx_ParseOptionalKeywords(
    PyObject *kwds,
    PyObject **argnames[],
    PyObject *kwds2,
    PyObject *values[],
    Py_ssize_t num_pos_args,
    const char* function_name)
{
    PyObject *key = 0, *value = 0;
    Py_ssize_t pos = 0;
    PyObject*** name;
    PyObject*** first_kw_arg = argnames + num_pos_args;
    while (PyDict_Next(kwds, &pos, &key, &value)) {
        name = first_kw_arg;
        while (*name && (**name != key)) name++;
        if (*name) {
            values[name-argnames] = value;
            continue;
        }
        name = first_kw_arg;
        #if PY_MAJOR_VERSION < 3
        if (likely(PyString_Check(key))) {
            while (*name) {
                if ((CYTHON_COMPILING_IN_PYPY || PyString_GET_SIZE(**name) == PyString_GET_SIZE(key))
                        && _PyString_Eq(**name, key)) {
                    values[name-argnames] = value;
                    break;
                }
                name++;
            }
            if (*name) continue;
            else {
                PyObject*** argname = argnames;
                while (argname != first_kw_arg) {
                    if ((**argname == key) || (
                            (CYTHON_COMPILING_IN_PYPY || PyString_GET_SIZE(**argname) == PyString_GET_SIZE(key))
                             && _PyString_Eq(**argname, key))) {
                        goto arg_passed_twice;
                    }
                    argname++;
                }
            }
        } else
        #endif
        if (likely(PyUnicode_Check(key))) {
            while (*name) {
                int cmp = (**name == key) ? 0 :
                #if !CYTHON_COMPILING_IN_PYPY && PY_MAJOR_VERSION >= 3
                    (__Pyx_PyUnicode_GET_LENGTH(**name) != __Pyx_PyUnicode_GET_LENGTH(key)) ? 1 :
                #endif
                    PyUnicode_Compare(**name, key);
                if (cmp < 0 && unlikely(PyErr_Occurred())) goto bad;
                if (cmp == 0) {
                    values[name-argnames] = value;
                    break;
                }
                name++;
            }
            if (*name) continue;
            else {
                PyObject*** argname = argnames;
                while (argname != first_kw_arg) {
                    int cmp = (**argname == key) ? 0 :
                    #if !CYTHON_COMPILING_IN_PYPY && PY_MAJOR_VERSION >= 3
                        (__Pyx_PyUnicode_GET_LENGTH(**argname) != __Pyx_PyUnicode_GET_LENGTH(key)) ? 1 :
                    #endif
                        PyUnicode_Compare(**argname, key);
                    if (cmp < 0 && unlikely(PyErr_Occurred())) goto bad;
                    if (cmp == 0) goto arg_passed_twice;
                    argname++;
                }
            }
        } else
            goto invalid_keyword_type;
        if (kwds2) {
            if (unlikely(PyDict_SetItem(kwds2, key, value))) goto bad;
        } else {
            goto invalid_keyword;
        }
    }
    return 0;
arg_passed_twice:
    __Pyx_RaiseDoubleKeywordsError(function_name, key);
    goto bad;
invalid_keyword_type:
    PyErr_Format(PyExc_TypeError,
        "%.200s() keywords must be strings", function_name);
    goto bad;
invalid_keyword:
    PyErr_Format(PyExc_TypeError,
    #if PY_MAJOR_VERSION < 3
        "%.200s() got an unexpected keyword argument '%.200s'",
        function_name, PyString_AsString(key));
    #else
        "%s() got an unexpected keyword argument '%U'",
        function_name, key);
    #endif
bad:
    return -1;
}

/* RaiseArgTupleInvalid */
static void __Pyx_RaiseArgtupleInvalid(
    const char* func_name,
    int exact,
    Py_ssize_t num_min,
    Py_ssize_t num_max,
    Py_ssize_t num_found)
{
    Py_ssize_t num_expected;
    const char *more_or_less;
    if (num_found < num_min) {
        num_expected = num_min;
        more_or_less = "at least";
    } else {
        num_expected = num_max;
        more_or_less = "at most";
    }
    if (exact) {
        more_or_less = "exactly";
    }
    PyErr_Format(PyExc_TypeError,
                 "%.200s() takes %.8s %" CYTHON_FORMAT_SSIZE_T "d positional argument%.1s (%" CYTHON_FORMAT_SSIZE_T "d given)",
                 func_name, more_or_less, num_expected,
                 (num_expected == 1) ? "" : "s", num_found);
}

/* ArgTypeTest */
static int __Pyx__ArgTypeTest(PyObject *obj, PyTypeObject *type, const char *name, int exact)
{
    if (unlikely(!type)) {
        PyErr_SetString(PyExc_SystemError, "Missing type object");
        return 0;
    }
    else if (exact) {
        #if PY_MAJOR_VERSION == 2
        if ((type == &PyBaseString_Type) && likely(__Pyx_PyBaseString_CheckExact(obj))) return 1;
        #endif
    }
    else {
        if (likely(__Pyx_TypeCheck(obj, type))) return 1;
    }
    PyErr_Format(PyExc_TypeError,
        "Argument '%.200s' has incorrect type (expected %.200s, got %.200s)",
        name, type->tp_name, Py_TYPE(obj)->tp_name);
    return 0;
}

/* PyCFunctionFastCall */
#if CYTHON_FAST_PYCCALL
static CYTHON_INLINE PyObject * __Pyx_PyCFunction_FastCall(PyObject *func_obj, PyObject **args, Py_ssize_t nargs) {
    PyCFunctionObject *func = (PyCFunctionObject*)func_obj;
    PyCFunction meth = PyCFunction_GET_FUNCTION(func);
    PyObject *self = PyCFunction_GET_SELF(func);
    int flags = PyCFunction_GET_FLAGS(func);
    assert(PyCFunction_Check(func));
    assert(METH_FASTCALL == (flags & ~(METH_CLASS | METH_STATIC | METH_COEXIST | METH_KEYWORDS | METH_STACKLESS)));
    assert(nargs >= 0);
    assert(nargs == 0 || args != NULL);
    /* _PyCFunction_FastCallDict() must not be called with an exception set,
       because it may clear it (directly or indirectly) and so the
       caller loses its exception */
    assert(!PyErr_Occurred());
    if ((PY_VERSION_HEX < 0x030700A0) || unlikely(flags & METH_KEYWORDS)) {
        return (*((__Pyx_PyCFunctionFastWithKeywords)(void*)meth)) (self, args, nargs, NULL);
    } else {
        return (*((__Pyx_PyCFunctionFast)(void*)meth)) (self, args, nargs);
    }
}
#endif

/* PyFunctionFastCall */
#if CYTHON_FAST_PYCALL
static PyObject* __Pyx_PyFunction_FastCallNoKw(PyCodeObject *co, PyObject **args, Py_ssize_t na,
                                               PyObject *globals) {
    PyFrameObject *f;
    PyThreadState *tstate = __Pyx_PyThreadState_Current;
    PyObject **fastlocals;
    Py_ssize_t i;
    PyObject *result;
    assert(globals != NULL);
    /* XXX Perhaps we should create a specialized
       PyFrame_New() that doesn't take locals, but does
       take builtins without sanity checking them.
       */
    assert(tstate != NULL);
    f = PyFrame_New(tstate, co, globals, NULL);
    if (f == NULL) {
        return NULL;
    }
    fastlocals = __Pyx_PyFrame_GetLocalsplus(f);
    for (i = 0; i < na; i++) {
        Py_INCREF(*args);
        fastlocals[i] = *args++;
    }
    result = PyEval_EvalFrameEx(f,0);
    ++tstate->recursion_depth;
    Py_DECREF(f);
    --tstate->recursion_depth;
    return result;
}
#if 1 || PY_VERSION_HEX < 0x030600B1
static PyObject *__Pyx_PyFunction_FastCallDict(PyObject *func, PyObject **args, Py_ssize_t nargs, PyObject *kwargs) {
    PyCodeObject *co = (PyCodeObject *)PyFunction_GET_CODE(func);
    PyObject *globals = PyFunction_GET_GLOBALS(func);
    PyObject *argdefs = PyFunction_GET_DEFAULTS(func);
    PyObject *closure;
#if PY_MAJOR_VERSION >= 3
    PyObject *kwdefs;
#endif
    PyObject *kwtuple, **k;
    PyObject **d;
    Py_ssize_t nd;
    Py_ssize_t nk;
    PyObject *result;
    assert(kwargs == NULL || PyDict_Check(kwargs));
    nk = kwargs ? PyDict_Size(kwargs) : 0;
    if (Py_EnterRecursiveCall((char*)" while calling a Python object")) {
        return NULL;
    }
    if (
#if PY_MAJOR_VERSION >= 3
            co->co_kwonlyargcount == 0 &&
#endif
            likely(kwargs == NULL || nk == 0) &&
            co->co_flags == (CO_OPTIMIZED | CO_NEWLOCALS | CO_NOFREE)) {
        if (argdefs == NULL && co->co_argcount == nargs) {
            result = __Pyx_PyFunction_FastCallNoKw(co, args, nargs, globals);
            goto done;
        }
        else if (nargs == 0 && argdefs != NULL
                 && co->co_argcount == Py_SIZE(argdefs)) {
            /* function called with no arguments, but all parameters have
               a default value: use default values as arguments .*/
            args = &PyTuple_GET_ITEM(argdefs, 0);
            result =__Pyx_PyFunction_FastCallNoKw(co, args, Py_SIZE(argdefs), globals);
            goto done;
        }
    }
    if (kwargs != NULL) {
        Py_ssize_t pos, i;
        kwtuple = PyTuple_New(2 * nk);
        if (kwtuple == NULL) {
            result = NULL;
            goto done;
        }
        k = &PyTuple_GET_ITEM(kwtuple, 0);
        pos = i = 0;
        while (PyDict_Next(kwargs, &pos, &k[i], &k[i+1])) {
            Py_INCREF(k[i]);
            Py_INCREF(k[i+1]);
            i += 2;
        }
        nk = i / 2;
    }
    else {
        kwtuple = NULL;
        k = NULL;
    }
    closure = PyFunction_GET_CLOSURE(func);
#if PY_MAJOR_VERSION >= 3
    kwdefs = PyFunction_GET_KW_DEFAULTS(func);
#endif
    if (argdefs != NULL) {
        d = &PyTuple_GET_ITEM(argdefs, 0);
        nd = Py_SIZE(argdefs);
    }
    else {
        d = NULL;
        nd = 0;
    }
#if PY_MAJOR_VERSION >= 3
    result = PyEval_EvalCodeEx((PyObject*)co, globals, (PyObject *)NULL,
                               args, (int)nargs,
                               k, (int)nk,
                               d, (int)nd, kwdefs, closure);
#else
    result = PyEval_EvalCodeEx(co, globals, (PyObject *)NULL,
                               args, (int)nargs,
                               k, (int)nk,
                               d, (int)nd, closure);
#endif
    Py_XDECREF(kwtuple);
done:
    Py_LeaveRecursiveCall();
    return result;
}
#endif
#endif

/* PyObjectCall */
#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_Call(PyObject *func, PyObject *arg, PyObject *kw) {
    PyObject *result;
    ternaryfunc call = func->ob_type->tp_call;
    if (unlikely(!call))
        return PyObject_Call(func, arg, kw);
    if (unlikely(Py_EnterRecursiveCall((char*)" while calling a Python object")))
        return NULL;
    result = (*call)(func, arg, kw);
    Py_LeaveRecursiveCall();
    if (unlikely(!result) && unlikely(!PyErr_Occurred())) {
        PyErr_SetString(
            PyExc_SystemError,
            "NULL result without error in PyObject_Call");
    }
    return result;
}
#endif

/* PyObjectCall2Args */
static CYTHON_UNUSED PyObject* __Pyx_PyObject_Call2Args(PyObject* function, PyObject* arg1, PyObject* arg2) {
    PyObject *args, *result = NULL;
    #if CYTHON_FAST_PYCALL
    if (PyFunction_Check(function)) {
        PyObject *args[2] = {arg1, arg2};
        return __Pyx_PyFunction_FastCall(function, args, 2);
    }
    #endif
    #if CYTHON_FAST_PYCCALL
    if (__Pyx_PyFastCFunction_Check(function)) {
        PyObject *args[2] = {arg1, arg2};
        return __Pyx_PyCFunction_FastCall(function, args, 2);
    }
    #endif
    args = PyTuple_New(2);
    if (unlikely(!args)) goto done;
    Py_INCREF(arg1);
    PyTuple_SET_ITEM(args, 0, arg1);
    Py_INCREF(arg2);
    PyTuple_SET_ITEM(args, 1, arg2);
    Py_INCREF(function);
    result = __Pyx_PyObject_Call(function, args, NULL);
    Py_DECREF(args);
    Py_DECREF(function);
done:
    return result;
}

/* PyObjectCallMethO */
#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallMethO(PyObject *func, PyObject *arg) {
    PyObject *self, *result;
    PyCFunction cfunc;
    cfunc = PyCFunction_GET_FUNCTION(func);
    self = PyCFunction_GET_SELF(func);
    if (unlikely(Py_EnterRecursiveCall((char*)" while calling a Python object")))
        return NULL;
    result = cfunc(self, arg);
    Py_LeaveRecursiveCall();
    if (unlikely(!result) && unlikely(!PyErr_Occurred())) {
        PyErr_SetString(
            PyExc_SystemError,
            "NULL result without error in PyObject_Call");
    }
    return result;
}
#endif

/* PyObjectCallOneArg */
#if CYTHON_COMPILING_IN_CPYTHON
static PyObject* __Pyx__PyObject_CallOneArg(PyObject *func, PyObject *arg) {
    PyObject *result;
    PyObject *args = PyTuple_New(1);
    if (unlikely(!args)) return NULL;
    Py_INCREF(arg);
    PyTuple_SET_ITEM(args, 0, arg);
    result = __Pyx_PyObject_Call(func, args, NULL);
    Py_DECREF(args);
    return result;
}
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallOneArg(PyObject *func, PyObject *arg) {
#if CYTHON_FAST_PYCALL
    if (PyFunction_Check(func)) {
        return __Pyx_PyFunction_FastCall(func, &arg, 1);
    }
#endif
    if (likely(PyCFunction_Check(func))) {
        if (likely(PyCFunction_GET_FLAGS(func) & METH_O)) {
            return __Pyx_PyObject_CallMethO(func, arg);
#if CYTHON_FAST_PYCCALL
        } else if (PyCFunction_GET_FLAGS(func) & METH_FASTCALL) {
            return __Pyx_PyCFunction_FastCall(func, &arg, 1);
#endif
        }
    }
    return __Pyx__PyObject_CallOneArg(func, arg);
}
#else
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallOneArg(PyObject *func, PyObject *arg) {
    PyObject *result;
    PyObject *args = PyTuple_Pack(1, arg);
    if (unlikely(!args)) return NULL;
    result = __Pyx_PyObject_Call(func, args, NULL);
    Py_DECREF(args);
    return result;
}
#endif

/* PyObjectGetMethod */
static int __Pyx_PyObject_GetMethod(PyObject *obj, PyObject *name, PyObject **method) {
    PyObject *attr;
#if CYTHON_UNPACK_METHODS && CYTHON_COMPILING_IN_CPYTHON && CYTHON_USE_PYTYPE_LOOKUP
    PyTypeObject *tp = Py_TYPE(obj);
    PyObject *descr;
    descrgetfunc f = NULL;
    PyObject **dictptr, *dict;
    int meth_found = 0;
    assert (*method == NULL);
    if (unlikely(tp->tp_getattro != PyObject_GenericGetAttr)) {
        attr = __Pyx_PyObject_GetAttrStr(obj, name);
        goto try_unpack;
    }
    if (unlikely(tp->tp_dict == NULL) && unlikely(PyType_Ready(tp) < 0)) {
        return 0;
    }
    descr = _PyType_Lookup(tp, name);
    if (likely(descr != NULL)) {
        Py_INCREF(descr);
#if PY_MAJOR_VERSION >= 3
        #ifdef __Pyx_CyFunction_USED
        if (likely(PyFunction_Check(descr) || (Py_TYPE(descr) == &PyMethodDescr_Type) || __Pyx_CyFunction_Check(descr)))
        #else
        if (likely(PyFunction_Check(descr) || (Py_TYPE(descr) == &PyMethodDescr_Type)))
        #endif
#else
        #ifdef __Pyx_CyFunction_USED
        if (likely(PyFunction_Check(descr) || __Pyx_CyFunction_Check(descr)))
        #else
        if (likely(PyFunction_Check(descr)))
        #endif
#endif
        {
            meth_found = 1;
        } else {
            f = Py_TYPE(descr)->tp_descr_get;
            if (f != NULL && PyDescr_IsData(descr)) {
                attr = f(descr, obj, (PyObject *)Py_TYPE(obj));
                Py_DECREF(descr);
                goto try_unpack;
            }
        }
    }
    dictptr = _PyObject_GetDictPtr(obj);
    if (dictptr != NULL && (dict = *dictptr) != NULL) {
        Py_INCREF(dict);
        attr = __Pyx_PyDict_GetItemStr(dict, name);
        if (attr != NULL) {
            Py_INCREF(attr);
            Py_DECREF(dict);
            Py_XDECREF(descr);
            goto try_unpack;
        }
        Py_DECREF(dict);
    }
    if (meth_found) {
        *method = descr;
        return 1;
    }
    if (f != NULL) {
        attr = f(descr, obj, (PyObject *)Py_TYPE(obj));
        Py_DECREF(descr);
        goto try_unpack;
    }
    if (descr != NULL) {
        *method = descr;
        return 0;
    }
    PyErr_Format(PyExc_AttributeError,
#if PY_MAJOR_VERSION >= 3
                 "'%.50s' object has no attribute '%U'",
                 tp->tp_name, name);
#else
                 "'%.50s' object has no attribute '%.400s'",
                 tp->tp_name, PyString_AS_STRING(name));
#endif
    return 0;
#else
    attr = __Pyx_PyObject_GetAttrStr(obj, name);
    goto try_unpack;
#endif
try_unpack:
#if CYTHON_UNPACK_METHODS
    if (likely(attr) && PyMethod_Check(attr) && likely(PyMethod_GET_SELF(attr) == obj)) {
        PyObject *function = PyMethod_GET_FUNCTION(attr);
        Py_INCREF(function);
        Py_DECREF(attr);
        *method = function;
        return 1;
    }
#endif
    *method = attr;
    return 0;
}

/* PyObjectCallMethod1 */
static PyObject* __Pyx__PyObject_CallMethod1(PyObject* method, PyObject* arg) {
    PyObject *result = __Pyx_PyObject_CallOneArg(method, arg);
    Py_DECREF(method);
    return result;
}
static PyObject* __Pyx_PyObject_CallMethod1(PyObject* obj, PyObject* method_name, PyObject* arg) {
    PyObject *method = NULL, *result;
    int is_method = __Pyx_PyObject_GetMethod(obj, method_name, &method);
    if (likely(is_method)) {
        result = __Pyx_PyObject_Call2Args(method, obj, arg);
        Py_DECREF(method);
        return result;
    }
    if (unlikely(!method)) return NULL;
    return __Pyx__PyObject_CallMethod1(method, arg);
}

/* append */
static CYTHON_INLINE int __Pyx_PyObject_Append(PyObject* L, PyObject* x) {
    if (likely(PyList_CheckExact(L))) {
        if (unlikely(__Pyx_PyList_Append(L, x) < 0)) return -1;
    } else {
        PyObject* retval = __Pyx_PyObject_CallMethod1(L, __pyx_n_s_append, x);
        if (unlikely(!retval))
            return -1;
        Py_DECREF(retval);
    }
    return 0;
}

/* GetItemInt */
static PyObject *__Pyx_GetItemInt_Generic(PyObject *o, PyObject* j) {
    PyObject *r;
    if (!j) return NULL;
    r = PyObject_GetItem(o, j);
    Py_DECREF(j);
    return r;
}
static CYTHON_INLINE PyObject *__Pyx_GetItemInt_List_Fast(PyObject *o, Py_ssize_t i,
                                                              CYTHON_NCP_UNUSED int wraparound,
                                                              CYTHON_NCP_UNUSED int boundscheck) {
#if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
    Py_ssize_t wrapped_i = i;
    if (wraparound & unlikely(i < 0)) {
        wrapped_i += PyList_GET_SIZE(o);
    }
    if ((!boundscheck) || likely(__Pyx_is_valid_index(wrapped_i, PyList_GET_SIZE(o)))) {
        PyObject *r = PyList_GET_ITEM(o, wrapped_i);
        Py_INCREF(r);
        return r;
    }
    return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
#else
    return PySequence_GetItem(o, i);
#endif
}
static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Tuple_Fast(PyObject *o, Py_ssize_t i,
                                                              CYTHON_NCP_UNUSED int wraparound,
                                                              CYTHON_NCP_UNUSED int boundscheck) {
#if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
    Py_ssize_t wrapped_i = i;
    if (wraparound & unlikely(i < 0)) {
        wrapped_i += PyTuple_GET_SIZE(o);
    }
    if ((!boundscheck) || likely(__Pyx_is_valid_index(wrapped_i, PyTuple_GET_SIZE(o)))) {
        PyObject *r = PyTuple_GET_ITEM(o, wrapped_i);
        Py_INCREF(r);
        return r;
    }
    return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
#else
    return PySequence_GetItem(o, i);
#endif
}
static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i, int is_list,
                                                     CYTHON_NCP_UNUSED int wraparound,
                                                     CYTHON_NCP_UNUSED int boundscheck) {
#if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS && CYTHON_USE_TYPE_SLOTS
    if (is_list || PyList_CheckExact(o)) {
        Py_ssize_t n = ((!wraparound) | likely(i >= 0)) ? i : i + PyList_GET_SIZE(o);
        if ((!boundscheck) || (likely(__Pyx_is_valid_index(n, PyList_GET_SIZE(o))))) {
            PyObject *r = PyList_GET_ITEM(o, n);
            Py_INCREF(r);
            return r;
        }
    }
    else if (PyTuple_CheckExact(o)) {
        Py_ssize_t n = ((!wraparound) | likely(i >= 0)) ? i : i + PyTuple_GET_SIZE(o);
        if ((!boundscheck) || likely(__Pyx_is_valid_index(n, PyTuple_GET_SIZE(o)))) {
            PyObject *r = PyTuple_GET_ITEM(o, n);
            Py_INCREF(r);
            return r;
        }
    } else {
        PySequenceMethods *m = Py_TYPE(o)->tp_as_sequence;
        if (likely(m && m->sq_item)) {
            if (wraparound && unlikely(i < 0) && likely(m->sq_length)) {
                Py_ssize_t l = m->sq_length(o);
                if (likely(l >= 0)) {
                    i += l;
                } else {
                    if (!PyErr_ExceptionMatches(PyExc_OverflowError))
                        return NULL;
                    PyErr_Clear();
                }
            }
            return m->sq_item(o, i);
        }
    }
#else
    if (is_list || PySequence_Check(o)) {
        return PySequence_GetItem(o, i);
    }
#endif
    return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
}

/* CIntToDigits */
static const char DIGIT_PAIRS_10[2*10*10+1] = {
    "00010203040506070809"
    "10111213141516171819"
    "20212223242526272829"
    "30313233343536373839"
    "40414243444546474849"
    "50515253545556575859"
    "60616263646566676869"
    "70717273747576777879"
    "80818283848586878889"
    "90919293949596979899"
};
static const char DIGIT_PAIRS_8[2*8*8+1] = {
    "0001020304050607"
    "1011121314151617"
    "2021222324252627"
    "3031323334353637"
    "4041424344454647"
    "5051525354555657"
    "6061626364656667"
    "7071727374757677"
};
static const char DIGITS_HEX[2*16+1] = {
    "0123456789abcdef"
    "0123456789ABCDEF"
};

/* BuildPyUnicode */
static PyObject* __Pyx_PyUnicode_BuildFromAscii(Py_ssize_t ulength, char* chars, int clength,
                                                int prepend_sign, char padding_char) {
    PyObject *uval;
    Py_ssize_t uoffset = ulength - clength;
#if CYTHON_USE_UNICODE_INTERNALS
    Py_ssize_t i;
#if CYTHON_PEP393_ENABLED
    void *udata;
    uval = PyUnicode_New(ulength, 127);
    if (unlikely(!uval)) return NULL;
    udata = PyUnicode_DATA(uval);
#else
    Py_UNICODE *udata;
    uval = PyUnicode_FromUnicode(NULL, ulength);
    if (unlikely(!uval)) return NULL;
    udata = PyUnicode_AS_UNICODE(uval);
#endif
    if (uoffset > 0) {
        i = 0;
        if (prepend_sign) {
            __Pyx_PyUnicode_WRITE(PyUnicode_1BYTE_KIND, udata, 0, '-');
            i++;
        }
        for (; i < uoffset; i++) {
            __Pyx_PyUnicode_WRITE(PyUnicode_1BYTE_KIND, udata, i, padding_char);
        }
    }
    for (i=0; i < clength; i++) {
        __Pyx_PyUnicode_WRITE(PyUnicode_1BYTE_KIND, udata, uoffset+i, chars[i]);
    }
#else
    {
        PyObject *sign = NULL, *padding = NULL;
        uval = NULL;
        if (uoffset > 0) {
            prepend_sign = !!prepend_sign;
            if (uoffset > prepend_sign) {
                padding = PyUnicode_FromOrdinal(padding_char);
                if (likely(padding) && uoffset > prepend_sign + 1) {
                    PyObject *tmp;
                    PyObject *repeat = PyInt_FromSize_t(uoffset - prepend_sign);
                    if (unlikely(!repeat)) goto done_or_error;
                    tmp = PyNumber_Multiply(padding, repeat);
                    Py_DECREF(repeat);
                    Py_DECREF(padding);
                    padding = tmp;
                }
                if (unlikely(!padding)) goto done_or_error;
            }
            if (prepend_sign) {
                sign = PyUnicode_FromOrdinal('-');
                if (unlikely(!sign)) goto done_or_error;
            }
        }
        uval = PyUnicode_DecodeASCII(chars, clength, NULL);
        if (likely(uval) && padding) {
            PyObject *tmp = PyNumber_Add(padding, uval);
            Py_DECREF(uval);
            uval = tmp;
        }
        if (likely(uval) && sign) {
            PyObject *tmp = PyNumber_Add(sign, uval);
            Py_DECREF(uval);
            uval = tmp;
        }
done_or_error:
        Py_XDECREF(padding);
        Py_XDECREF(sign);
    }
#endif
    return uval;
}

/* CIntToPyUnicode */
#ifdef _MSC_VER
    #ifndef _MSC_STDINT_H_
        #if _MSC_VER < 1300
           typedef unsigned short    uint16_t;
        #else
           typedef unsigned __int16  uint16_t;
        #endif
    #endif
#else
   #include <stdint.h>
#endif
#if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
#define GCC_DIAGNOSTIC
#endif
static CYTHON_INLINE PyObject* __Pyx_PyUnicode_From_int(int value, Py_ssize_t width, char padding_char, char format_char) {
    char digits[sizeof(int)*3+2];
    char *dpos, *end = digits + sizeof(int)*3+2;
    const char *hex_digits = DIGITS_HEX;
    Py_ssize_t length, ulength;
    int prepend_sign, last_one_off;
    int remaining;
#ifdef GCC_DIAGNOSTIC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
    const int neg_one = (int) -1, const_zero = (int) 0;
#ifdef GCC_DIAGNOSTIC
#pragma GCC diagnostic pop
#endif
    const int is_unsigned = neg_one > const_zero;
    if (format_char == 'X') {
        hex_digits += 16;
        format_char = 'x';
    }
    remaining = value;
    last_one_off = 0;
    dpos = end;
    do {
        int digit_pos;
        switch (format_char) {
        case 'o':
            digit_pos = abs((int)(remaining % (8*8)));
            remaining = (int) (remaining / (8*8));
            dpos -= 2;
            *(uint16_t*)dpos = ((const uint16_t*)DIGIT_PAIRS_8)[digit_pos];
            last_one_off = (digit_pos < 8);
            break;
        case 'd':
            digit_pos = abs((int)(remaining % (10*10)));
            remaining = (int) (remaining / (10*10));
            dpos -= 2;
            *(uint16_t*)dpos = ((const uint16_t*)DIGIT_PAIRS_10)[digit_pos];
            last_one_off = (digit_pos < 10);
            break;
        case 'x':
            *(--dpos) = hex_digits[abs((int)(remaining % 16))];
            remaining = (int) (remaining / 16);
            break;
        default:
            assert(0);
            break;
        }
    } while (unlikely(remaining != 0));
    if (last_one_off) {
        assert(*dpos == '0');
        dpos++;
    }
    length = end - dpos;
    ulength = length;
    prepend_sign = 0;
    if (!is_unsigned && value <= neg_one) {
        if (padding_char == ' ' || width <= length + 1) {
            *(--dpos) = '-';
            ++length;
        } else {
            prepend_sign = 1;
        }
        ++ulength;
    }
    if (width > ulength) {
        ulength = width;
    }
    if (ulength == 1) {
        return PyUnicode_FromOrdinal(*dpos);
    }
    return __Pyx_PyUnicode_BuildFromAscii(ulength, dpos, (int) length, prepend_sign, padding_char);
}

/* JoinPyUnicode */
static PyObject* __Pyx_PyUnicode_Join(PyObject* value_tuple, Py_ssize_t value_count, Py_ssize_t result_ulength,
                                      CYTHON_UNUSED Py_UCS4 max_char) {
#if CYTHON_USE_UNICODE_INTERNALS && CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
    PyObject *result_uval;
    int result_ukind;
    Py_ssize_t i, char_pos;
    void *result_udata;
#if CYTHON_PEP393_ENABLED
    result_uval = PyUnicode_New(result_ulength, max_char);
    if (unlikely(!result_uval)) return NULL;
    result_ukind = (max_char <= 255) ? PyUnicode_1BYTE_KIND : (max_char <= 65535) ? PyUnicode_2BYTE_KIND : PyUnicode_4BYTE_KIND;
    result_udata = PyUnicode_DATA(result_uval);
#else
    result_uval = PyUnicode_FromUnicode(NULL, result_ulength);
    if (unlikely(!result_uval)) return NULL;
    result_ukind = sizeof(Py_UNICODE);
    result_udata = PyUnicode_AS_UNICODE(result_uval);
#endif
    char_pos = 0;
    for (i=0; i < value_count; i++) {
        int ukind;
        Py_ssize_t ulength;
        void *udata;
        PyObject *uval = PyTuple_GET_ITEM(value_tuple, i);
        if (unlikely(__Pyx_PyUnicode_READY(uval)))
            goto bad;
        ulength = __Pyx_PyUnicode_GET_LENGTH(uval);
        if (unlikely(!ulength))
            continue;
        if (unlikely(char_pos + ulength < 0))
            goto overflow;
        ukind = __Pyx_PyUnicode_KIND(uval);
        udata = __Pyx_PyUnicode_DATA(uval);
        if (!CYTHON_PEP393_ENABLED || ukind == result_ukind) {
            memcpy((char *)result_udata + char_pos * result_ukind, udata, (size_t) (ulength * result_ukind));
        } else {
            #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x030300F0 || defined(_PyUnicode_FastCopyCharacters)
            _PyUnicode_FastCopyCharacters(result_uval, char_pos, uval, 0, ulength);
            #else
            Py_ssize_t j;
            for (j=0; j < ulength; j++) {
                Py_UCS4 uchar = __Pyx_PyUnicode_READ(ukind, udata, j);
                __Pyx_PyUnicode_WRITE(result_ukind, result_udata, char_pos+j, uchar);
            }
            #endif
        }
        char_pos += ulength;
    }
    return result_uval;
overflow:
    PyErr_SetString(PyExc_OverflowError, "join() result is too long for a Python string");
bad:
    Py_DECREF(result_uval);
    return NULL;
#else
    result_ulength++;
    value_count++;
    return PyUnicode_Join(__pyx_empty_unicode, value_tuple);
#endif
}

/* PyErrFetchRestore */
#if CYTHON_FAST_THREAD_STATE
static CYTHON_INLINE void __Pyx_ErrRestoreInState(PyThreadState *tstate, PyObject *type, PyObject *value, PyObject *tb) {
    PyObject *tmp_type, *tmp_value, *tmp_tb;
    tmp_type = tstate->curexc_type;
    tmp_value = tstate->curexc_value;
    tmp_tb = tstate->curexc_traceback;
    tstate->curexc_type = type;
    tstate->curexc_value = value;
    tstate->curexc_traceback = tb;
    Py_XDECREF(tmp_type);
    Py_XDECREF(tmp_value);
    Py_XDECREF(tmp_tb);
}
static CYTHON_INLINE void __Pyx_ErrFetchInState(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb) {
    *type = tstate->curexc_type;
    *value = tstate->curexc_value;
    *tb = tstate->curexc_traceback;
    tstate->curexc_type = 0;
    tstate->curexc_value = 0;
    tstate->curexc_traceback = 0;
}
#endif

/* RaiseException */
#if PY_MAJOR_VERSION < 3
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb,
                        CYTHON_UNUSED PyObject *cause) {
    __Pyx_PyThreadState_declare
    Py_XINCREF(type);
    if (!value || value == Py_None)
        value = NULL;
    else
        Py_INCREF(value);
    if (!tb || tb == Py_None)
        tb = NULL;
    else {
        Py_INCREF(tb);
        if (!PyTraceBack_Check(tb)) {
            PyErr_SetString(PyExc_TypeError,
                "raise: arg 3 must be a traceback or None");
            goto raise_error;
        }
    }
    if (PyType_Check(type)) {
#if CYTHON_COMPILING_IN_PYPY
        if (!value) {
            Py_INCREF(Py_None);
            value = Py_None;
        }
#endif
        PyErr_NormalizeException(&type, &value, &tb);
    } else {
        if (value) {
            PyErr_SetString(PyExc_TypeError,
                "instance exception may not have a separate value");
            goto raise_error;
        }
        value = type;
        type = (PyObject*) Py_TYPE(type);
        Py_INCREF(type);
        if (!PyType_IsSubtype((PyTypeObject *)type, (PyTypeObject *)PyExc_BaseException)) {
            PyErr_SetString(PyExc_TypeError,
                "raise: exception class must be a subclass of BaseException");
            goto raise_error;
        }
    }
    __Pyx_PyThreadState_assign
    __Pyx_ErrRestore(type, value, tb);
    return;
raise_error:
    Py_XDECREF(value);
    Py_XDECREF(type);
    Py_XDECREF(tb);
    return;
}
#else
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject *cause) {
    PyObject* owned_instance = NULL;
    if (tb == Py_None) {
        tb = 0;
    } else if (tb && !PyTraceBack_Check(tb)) {
        PyErr_SetString(PyExc_TypeError,
            "raise: arg 3 must be a traceback or None");
        goto bad;
    }
    if (value == Py_None)
        value = 0;
    if (PyExceptionInstance_Check(type)) {
        if (value) {
            PyErr_SetString(PyExc_TypeError,
                "instance exception may not have a separate value");
            goto bad;
        }
        value = type;
        type = (PyObject*) Py_TYPE(value);
    } else if (PyExceptionClass_Check(type)) {
        PyObject *instance_class = NULL;
        if (value && PyExceptionInstance_Check(value)) {
            instance_class = (PyObject*) Py_TYPE(value);
            if (instance_class != type) {
                int is_subclass = PyObject_IsSubclass(instance_class, type);
                if (!is_subclass) {
                    instance_class = NULL;
                } else if (unlikely(is_subclass == -1)) {
                    goto bad;
                } else {
                    type = instance_class;
                }
            }
        }
        if (!instance_class) {
            PyObject *args;
            if (!value)
                args = PyTuple_New(0);
            else if (PyTuple_Check(value)) {
                Py_INCREF(value);
                args = value;
            } else
                args = PyTuple_Pack(1, value);
            if (!args)
                goto bad;
            owned_instance = PyObject_Call(type, args, NULL);
            Py_DECREF(args);
            if (!owned_instance)
                goto bad;
            value = owned_instance;
            if (!PyExceptionInstance_Check(value)) {
                PyErr_Format(PyExc_TypeError,
                             "calling %R should have returned an instance of "
                             "BaseException, not %R",
                             type, Py_TYPE(value));
                goto bad;
            }
        }
    } else {
        PyErr_SetString(PyExc_TypeError,
            "raise: exception class must be a subclass of BaseException");
        goto bad;
    }
    if (cause) {
        PyObject *fixed_cause;
        if (cause == Py_None) {
            fixed_cause = NULL;
        } else if (PyExceptionClass_Check(cause)) {
            fixed_cause = PyObject_CallObject(cause, NULL);
            if (fixed_cause == NULL)
                goto bad;
        } else if (PyExceptionInstance_Check(cause)) {
            fixed_cause = cause;
            Py_INCREF(fixed_cause);
        } else {
            PyErr_SetString(PyExc_TypeError,
                            "exception causes must derive from "
                            "BaseException");
            goto bad;
        }
        PyException_SetCause(value, fixed_cause);
    }
    PyErr_SetObject(type, value);
    if (tb) {
#if CYTHON_COMPILING_IN_PYPY
        PyObject *tmp_type, *tmp_value, *tmp_tb;
        PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
        Py_INCREF(tb);
        PyErr_Restore(tmp_type, tmp_value, tb);
        Py_XDECREF(tmp_tb);
#else
        PyThreadState *tstate = __Pyx_PyThreadState_Current;
        PyObject* tmp_tb = tstate->curexc_traceback;
        if (tb != tmp_tb) {
            Py_INCREF(tb);
            tstate->curexc_traceback = tb;
            Py_XDECREF(tmp_tb);
        }
#endif
    }
bad:
    Py_XDECREF(owned_instance);
    return;
}
#endif

/* SetItemInt */
static int __Pyx_SetItemInt_Generic(PyObject *o, PyObject *j, PyObject *v) {
    int r;
    if (!j) return -1;
    r = PyObject_SetItem(o, j, v);
    Py_DECREF(j);
    return r;
}
static CYTHON_INLINE int __Pyx_SetItemInt_Fast(PyObject *o, Py_ssize_t i, PyObject *v, int is_list,
                                               CYTHON_NCP_UNUSED int wraparound, CYTHON_NCP_UNUSED int boundscheck) {
#if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS && CYTHON_USE_TYPE_SLOTS
    if (is_list || PyList_CheckExact(o)) {
        Py_ssize_t n = (!wraparound) ? i : ((likely(i >= 0)) ? i : i + PyList_GET_SIZE(o));
        if ((!boundscheck) || likely(__Pyx_is_valid_index(n, PyList_GET_SIZE(o)))) {
            PyObject* old = PyList_GET_ITEM(o, n);
            Py_INCREF(v);
            PyList_SET_ITEM(o, n, v);
            Py_DECREF(old);
            return 1;
        }
    } else {
        PySequenceMethods *m = Py_TYPE(o)->tp_as_sequence;
        if (likely(m && m->sq_ass_item)) {
            if (wraparound && unlikely(i < 0) && likely(m->sq_length)) {
                Py_ssize_t l = m->sq_length(o);
                if (likely(l >= 0)) {
                    i += l;
                } else {
                    if (!PyErr_ExceptionMatches(PyExc_OverflowError))
                        return -1;
                    PyErr_Clear();
                }
            }
            return m->sq_ass_item(o, i, v);
        }
    }
#else
#if CYTHON_COMPILING_IN_PYPY
    if (is_list || (PySequence_Check(o) && !PyDict_Check(o)))
#else
    if (is_list || PySequence_Check(o))
#endif
    {
        return PySequence_SetItem(o, i, v);
    }
#endif
    return __Pyx_SetItemInt_Generic(o, PyInt_FromSsize_t(i), v);
}

/* DictGetItem */
#if PY_MAJOR_VERSION >= 3 && !CYTHON_COMPILING_IN_PYPY
static PyObject *__Pyx_PyDict_GetItem(PyObject *d, PyObject* key) {
    PyObject *value;
    value = PyDict_GetItemWithError(d, key);
    if (unlikely(!value)) {
        if (!PyErr_Occurred()) {
            if (unlikely(PyTuple_Check(key))) {
                PyObject* args = PyTuple_Pack(1, key);
                if (likely(args)) {
                    PyErr_SetObject(PyExc_KeyError, args);
                    Py_DECREF(args);
                }
            } else {
                PyErr_SetObject(PyExc_KeyError, key);
            }
        }
        return NULL;
    }
    Py_INCREF(value);
    return value;
}
#endif

/* ObjectGetItem */
#if CYTHON_USE_TYPE_SLOTS
static PyObject *__Pyx_PyObject_GetIndex(PyObject *obj, PyObject* index) {
    PyObject *runerr;
    Py_ssize_t key_value;
    PySequenceMethods *m = Py_TYPE(obj)->tp_as_sequence;
    if (unlikely(!(m && m->sq_item))) {
        PyErr_Format(PyExc_TypeError, "'%.200s' object is not subscriptable", Py_TYPE(obj)->tp_name);
        return NULL;
    }
    key_value = __Pyx_PyIndex_AsSsize_t(index);
    if (likely(key_value != -1 || !(runerr = PyErr_Occurred()))) {
        return __Pyx_GetItemInt_Fast(obj, key_value, 0, 1, 1);
    }
    if (PyErr_GivenExceptionMatches(runerr, PyExc_OverflowError)) {
        PyErr_Clear();
        PyErr_Format(PyExc_IndexError, "cannot fit '%.200s' into an index-sized integer", Py_TYPE(index)->tp_name);
    }
    return NULL;
}
static PyObject *__Pyx_PyObject_GetItem(PyObject *obj, PyObject* key) {
    PyMappingMethods *m = Py_TYPE(obj)->tp_as_mapping;
    if (likely(m && m->mp_subscript)) {
        return m->mp_subscript(obj, key);
    }
    return __Pyx_PyObject_GetIndex(obj, key);
}
#endif

/* PyDictVersioning */
#if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_TYPE_SLOTS
static CYTHON_INLINE PY_UINT64_T __Pyx_get_tp_dict_version(PyObject *obj) {
    PyObject *dict = Py_TYPE(obj)->tp_dict;
    return likely(dict) ? __PYX_GET_DICT_VERSION(dict) : 0;
}
static CYTHON_INLINE PY_UINT64_T __Pyx_get_object_dict_version(PyObject *obj) {
    PyObject **dictptr = NULL;
    Py_ssize_t offset = Py_TYPE(obj)->tp_dictoffset;
    if (offset) {
#if CYTHON_COMPILING_IN_CPYTHON
        dictptr = (likely(offset > 0)) ? (PyObject **) ((char *)obj + offset) : _PyObject_GetDictPtr(obj);
#else
        dictptr = _PyObject_GetDictPtr(obj);
#endif
    }
    return (dictptr && *dictptr) ? __PYX_GET_DICT_VERSION(*dictptr) : 0;
}
static CYTHON_INLINE int __Pyx_object_dict_version_matches(PyObject* obj, PY_UINT64_T tp_dict_version, PY_UINT64_T obj_dict_version) {
    PyObject *dict = Py_TYPE(obj)->tp_dict;
    if (unlikely(!dict) || unlikely(tp_dict_version != __PYX_GET_DICT_VERSION(dict)))
        return 0;
    return obj_dict_version == __Pyx_get_object_dict_version(obj);
}
#endif

/* GetModuleGlobalName */
#if CYTHON_USE_DICT_VERSIONS
static PyObject *__Pyx__GetModuleGlobalName(PyObject *name, PY_UINT64_T *dict_version, PyObject **dict_cached_value)
#else
static CYTHON_INLINE PyObject *__Pyx__GetModuleGlobalName(PyObject *name)
#endif
{
    PyObject *result;
#if !CYTHON_AVOID_BORROWED_REFS
#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x030500A1
    result = _PyDict_GetItem_KnownHash(__pyx_d, name, ((PyASCIIObject *) name)->hash);
    __PYX_UPDATE_DICT_CACHE(__pyx_d, result, *dict_cached_value, *dict_version)
    if (likely(result)) {
        return __Pyx_NewRef(result);
    } else if (unlikely(PyErr_Occurred())) {
        return NULL;
    }
#else
    result = PyDict_GetItem(__pyx_d, name);
    __PYX_UPDATE_DICT_CACHE(__pyx_d, result, *dict_cached_value, *dict_version)
    if (likely(result)) {
        return __Pyx_NewRef(result);
    }
#endif
#else
    result = PyObject_GetItem(__pyx_d, name);
    __PYX_UPDATE_DICT_CACHE(__pyx_d, result, *dict_cached_value, *dict_version)
    if (likely(result)) {
        return __Pyx_NewRef(result);
    }
    PyErr_Clear();
#endif
    return __Pyx_GetBuiltinName(name);
}

/* IterFinish */
static CYTHON_INLINE int __Pyx_IterFinish(void) {
#if CYTHON_FAST_THREAD_STATE
    PyThreadState *tstate = __Pyx_PyThreadState_Current;
    PyObject* exc_type = tstate->curexc_type;
    if (unlikely(exc_type)) {
        if (likely(__Pyx_PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))) {
            PyObject *exc_value, *exc_tb;
            exc_value = tstate->curexc_value;
            exc_tb = tstate->curexc_traceback;
            tstate->curexc_type = 0;
            tstate->curexc_value = 0;
            tstate->curexc_traceback = 0;
            Py_DECREF(exc_type);
            Py_XDECREF(exc_value);
            Py_XDECREF(exc_tb);
            return 0;
        } else {
            return -1;
        }
    }
    return 0;
#else
    if (unlikely(PyErr_Occurred())) {
        if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) {
            PyErr_Clear();
            return 0;
        } else {
            return -1;
        }
    }
    return 0;
#endif
}

/* set_iter */
static CYTHON_INLINE PyObject* __Pyx_set_iterator(PyObject* iterable, int is_set,
                                                  Py_ssize_t* p_orig_length, int* p_source_is_set) {
#if CYTHON_COMPILING_IN_CPYTHON
    is_set = is_set || likely(PySet_CheckExact(iterable) || PyFrozenSet_CheckExact(iterable));
    *p_source_is_set = is_set;
    if (likely(is_set)) {
        *p_orig_length = PySet_Size(iterable);
        Py_INCREF(iterable);
        return iterable;
    }
#else
    (void)is_set;
    *p_source_is_set = 0;
#endif
    *p_orig_length = 0;
    return PyObject_GetIter(iterable);
}
static CYTHON_INLINE int __Pyx_set_iter_next(
        PyObject* iter_obj, Py_ssize_t orig_length,
        Py_ssize_t* ppos, PyObject **value,
        int source_is_set) {
    if (!CYTHON_COMPILING_IN_CPYTHON || unlikely(!source_is_set)) {
        *value = PyIter_Next(iter_obj);
        if (unlikely(!*value)) {
            return __Pyx_IterFinish();
        }
        (void)orig_length;
        (void)ppos;
        return 1;
    }
#if CYTHON_COMPILING_IN_CPYTHON
    if (unlikely(PySet_GET_SIZE(iter_obj) != orig_length)) {
        PyErr_SetString(
            PyExc_RuntimeError,
            "set changed size during iteration");
        return -1;
    }
    {
        Py_hash_t hash;
        int ret = _PySet_NextEntry(iter_obj, ppos, value, &hash);
        assert (ret != -1);
        if (likely(ret)) {
            Py_INCREF(*value);
            return 1;
        }
    }
#endif
    return 0;
}

/* GetTopmostException */
#if CYTHON_USE_EXC_INFO_STACK
static _PyErr_StackItem *
__Pyx_PyErr_GetTopmostException(PyThreadState *tstate)
{
    _PyErr_StackItem *exc_info = tstate->exc_info;
    while ((exc_info->exc_type == NULL || exc_info->exc_type == Py_None) &&
           exc_info->previous_item != NULL)
    {
        exc_info = exc_info->previous_item;
    }
    return exc_info;
}
#endif

/* SaveResetException */
#if CYTHON_FAST_THREAD_STATE
static CYTHON_INLINE void __Pyx__ExceptionSave(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb) {
    #if CYTHON_USE_EXC_INFO_STACK
    _PyErr_StackItem *exc_info = __Pyx_PyErr_GetTopmostException(tstate);
    *type = exc_info->exc_type;
    *value = exc_info->exc_value;
    *tb = exc_info->exc_traceback;
    #else
    *type = tstate->exc_type;
    *value = tstate->exc_value;
    *tb = tstate->exc_traceback;
    #endif
    Py_XINCREF(*type);
    Py_XINCREF(*value);
    Py_XINCREF(*tb);
}
static CYTHON_INLINE void __Pyx__ExceptionReset(PyThreadState *tstate, PyObject *type, PyObject *value, PyObject *tb) {
    PyObject *tmp_type, *tmp_value, *tmp_tb;
    #if CYTHON_USE_EXC_INFO_STACK
    _PyErr_StackItem *exc_info = tstate->exc_info;
    tmp_type = exc_info->exc_type;
    tmp_value = exc_info->exc_value;
    tmp_tb = exc_info->exc_traceback;
    exc_info->exc_type = type;
    exc_info->exc_value = value;
    exc_info->exc_traceback = tb;
    #else
    tmp_type = tstate->exc_type;
    tmp_value = tstate->exc_value;
    tmp_tb = tstate->exc_traceback;
    tstate->exc_type = type;
    tstate->exc_value = value;
    tstate->exc_traceback = tb;
    #endif
    Py_XDECREF(tmp_type);
    Py_XDECREF(tmp_value);
    Py_XDECREF(tmp_tb);
}
#endif

/* PyErrExceptionMatches */
#if CYTHON_FAST_THREAD_STATE
static int __Pyx_PyErr_ExceptionMatchesTuple(PyObject *exc_type, PyObject *tuple) {
    Py_ssize_t i, n;
    n = PyTuple_GET_SIZE(tuple);
#if PY_MAJOR_VERSION >= 3
    for (i=0; i<n; i++) {
        if (exc_type == PyTuple_GET_ITEM(tuple, i)) return 1;
    }
#endif
    for (i=0; i<n; i++) {
        if (__Pyx_PyErr_GivenExceptionMatches(exc_type, PyTuple_GET_ITEM(tuple, i))) return 1;
    }
    return 0;
}
static CYTHON_INLINE int __Pyx_PyErr_ExceptionMatchesInState(PyThreadState* tstate, PyObject* err) {
    PyObject *exc_type = tstate->curexc_type;
    if (exc_type == err) return 1;
    if (unlikely(!exc_type)) return 0;
    if (unlikely(PyTuple_Check(err)))
        return __Pyx_PyErr_ExceptionMatchesTuple(exc_type, err);
    return __Pyx_PyErr_GivenExceptionMatches(exc_type, err);
}
#endif

/* GetException */
#if CYTHON_FAST_THREAD_STATE
static int __Pyx__GetException(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb)
#else
static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb)
#endif
{
    PyObject *local_type, *local_value, *local_tb;
#if CYTHON_FAST_THREAD_STATE
    PyObject *tmp_type, *tmp_value, *tmp_tb;
    local_type = tstate->curexc_type;
    local_value = tstate->curexc_value;
    local_tb = tstate->curexc_traceback;
    tstate->curexc_type = 0;
    tstate->curexc_value = 0;
    tstate->curexc_traceback = 0;
#else
    PyErr_Fetch(&local_type, &local_value, &local_tb);
#endif
    PyErr_NormalizeException(&local_type, &local_value, &local_tb);
#if CYTHON_FAST_THREAD_STATE
    if (unlikely(tstate->curexc_type))
#else
    if (unlikely(PyErr_Occurred()))
#endif
        goto bad;
    #if PY_MAJOR_VERSION >= 3
    if (local_tb) {
        if (unlikely(PyException_SetTraceback(local_value, local_tb) < 0))
            goto bad;
    }
    #endif
    Py_XINCREF(local_tb);
    Py_XINCREF(local_type);
    Py_XINCREF(local_value);
    *type = local_type;
    *value = local_value;
    *tb = local_tb;
#if CYTHON_FAST_THREAD_STATE
    #if CYTHON_USE_EXC_INFO_STACK
    {
        _PyErr_StackItem *exc_info = tstate->exc_info;
        tmp_type = exc_info->exc_type;
        tmp_value = exc_info->exc_value;
        tmp_tb = exc_info->exc_traceback;
        exc_info->exc_type = local_type;
        exc_info->exc_value = local_value;
        exc_info->exc_traceback = local_tb;
    }
    #else
    tmp_type = tstate->exc_type;
    tmp_value = tstate->exc_value;
    tmp_tb = tstate->exc_traceback;
    tstate->exc_type = local_type;
    tstate->exc_value = local_value;
    tstate->exc_traceback = local_tb;
    #endif
    Py_XDECREF(tmp_type);
    Py_XDECREF(tmp_value);
    Py_XDECREF(tmp_tb);
#else
    PyErr_SetExcInfo(local_type, local_value, local_tb);
#endif
    return 0;
bad:
    *type = 0;
    *value = 0;
    *tb = 0;
    Py_XDECREF(local_type);
    Py_XDECREF(local_value);
    Py_XDECREF(local_tb);
    return -1;
}

/* pop_index */
static PyObject* __Pyx__PyObject_PopNewIndex(PyObject* L, PyObject* py_ix) {
    PyObject *r;
    if (unlikely(!py_ix)) return NULL;
    r = __Pyx__PyObject_PopIndex(L, py_ix);
    Py_DECREF(py_ix);
    return r;
}
static PyObject* __Pyx__PyObject_PopIndex(PyObject* L, PyObject* py_ix) {
    return __Pyx_PyObject_CallMethod1(L, __pyx_n_s_pop, py_ix);
}
#if CYTHON_USE_PYLIST_INTERNALS && CYTHON_ASSUME_SAFE_MACROS
static PyObject* __Pyx__PyList_PopIndex(PyObject* L, PyObject* py_ix, Py_ssize_t ix) {
    Py_ssize_t size = PyList_GET_SIZE(L);
    if (likely(size > (((PyListObject*)L)->allocated >> 1))) {
        Py_ssize_t cix = ix;
        if (cix < 0) {
            cix += size;
        }
        if (likely(__Pyx_is_valid_index(cix, size))) {
            PyObject* v = PyList_GET_ITEM(L, cix);
            __Pyx_SET_SIZE(L, Py_SIZE(L) - 1);
            size -= 1;
            memmove(&PyList_GET_ITEM(L, cix), &PyList_GET_ITEM(L, cix+1), (size_t)(size-cix)*sizeof(PyObject*));
            return v;
        }
    }
    if (py_ix == Py_None) {
        return __Pyx__PyObject_PopNewIndex(L, PyInt_FromSsize_t(ix));
    } else {
        return __Pyx__PyObject_PopIndex(L, py_ix);
    }
}
#endif

/* PyObjectCallNoArg */
#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallNoArg(PyObject *func) {
#if CYTHON_FAST_PYCALL
    if (PyFunction_Check(func)) {
        return __Pyx_PyFunction_FastCall(func, NULL, 0);
    }
#endif
#ifdef __Pyx_CyFunction_USED
    if (likely(PyCFunction_Check(func) || __Pyx_CyFunction_Check(func)))
#else
    if (likely(PyCFunction_Check(func)))
#endif
    {
        if (likely(PyCFunction_GET_FLAGS(func) & METH_NOARGS)) {
            return __Pyx_PyObject_CallMethO(func, NULL);
        }
    }
    return __Pyx_PyObject_Call(func, __pyx_empty_tuple, NULL);
}
#endif

/* PyObjectCallMethod0 */
static PyObject* __Pyx_PyObject_CallMethod0(PyObject* obj, PyObject* method_name) {
    PyObject *method = NULL, *result = NULL;
    int is_method = __Pyx_PyObject_GetMethod(obj, method_name, &method);
    if (likely(is_method)) {
        result = __Pyx_PyObject_CallOneArg(method, obj);
        Py_DECREF(method);
        return result;
    }
    if (unlikely(!method)) goto bad;
    result = __Pyx_PyObject_CallNoArg(method);
    Py_DECREF(method);
bad:
    return result;
}

/* RaiseNeedMoreValuesToUnpack */
static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index) {
    PyErr_Format(PyExc_ValueError,
                 "need more than %" CYTHON_FORMAT_SSIZE_T "d value%.1s to unpack",
                 index, (index == 1) ? "" : "s");
}

/* RaiseTooManyValuesToUnpack */
static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected) {
    PyErr_Format(PyExc_ValueError,
                 "too many values to unpack (expected %" CYTHON_FORMAT_SSIZE_T "d)", expected);
}

/* UnpackItemEndCheck */
static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected) {
    if (unlikely(retval)) {
        Py_DECREF(retval);
        __Pyx_RaiseTooManyValuesError(expected);
        return -1;
    } else {
        return __Pyx_IterFinish();
    }
    return 0;
}

/* RaiseNoneIterError */
static CYTHON_INLINE void __Pyx_RaiseNoneNotIterableError(void) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable");
}

/* UnpackTupleError */
static void __Pyx_UnpackTupleError(PyObject *t, Py_ssize_t index) {
    if (t == Py_None) {
      __Pyx_RaiseNoneNotIterableError();
    } else if (PyTuple_GET_SIZE(t) < index) {
      __Pyx_RaiseNeedMoreValuesError(PyTuple_GET_SIZE(t));
    } else {
      __Pyx_RaiseTooManyValuesError(index);
    }
}

/* UnpackTuple2 */
static CYTHON_INLINE int __Pyx_unpack_tuple2_exact(
        PyObject* tuple, PyObject** pvalue1, PyObject** pvalue2, int decref_tuple) {
    PyObject *value1 = NULL, *value2 = NULL;
#if CYTHON_COMPILING_IN_PYPY
    value1 = PySequence_ITEM(tuple, 0);  if (unlikely(!value1)) goto bad;
    value2 = PySequence_ITEM(tuple, 1);  if (unlikely(!value2)) goto bad;
#else
    value1 = PyTuple_GET_ITEM(tuple, 0);  Py_INCREF(value1);
    value2 = PyTuple_GET_ITEM(tuple, 1);  Py_INCREF(value2);
#endif
    if (decref_tuple) {
        Py_DECREF(tuple);
    }
    *pvalue1 = value1;
    *pvalue2 = value2;
    return 0;
#if CYTHON_COMPILING_IN_PYPY
bad:
    Py_XDECREF(value1);
    Py_XDECREF(value2);
    if (decref_tuple) { Py_XDECREF(tuple); }
    return -1;
#endif
}
static int __Pyx_unpack_tuple2_generic(PyObject* tuple, PyObject** pvalue1, PyObject** pvalue2,
                                       int has_known_size, int decref_tuple) {
    Py_ssize_t index;
    PyObject *value1 = NULL, *value2 = NULL, *iter = NULL;
    iternextfunc iternext;
    iter = PyObject_GetIter(tuple);
    if (unlikely(!iter)) goto bad;
    if (decref_tuple) { Py_DECREF(tuple); tuple = NULL; }
    iternext = Py_TYPE(iter)->tp_iternext;
    value1 = iternext(iter); if (unlikely(!value1)) { index = 0; goto unpacking_failed; }
    value2 = iternext(iter); if (unlikely(!value2)) { index = 1; goto unpacking_failed; }
    if (!has_known_size && unlikely(__Pyx_IternextUnpackEndCheck(iternext(iter), 2))) goto bad;
    Py_DECREF(iter);
    *pvalue1 = value1;
    *pvalue2 = value2;
    return 0;
unpacking_failed:
    if (!has_known_size && __Pyx_IterFinish() == 0)
        __Pyx_RaiseNeedMoreValuesError(index);
bad:
    Py_XDECREF(iter);
    Py_XDECREF(value1);
    Py_XDECREF(value2);
    if (decref_tuple) { Py_XDECREF(tuple); }
    return -1;
}

/* dict_iter */
static CYTHON_INLINE PyObject* __Pyx_dict_iterator(PyObject* iterable, int is_dict, PyObject* method_name,
                                                   Py_ssize_t* p_orig_length, int* p_source_is_dict) {
    is_dict = is_dict || likely(PyDict_CheckExact(iterable));
    *p_source_is_dict = is_dict;
    if (is_dict) {
#if !CYTHON_COMPILING_IN_PYPY
        *p_orig_length = PyDict_Size(iterable);
        Py_INCREF(iterable);
        return iterable;
#elif PY_MAJOR_VERSION >= 3
        static PyObject *py_items = NULL, *py_keys = NULL, *py_values = NULL;
        PyObject **pp = NULL;
        if (method_name) {
            const char *name = PyUnicode_AsUTF8(method_name);
            if (strcmp(name, "iteritems") == 0) pp = &py_items;
            else if (strcmp(name, "iterkeys") == 0) pp = &py_keys;
            else if (strcmp(name, "itervalues") == 0) pp = &py_values;
            if (pp) {
                if (!*pp) {
                    *pp = PyUnicode_FromString(name + 4);
                    if (!*pp)
                        return NULL;
                }
                method_name = *pp;
            }
        }
#endif
    }
    *p_orig_length = 0;
    if (method_name) {
        PyObject* iter;
        iterable = __Pyx_PyObject_CallMethod0(iterable, method_name);
        if (!iterable)
            return NULL;
#if !CYTHON_COMPILING_IN_PYPY
        if (PyTuple_CheckExact(iterable) || PyList_CheckExact(iterable))
            return iterable;
#endif
        iter = PyObject_GetIter(iterable);
        Py_DECREF(iterable);
        return iter;
    }
    return PyObject_GetIter(iterable);
}
static CYTHON_INLINE int __Pyx_dict_iter_next(
        PyObject* iter_obj, CYTHON_NCP_UNUSED Py_ssize_t orig_length, CYTHON_NCP_UNUSED Py_ssize_t* ppos,
        PyObject** pkey, PyObject** pvalue, PyObject** pitem, int source_is_dict) {
    PyObject* next_item;
#if !CYTHON_COMPILING_IN_PYPY
    if (source_is_dict) {
        PyObject *key, *value;
        if (unlikely(orig_length != PyDict_Size(iter_obj))) {
            PyErr_SetString(PyExc_RuntimeError, "dictionary changed size during iteration");
            return -1;
        }
        if (unlikely(!PyDict_Next(iter_obj, ppos, &key, &value))) {
            return 0;
        }
        if (pitem) {
            PyObject* tuple = PyTuple_New(2);
            if (unlikely(!tuple)) {
                return -1;
            }
            Py_INCREF(key);
            Py_INCREF(value);
            PyTuple_SET_ITEM(tuple, 0, key);
            PyTuple_SET_ITEM(tuple, 1, value);
            *pitem = tuple;
        } else {
            if (pkey) {
                Py_INCREF(key);
                *pkey = key;
            }
            if (pvalue) {
                Py_INCREF(value);
                *pvalue = value;
            }
        }
        return 1;
    } else if (PyTuple_CheckExact(iter_obj)) {
        Py_ssize_t pos = *ppos;
        if (unlikely(pos >= PyTuple_GET_SIZE(iter_obj))) return 0;
        *ppos = pos + 1;
        next_item = PyTuple_GET_ITEM(iter_obj, pos);
        Py_INCREF(next_item);
    } else if (PyList_CheckExact(iter_obj)) {
        Py_ssize_t pos = *ppos;
        if (unlikely(pos >= PyList_GET_SIZE(iter_obj))) return 0;
        *ppos = pos + 1;
        next_item = PyList_GET_ITEM(iter_obj, pos);
        Py_INCREF(next_item);
    } else
#endif
    {
        next_item = PyIter_Next(iter_obj);
        if (unlikely(!next_item)) {
            return __Pyx_IterFinish();
        }
    }
    if (pitem) {
        *pitem = next_item;
    } else if (pkey && pvalue) {
        if (__Pyx_unpack_tuple2(next_item, pkey, pvalue, source_is_dict, source_is_dict, 1))
            return -1;
    } else if (pkey) {
        *pkey = next_item;
    } else {
        *pvalue = next_item;
    }
    return 1;
}

/* CallNextTpDealloc */
static void __Pyx_call_next_tp_dealloc(PyObject* obj, destructor current_tp_dealloc) {
    PyTypeObject* type = Py_TYPE(obj);
    while (type && type->tp_dealloc != current_tp_dealloc)
        type = type->tp_base;
    while (type && type->tp_dealloc == current_tp_dealloc)
        type = type->tp_base;
    if (type)
        type->tp_dealloc(obj);
}

/* CallNextTpTraverse */
static int __Pyx_call_next_tp_traverse(PyObject* obj, visitproc v, void *a, traverseproc current_tp_traverse) {
    PyTypeObject* type = Py_TYPE(obj);
    while (type && type->tp_traverse != current_tp_traverse)
        type = type->tp_base;
    while (type && type->tp_traverse == current_tp_traverse)
        type = type->tp_base;
    if (type && type->tp_traverse)
        return type->tp_traverse(obj, v, a);
    return 0;
}

/* CallNextTpClear */
static void __Pyx_call_next_tp_clear(PyObject* obj, inquiry current_tp_clear) {
    PyTypeObject* type = Py_TYPE(obj);
    while (type && type->tp_clear != current_tp_clear)
        type = type->tp_base;
    while (type && type->tp_clear == current_tp_clear)
        type = type->tp_base;
    if (type && type->tp_clear)
        type->tp_clear(obj);
}

/* TypeImport */
#ifndef __PYX_HAVE_RT_ImportType
#define __PYX_HAVE_RT_ImportType
static PyTypeObject *__Pyx_ImportType(PyObject *module, const char *module_name, const char *class_name,
    size_t size, enum __Pyx_ImportType_CheckSize check_size)
{
    PyObject *result = 0;
    char warning[200];
    Py_ssize_t basicsize;
#ifdef Py_LIMITED_API
    PyObject *py_basicsize;
#endif
    result = PyObject_GetAttrString(module, class_name);
    if (!result)
        goto bad;
    if (!PyType_Check(result)) {
        PyErr_Format(PyExc_TypeError,
            "%.200s.%.200s is not a type object",
            module_name, class_name);
        goto bad;
    }
#ifndef Py_LIMITED_API
    basicsize = ((PyTypeObject *)result)->tp_basicsize;
#else
    py_basicsize = PyObject_GetAttrString(result, "__basicsize__");
    if (!py_basicsize)
        goto bad;
    basicsize = PyLong_AsSsize_t(py_basicsize);
    Py_DECREF(py_basicsize);
    py_basicsize = 0;
    if (basicsize == (Py_ssize_t)-1 && PyErr_Occurred())
        goto bad;
#endif
    if ((size_t)basicsize < size) {
        PyErr_Format(PyExc_ValueError,
            "%.200s.%.200s size changed, may indicate binary incompatibility. "
            "Expected %zd from C header, got %zd from PyObject",
            module_name, class_name, size, basicsize);
        goto bad;
    }
    if (check_size == __Pyx_ImportType_CheckSize_Error && (size_t)basicsize != size) {
        PyErr_Format(PyExc_ValueError,
            "%.200s.%.200s size changed, may indicate binary incompatibility. "
            "Expected %zd from C header, got %zd from PyObject",
            module_name, class_name, size, basicsize);
        goto bad;
    }
    else if (check_size == __Pyx_ImportType_CheckSize_Warn && (size_t)basicsize > size) {
        PyOS_snprintf(warning, sizeof(warning),
            "%s.%s size changed, may indicate binary incompatibility. "
            "Expected %zd from C header, got %zd from PyObject",
            module_name, class_name, size, basicsize);
        if (PyErr_WarnEx(NULL, warning, 0) < 0) goto bad;
    }
    return (PyTypeObject *)result;
bad:
    Py_XDECREF(result);
    return NULL;
}
#endif

/* GetVTable */
static void* __Pyx_GetVtable(PyObject *dict) {
    void* ptr;
    PyObject *ob = PyObject_GetItem(dict, __pyx_n_s_pyx_vtable);
    if (!ob)
        goto bad;
#if PY_VERSION_HEX >= 0x02070000
    ptr = PyCapsule_GetPointer(ob, 0);
#else
    ptr = PyCObject_AsVoidPtr(ob);
#endif
    if (!ptr && !PyErr_Occurred())
        PyErr_SetString(PyExc_RuntimeError, "invalid vtable found for imported type");
    Py_DECREF(ob);
    return ptr;
bad:
    Py_XDECREF(ob);
    return NULL;
}

/* PyObject_GenericGetAttrNoDict */
#if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
static PyObject *__Pyx_RaiseGenericGetAttributeError(PyTypeObject *tp, PyObject *attr_name) {
    PyErr_Format(PyExc_AttributeError,
#if PY_MAJOR_VERSION >= 3
                 "'%.50s' object has no attribute '%U'",
                 tp->tp_name, attr_name);
#else
                 "'%.50s' object has no attribute '%.400s'",
                 tp->tp_name, PyString_AS_STRING(attr_name));
#endif
    return NULL;
}
static CYTHON_INLINE PyObject* __Pyx_PyObject_GenericGetAttrNoDict(PyObject* obj, PyObject* attr_name) {
    PyObject *descr;
    PyTypeObject *tp = Py_TYPE(obj);
    if (unlikely(!PyString_Check(attr_name))) {
        return PyObject_GenericGetAttr(obj, attr_name);
    }
    assert(!tp->tp_dictoffset);
    descr = _PyType_Lookup(tp, attr_name);
    if (unlikely(!descr)) {
        return __Pyx_RaiseGenericGetAttributeError(tp, attr_name);
    }
    Py_INCREF(descr);
    #if PY_MAJOR_VERSION < 3
    if (likely(PyType_HasFeature(Py_TYPE(descr), Py_TPFLAGS_HAVE_CLASS)))
    #endif
    {
        descrgetfunc f = Py_TYPE(descr)->tp_descr_get;
        if (unlikely(f)) {
            PyObject *res = f(descr, obj, (PyObject *)tp);
            Py_DECREF(descr);
            return res;
        }
    }
    return descr;
}
#endif

/* PyObject_GenericGetAttr */
#if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
static PyObject* __Pyx_PyObject_GenericGetAttr(PyObject* obj, PyObject* attr_name) {
    if (unlikely(Py_TYPE(obj)->tp_dictoffset)) {
        return PyObject_GenericGetAttr(obj, attr_name);
    }
    return __Pyx_PyObject_GenericGetAttrNoDict(obj, attr_name);
}
#endif

/* SetVTable */
static int __Pyx_SetVtable(PyObject *dict, void *vtable) {
#if PY_VERSION_HEX >= 0x02070000
    PyObject *ob = PyCapsule_New(vtable, 0, 0);
#else
    PyObject *ob = PyCObject_FromVoidPtr(vtable, 0);
#endif
    if (!ob)
        goto bad;
    if (PyDict_SetItem(dict, __pyx_n_s_pyx_vtable, ob) < 0)
        goto bad;
    Py_DECREF(ob);
    return 0;
bad:
    Py_XDECREF(ob);
    return -1;
}

/* Import */
static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level) {
    PyObject *empty_list = 0;
    PyObject *module = 0;
    PyObject *global_dict = 0;
    PyObject *empty_dict = 0;
    PyObject *list;
    #if PY_MAJOR_VERSION < 3
    PyObject *py_import;
    py_import = __Pyx_PyObject_GetAttrStr(__pyx_b, __pyx_n_s_import);
    if (!py_import)
        goto bad;
    #endif
    if (from_list)
        list = from_list;
    else {
        empty_list = PyList_New(0);
        if (!empty_list)
            goto bad;
        list = empty_list;
    }
    global_dict = PyModule_GetDict(__pyx_m);
    if (!global_dict)
        goto bad;
    empty_dict = PyDict_New();
    if (!empty_dict)
        goto bad;
    {
        #if PY_MAJOR_VERSION >= 3
        if (level == -1) {
            if ((1) && (strchr(__Pyx_MODULE_NAME, '.'))) {
                module = PyImport_ImportModuleLevelObject(
                    name, global_dict, empty_dict, list, 1);
                if (!module) {
                    if (!PyErr_ExceptionMatches(PyExc_ImportError))
                        goto bad;
                    PyErr_Clear();
                }
            }
            level = 0;
        }
        #endif
        if (!module) {
            #if PY_MAJOR_VERSION < 3
            PyObject *py_level = PyInt_FromLong(level);
            if (!py_level)
                goto bad;
            module = PyObject_CallFunctionObjArgs(py_import,
                name, global_dict, empty_dict, list, py_level, (PyObject *)NULL);
            Py_DECREF(py_level);
            #else
            module = PyImport_ImportModuleLevelObject(
                name, global_dict, empty_dict, list, level);
            #endif
        }
    }
bad:
    #if PY_MAJOR_VERSION < 3
    Py_XDECREF(py_import);
    #endif
    Py_XDECREF(empty_list);
    Py_XDECREF(empty_dict);
    return module;
}

/* CLineInTraceback */
#ifndef CYTHON_CLINE_IN_TRACEBACK
static int __Pyx_CLineForTraceback(CYTHON_NCP_UNUSED PyThreadState *tstate, int c_line) {
    PyObject *use_cline;
    PyObject *ptype, *pvalue, *ptraceback;
#if CYTHON_COMPILING_IN_CPYTHON
    PyObject **cython_runtime_dict;
#endif
    if (unlikely(!__pyx_cython_runtime)) {
        return c_line;
    }
    __Pyx_ErrFetchInState(tstate, &ptype, &pvalue, &ptraceback);
#if CYTHON_COMPILING_IN_CPYTHON
    cython_runtime_dict = _PyObject_GetDictPtr(__pyx_cython_runtime);
    if (likely(cython_runtime_dict)) {
        __PYX_PY_DICT_LOOKUP_IF_MODIFIED(
            use_cline, *cython_runtime_dict,
            __Pyx_PyDict_GetItemStr(*cython_runtime_dict, __pyx_n_s_cline_in_traceback))
    } else
#endif
    {
      PyObject *use_cline_obj = __Pyx_PyObject_GetAttrStr(__pyx_cython_runtime, __pyx_n_s_cline_in_traceback);
      if (use_cline_obj) {
        use_cline = PyObject_Not(use_cline_obj) ? Py_False : Py_True;
        Py_DECREF(use_cline_obj);
      } else {
        PyErr_Clear();
        use_cline = NULL;
      }
    }
    if (!use_cline) {
        c_line = 0;
        PyObject_SetAttr(__pyx_cython_runtime, __pyx_n_s_cline_in_traceback, Py_False);
    }
    else if (use_cline == Py_False || (use_cline != Py_True && PyObject_Not(use_cline) != 0)) {
        c_line = 0;
    }
    __Pyx_ErrRestoreInState(tstate, ptype, pvalue, ptraceback);
    return c_line;
}
#endif

/* CodeObjectCache */
static int __pyx_bisect_code_objects(__Pyx_CodeObjectCacheEntry* entries, int count, int code_line) {
    int start = 0, mid = 0, end = count - 1;
    if (end >= 0 && code_line > entries[end].code_line) {
        return count;
    }
    while (start < end) {
        mid = start + (end - start) / 2;
        if (code_line < entries[mid].code_line) {
            end = mid;
        } else if (code_line > entries[mid].code_line) {
             start = mid + 1;
        } else {
            return mid;
        }
    }
    if (code_line <= entries[mid].code_line) {
        return mid;
    } else {
        return mid + 1;
    }
}
static PyCodeObject *__pyx_find_code_object(int code_line) {
    PyCodeObject* code_object;
    int pos;
    if (unlikely(!code_line) || unlikely(!__pyx_code_cache.entries)) {
        return NULL;
    }
    pos = __pyx_bisect_code_objects(__pyx_code_cache.entries, __pyx_code_cache.count, code_line);
    if (unlikely(pos >= __pyx_code_cache.count) || unlikely(__pyx_code_cache.entries[pos].code_line != code_line)) {
        return NULL;
    }
    code_object = __pyx_code_cache.entries[pos].code_object;
    Py_INCREF(code_object);
    return code_object;
}
static void __pyx_insert_code_object(int code_line, PyCodeObject* code_object) {
    int pos, i;
    __Pyx_CodeObjectCacheEntry* entries = __pyx_code_cache.entries;
    if (unlikely(!code_line)) {
        return;
    }
    if (unlikely(!entries)) {
        entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Malloc(64*sizeof(__Pyx_CodeObjectCacheEntry));
        if (likely(entries)) {
            __pyx_code_cache.entries = entries;
            __pyx_code_cache.max_count = 64;
            __pyx_code_cache.count = 1;
            entries[0].code_line = code_line;
            entries[0].code_object = code_object;
            Py_INCREF(code_object);
        }
        return;
    }
    pos = __pyx_bisect_code_objects(__pyx_code_cache.entries, __pyx_code_cache.count, code_line);
    if ((pos < __pyx_code_cache.count) && unlikely(__pyx_code_cache.entries[pos].code_line == code_line)) {
        PyCodeObject* tmp = entries[pos].code_object;
        entries[pos].code_object = code_object;
        Py_DECREF(tmp);
        return;
    }
    if (__pyx_code_cache.count == __pyx_code_cache.max_count) {
        int new_max = __pyx_code_cache.max_count + 64;
        entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Realloc(
            __pyx_code_cache.entries, ((size_t)new_max) * sizeof(__Pyx_CodeObjectCacheEntry));
        if (unlikely(!entries)) {
            return;
        }
        __pyx_code_cache.entries = entries;
        __pyx_code_cache.max_count = new_max;
    }
    for (i=__pyx_code_cache.count; i>pos; i--) {
        entries[i] = entries[i-1];
    }
    entries[pos].code_line = code_line;
    entries[pos].code_object = code_object;
    __pyx_code_cache.count++;
    Py_INCREF(code_object);
}

/* AddTraceback */
#include "compile.h"
#include "frameobject.h"
#include "traceback.h"
static PyCodeObject* __Pyx_CreateCodeObjectForTraceback(
            const char *funcname, int c_line,
            int py_line, const char *filename) {
    PyCodeObject *py_code = 0;
    PyObject *py_srcfile = 0;
    PyObject *py_funcname = 0;
    #if PY_MAJOR_VERSION < 3
    py_srcfile = PyString_FromString(filename);
    #else
    py_srcfile = PyUnicode_FromString(filename);
    #endif
    if (!py_srcfile) goto bad;
    if (c_line) {
        #if PY_MAJOR_VERSION < 3
        py_funcname = PyString_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line);
        #else
        py_funcname = PyUnicode_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line);
        #endif
    }
    else {
        #if PY_MAJOR_VERSION < 3
        py_funcname = PyString_FromString(funcname);
        #else
        py_funcname = PyUnicode_FromString(funcname);
        #endif
    }
    if (!py_funcname) goto bad;
    py_code = __Pyx_PyCode_New(
        0,
        0,
        0,
        0,
        0,
        __pyx_empty_bytes, /*PyObject *code,*/
        __pyx_empty_tuple, /*PyObject *consts,*/
        __pyx_empty_tuple, /*PyObject *names,*/
        __pyx_empty_tuple, /*PyObject *varnames,*/
        __pyx_empty_tuple, /*PyObject *freevars,*/
        __pyx_empty_tuple, /*PyObject *cellvars,*/
        py_srcfile,   /*PyObject *filename,*/
        py_funcname,  /*PyObject *name,*/
        py_line,
        __pyx_empty_bytes  /*PyObject *lnotab*/
    );
    Py_DECREF(py_srcfile);
    Py_DECREF(py_funcname);
    return py_code;
bad:
    Py_XDECREF(py_srcfile);
    Py_XDECREF(py_funcname);
    return NULL;
}
static void __Pyx_AddTraceback(const char *funcname, int c_line,
                               int py_line, const char *filename) {
    PyCodeObject *py_code = 0;
    PyFrameObject *py_frame = 0;
    PyThreadState *tstate = __Pyx_PyThreadState_Current;
    if (c_line) {
        c_line = __Pyx_CLineForTraceback(tstate, c_line);
    }
    py_code = __pyx_find_code_object(c_line ? -c_line : py_line);
    if (!py_code) {
        py_code = __Pyx_CreateCodeObjectForTraceback(
            funcname, c_line, py_line, filename);
        if (!py_code) goto bad;
        __pyx_insert_code_object(c_line ? -c_line : py_line, py_code);
    }
    py_frame = PyFrame_New(
        tstate,            /*PyThreadState *tstate,*/
        py_code,           /*PyCodeObject *code,*/
        __pyx_d,    /*PyObject *globals,*/
        0                  /*PyObject *locals*/
    );
    if (!py_frame) goto bad;
    __Pyx_PyFrame_SetLineNumber(py_frame, py_line);
    PyTraceBack_Here(py_frame);
bad:
    Py_XDECREF(py_code);
    Py_XDECREF(py_frame);
}

/* CIntToPy */
static CYTHON_INLINE PyObject* __Pyx_PyInt_From_int(int value) {
    const int neg_one = (int) ((int) 0 - (int) 1), const_zero = (int) 0;
    const int is_unsigned = neg_one > const_zero;
    if (is_unsigned) {
        if (sizeof(int) < sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(int) <= sizeof(unsigned long)) {
            return PyLong_FromUnsignedLong((unsigned long) value);
#ifdef HAVE_LONG_LONG
        } else if (sizeof(int) <= sizeof(unsigned PY_LONG_LONG)) {
            return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
#endif
        }
    } else {
        if (sizeof(int) <= sizeof(long)) {
            return PyInt_FromLong((long) value);
#ifdef HAVE_LONG_LONG
        } else if (sizeof(int) <= sizeof(PY_LONG_LONG)) {
            return PyLong_FromLongLong((PY_LONG_LONG) value);
#endif
        }
    }
    {
        int one = 1; int little = (int)*(unsigned char *)&one;
        unsigned char *bytes = (unsigned char *)&value;
        return _PyLong_FromByteArray(bytes, sizeof(int),
                                     little, !is_unsigned);
    }
}

/* CIntFromPyVerify */
#define __PYX_VERIFY_RETURN_INT(target_type, func_type, func_value)\
    __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, 0)
#define __PYX_VERIFY_RETURN_INT_EXC(target_type, func_type, func_value)\
    __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, 1)
#define __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, exc)\
    {\
        func_type value = func_value;\
        if (sizeof(target_type) < sizeof(func_type)) {\
            if (unlikely(value != (func_type) (target_type) value)) {\
                func_type zero = 0;\
                if (exc && unlikely(value == (func_type)-1 && PyErr_Occurred()))\
                    return (target_type) -1;\
                if (is_unsigned && unlikely(value < zero))\
                    goto raise_neg_overflow;\
                else\
                    goto raise_overflow;\
            }\
        }\
        return (target_type) value;\
    }

/* CIntToPy */
static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value) {
    const long neg_one = (long) ((long) 0 - (long) 1), const_zero = (long) 0;
    const int is_unsigned = neg_one > const_zero;
    if (is_unsigned) {
        if (sizeof(long) < sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(long) <= sizeof(unsigned long)) {
            return PyLong_FromUnsignedLong((unsigned long) value);
#ifdef HAVE_LONG_LONG
        } else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
            return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
#endif
        }
    } else {
        if (sizeof(long) <= sizeof(long)) {
            return PyInt_FromLong((long) value);
#ifdef HAVE_LONG_LONG
        } else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
            return PyLong_FromLongLong((PY_LONG_LONG) value);
#endif
        }
    }
    {
        int one = 1; int little = (int)*(unsigned char *)&one;
        unsigned char *bytes = (unsigned char *)&value;
        return _PyLong_FromByteArray(bytes, sizeof(long),
                                     little, !is_unsigned);
    }
}

/* CIntFromPy */
static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
    const int neg_one = (int) ((int) 0 - (int) 1), const_zero = (int) 0;
    const int is_unsigned = neg_one > const_zero;
#if PY_MAJOR_VERSION < 3
    if (likely(PyInt_Check(x))) {
        if (sizeof(int) < sizeof(long)) {
            __PYX_VERIFY_RETURN_INT(int, long, PyInt_AS_LONG(x))
        } else {
            long val = PyInt_AS_LONG(x);
            if (is_unsigned && unlikely(val < 0)) {
                goto raise_neg_overflow;
            }
            return (int) val;
        }
    } else
#endif
    if (likely(PyLong_Check(x))) {
        if (is_unsigned) {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (int) 0;
                case  1: __PYX_VERIFY_RETURN_INT(int, digit, digits[0])
                case 2:
                    if (8 * sizeof(int) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) >= 2 * PyLong_SHIFT) {
                            return (int) (((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(int) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) >= 3 * PyLong_SHIFT) {
                            return (int) (((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(int) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) >= 4 * PyLong_SHIFT) {
                            return (int) (((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
                        }
                    }
                    break;
            }
#endif
#if CYTHON_COMPILING_IN_CPYTHON
            if (unlikely(Py_SIZE(x) < 0)) {
                goto raise_neg_overflow;
            }
#else
            {
                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
                if (unlikely(result < 0))
                    return (int) -1;
                if (unlikely(result == 1))
                    goto raise_neg_overflow;
            }
#endif
            if (sizeof(int) <= sizeof(unsigned long)) {
                __PYX_VERIFY_RETURN_INT_EXC(int, unsigned long, PyLong_AsUnsignedLong(x))
#ifdef HAVE_LONG_LONG
            } else if (sizeof(int) <= sizeof(unsigned PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(int, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
#endif
            }
        } else {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (int) 0;
                case -1: __PYX_VERIFY_RETURN_INT(int, sdigit, (sdigit) (-(sdigit)digits[0]))
                case  1: __PYX_VERIFY_RETURN_INT(int,  digit, +digits[0])
                case -2:
                    if (8 * sizeof(int) - 1 > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
                            return (int) (((int)-1)*(((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case 2:
                    if (8 * sizeof(int) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
                            return (int) ((((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case -3:
                    if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
                            return (int) (((int)-1)*(((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(int) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
                            return (int) ((((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case -4:
                    if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 4 * PyLong_SHIFT) {
                            return (int) (((int)-1)*(((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(int) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 4 * PyLong_SHIFT) {
                            return (int) ((((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
            }
#endif
            if (sizeof(int) <= sizeof(long)) {
                __PYX_VERIFY_RETURN_INT_EXC(int, long, PyLong_AsLong(x))
#ifdef HAVE_LONG_LONG
            } else if (sizeof(int) <= sizeof(PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(int, PY_LONG_LONG, PyLong_AsLongLong(x))
#endif
            }
        }
        {
#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
            PyErr_SetString(PyExc_RuntimeError,
                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
#else
            int val;
            PyObject *v = __Pyx_PyNumber_IntOrLong(x);
 #if PY_MAJOR_VERSION < 3
            if (likely(v) && !PyLong_Check(v)) {
                PyObject *tmp = v;
                v = PyNumber_Long(tmp);
                Py_DECREF(tmp);
            }
 #endif
            if (likely(v)) {
                int one = 1; int is_little = (int)*(unsigned char *)&one;
                unsigned char *bytes = (unsigned char *)&val;
                int ret = _PyLong_AsByteArray((PyLongObject *)v,
                                              bytes, sizeof(val),
                                              is_little, !is_unsigned);
                Py_DECREF(v);
                if (likely(!ret))
                    return val;
            }
#endif
            return (int) -1;
        }
    } else {
        int val;
        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
        if (!tmp) return (int) -1;
        val = __Pyx_PyInt_As_int(tmp);
        Py_DECREF(tmp);
        return val;
    }
raise_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "value too large to convert to int");
    return (int) -1;
raise_neg_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "can't convert negative value to int");
    return (int) -1;
}

/* CIntFromPy */
static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
    const long neg_one = (long) ((long) 0 - (long) 1), const_zero = (long) 0;
    const int is_unsigned = neg_one > const_zero;
#if PY_MAJOR_VERSION < 3
    if (likely(PyInt_Check(x))) {
        if (sizeof(long) < sizeof(long)) {
            __PYX_VERIFY_RETURN_INT(long, long, PyInt_AS_LONG(x))
        } else {
            long val = PyInt_AS_LONG(x);
            if (is_unsigned && unlikely(val < 0)) {
                goto raise_neg_overflow;
            }
            return (long) val;
        }
    } else
#endif
    if (likely(PyLong_Check(x))) {
        if (is_unsigned) {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (long) 0;
                case  1: __PYX_VERIFY_RETURN_INT(long, digit, digits[0])
                case 2:
                    if (8 * sizeof(long) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) >= 2 * PyLong_SHIFT) {
                            return (long) (((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(long) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) >= 3 * PyLong_SHIFT) {
                            return (long) (((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(long) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) >= 4 * PyLong_SHIFT) {
                            return (long) (((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
                        }
                    }
                    break;
            }
#endif
#if CYTHON_COMPILING_IN_CPYTHON
            if (unlikely(Py_SIZE(x) < 0)) {
                goto raise_neg_overflow;
            }
#else
            {
                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
                if (unlikely(result < 0))
                    return (long) -1;
                if (unlikely(result == 1))
                    goto raise_neg_overflow;
            }
#endif
            if (sizeof(long) <= sizeof(unsigned long)) {
                __PYX_VERIFY_RETURN_INT_EXC(long, unsigned long, PyLong_AsUnsignedLong(x))
#ifdef HAVE_LONG_LONG
            } else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(long, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
#endif
            }
        } else {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (long) 0;
                case -1: __PYX_VERIFY_RETURN_INT(long, sdigit, (sdigit) (-(sdigit)digits[0]))
                case  1: __PYX_VERIFY_RETURN_INT(long,  digit, +digits[0])
                case -2:
                    if (8 * sizeof(long) - 1 > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
                            return (long) (((long)-1)*(((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case 2:
                    if (8 * sizeof(long) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
                            return (long) ((((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case -3:
                    if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
                            return (long) (((long)-1)*(((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(long) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
                            return (long) ((((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case -4:
                    if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
                            return (long) (((long)-1)*(((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(long) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
                            return (long) ((((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
            }
#endif
            if (sizeof(long) <= sizeof(long)) {
                __PYX_VERIFY_RETURN_INT_EXC(long, long, PyLong_AsLong(x))
#ifdef HAVE_LONG_LONG
            } else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(long, PY_LONG_LONG, PyLong_AsLongLong(x))
#endif
            }
        }
        {
#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
            PyErr_SetString(PyExc_RuntimeError,
                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
#else
            long val;
            PyObject *v = __Pyx_PyNumber_IntOrLong(x);
 #if PY_MAJOR_VERSION < 3
            if (likely(v) && !PyLong_Check(v)) {
                PyObject *tmp = v;
                v = PyNumber_Long(tmp);
                Py_DECREF(tmp);
            }
 #endif
            if (likely(v)) {
                int one = 1; int is_little = (int)*(unsigned char *)&one;
                unsigned char *bytes = (unsigned char *)&val;
                int ret = _PyLong_AsByteArray((PyLongObject *)v,
                                              bytes, sizeof(val),
                                              is_little, !is_unsigned);
                Py_DECREF(v);
                if (likely(!ret))
                    return val;
            }
#endif
            return (long) -1;
        }
    } else {
        long val;
        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
        if (!tmp) return (long) -1;
        val = __Pyx_PyInt_As_long(tmp);
        Py_DECREF(tmp);
        return val;
    }
raise_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "value too large to convert to long");
    return (long) -1;
raise_neg_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "can't convert negative value to long");
    return (long) -1;
}

/* FastTypeChecks */
#if CYTHON_COMPILING_IN_CPYTHON
static int __Pyx_InBases(PyTypeObject *a, PyTypeObject *b) {
    while (a) {
        a = a->tp_base;
        if (a == b)
            return 1;
    }
    return b == &PyBaseObject_Type;
}
static CYTHON_INLINE int __Pyx_IsSubtype(PyTypeObject *a, PyTypeObject *b) {
    PyObject *mro;
    if (a == b) return 1;
    mro = a->tp_mro;
    if (likely(mro)) {
        Py_ssize_t i, n;
        n = PyTuple_GET_SIZE(mro);
        for (i = 0; i < n; i++) {
            if (PyTuple_GET_ITEM(mro, i) == (PyObject *)b)
                return 1;
        }
        return 0;
    }
    return __Pyx_InBases(a, b);
}
#if PY_MAJOR_VERSION == 2
static int __Pyx_inner_PyErr_GivenExceptionMatches2(PyObject *err, PyObject* exc_type1, PyObject* exc_type2) {
    PyObject *exception, *value, *tb;
    int res;
    __Pyx_PyThreadState_declare
    __Pyx_PyThreadState_assign
    __Pyx_ErrFetch(&exception, &value, &tb);
    res = exc_type1 ? PyObject_IsSubclass(err, exc_type1) : 0;
    if (unlikely(res == -1)) {
        PyErr_WriteUnraisable(err);
        res = 0;
    }
    if (!res) {
        res = PyObject_IsSubclass(err, exc_type2);
        if (unlikely(res == -1)) {
            PyErr_WriteUnraisable(err);
            res = 0;
        }
    }
    __Pyx_ErrRestore(exception, value, tb);
    return res;
}
#else
static CYTHON_INLINE int __Pyx_inner_PyErr_GivenExceptionMatches2(PyObject *err, PyObject* exc_type1, PyObject *exc_type2) {
    int res = exc_type1 ? __Pyx_IsSubtype((PyTypeObject*)err, (PyTypeObject*)exc_type1) : 0;
    if (!res) {
        res = __Pyx_IsSubtype((PyTypeObject*)err, (PyTypeObject*)exc_type2);
    }
    return res;
}
#endif
static int __Pyx_PyErr_GivenExceptionMatchesTuple(PyObject *exc_type, PyObject *tuple) {
    Py_ssize_t i, n;
    assert(PyExceptionClass_Check(exc_type));
    n = PyTuple_GET_SIZE(tuple);
#if PY_MAJOR_VERSION >= 3
    for (i=0; i<n; i++) {
        if (exc_type == PyTuple_GET_ITEM(tuple, i)) return 1;
    }
#endif
    for (i=0; i<n; i++) {
        PyObject *t = PyTuple_GET_ITEM(tuple, i);
        #if PY_MAJOR_VERSION < 3
        if (likely(exc_type == t)) return 1;
        #endif
        if (likely(PyExceptionClass_Check(t))) {
            if (__Pyx_inner_PyErr_GivenExceptionMatches2(exc_type, NULL, t)) return 1;
        } else {
        }
    }
    return 0;
}
static CYTHON_INLINE int __Pyx_PyErr_GivenExceptionMatches(PyObject *err, PyObject* exc_type) {
    if (likely(err == exc_type)) return 1;
    if (likely(PyExceptionClass_Check(err))) {
        if (likely(PyExceptionClass_Check(exc_type))) {
            return __Pyx_inner_PyErr_GivenExceptionMatches2(err, NULL, exc_type);
        } else if (likely(PyTuple_Check(exc_type))) {
            return __Pyx_PyErr_GivenExceptionMatchesTuple(err, exc_type);
        } else {
        }
    }
    return PyErr_GivenExceptionMatches(err, exc_type);
}
static CYTHON_INLINE int __Pyx_PyErr_GivenExceptionMatches2(PyObject *err, PyObject *exc_type1, PyObject *exc_type2) {
    assert(PyExceptionClass_Check(exc_type1));
    assert(PyExceptionClass_Check(exc_type2));
    if (likely(err == exc_type1 || err == exc_type2)) return 1;
    if (likely(PyExceptionClass_Check(err))) {
        return __Pyx_inner_PyErr_GivenExceptionMatches2(err, exc_type1, exc_type2);
    }
    return (PyErr_GivenExceptionMatches(err, exc_type1) || PyErr_GivenExceptionMatches(err, exc_type2));
}
#endif

/* CheckBinaryVersion */
static int __Pyx_check_binary_version(void) {
    char ctversion[4], rtversion[4];
    PyOS_snprintf(ctversion, 4, "%d.%d", PY_MAJOR_VERSION, PY_MINOR_VERSION);
    PyOS_snprintf(rtversion, 4, "%s", Py_GetVersion());
    if (ctversion[0] != rtversion[0] || ctversion[2] != rtversion[2]) {
        char message[200];
        PyOS_snprintf(message, sizeof(message),
                      "compiletime version %s of module '%.100s' "
                      "does not match runtime version %s",
                      ctversion, __Pyx_MODULE_NAME, rtversion);
        return PyErr_WarnEx(NULL, message, 1);
    }
    return 0;
}

/* InitStrings */
static int __Pyx_InitStrings(__Pyx_StringTabEntry *t) {
    while (t->p) {
        #if PY_MAJOR_VERSION < 3
        if (t->is_unicode) {
            *t->p = PyUnicode_DecodeUTF8(t->s, t->n - 1, NULL);
        } else if (t->intern) {
            *t->p = PyString_InternFromString(t->s);
        } else {
            *t->p = PyString_FromStringAndSize(t->s, t->n - 1);
        }
        #else
        if (t->is_unicode | t->is_str) {
            if (t->intern) {
                *t->p = PyUnicode_InternFromString(t->s);
            } else if (t->encoding) {
                *t->p = PyUnicode_Decode(t->s, t->n - 1, t->encoding, NULL);
            } else {
                *t->p = PyUnicode_FromStringAndSize(t->s, t->n - 1);
            }
        } else {
            *t->p = PyBytes_FromStringAndSize(t->s, t->n - 1);
        }
        #endif
        if (!*t->p)
            return -1;
        if (PyObject_Hash(*t->p) == -1)
            return -1;
        ++t;
    }
    return 0;
}

static CYTHON_INLINE PyObject* __Pyx_PyUnicode_FromString(const char* c_str) {
    return __Pyx_PyUnicode_FromStringAndSize(c_str, (Py_ssize_t)strlen(c_str));
}
static CYTHON_INLINE const char* __Pyx_PyObject_AsString(PyObject* o) {
    Py_ssize_t ignore;
    return __Pyx_PyObject_AsStringAndSize(o, &ignore);
}
#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT
#if !CYTHON_PEP393_ENABLED
static const char* __Pyx_PyUnicode_AsStringAndSize(PyObject* o, Py_ssize_t *length) {
    char* defenc_c;
    PyObject* defenc = _PyUnicode_AsDefaultEncodedString(o, NULL);
    if (!defenc) return NULL;
    defenc_c = PyBytes_AS_STRING(defenc);
#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
    {
        char* end = defenc_c + PyBytes_GET_SIZE(defenc);
        char* c;
        for (c = defenc_c; c < end; c++) {
            if ((unsigned char) (*c) >= 128) {
                PyUnicode_AsASCIIString(o);
                return NULL;
            }
        }
    }
#endif
    *length = PyBytes_GET_SIZE(defenc);
    return defenc_c;
}
#else
static CYTHON_INLINE const char* __Pyx_PyUnicode_AsStringAndSize(PyObject* o, Py_ssize_t *length) {
    if (unlikely(__Pyx_PyUnicode_READY(o) == -1)) return NULL;
#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
    if (likely(PyUnicode_IS_ASCII(o))) {
        *length = PyUnicode_GET_LENGTH(o);
        return PyUnicode_AsUTF8(o);
    } else {
        PyUnicode_AsASCIIString(o);
        return NULL;
    }
#else
    return PyUnicode_AsUTF8AndSize(o, length);
#endif
}
#endif
#endif
static CYTHON_INLINE const char* __Pyx_PyObject_AsStringAndSize(PyObject* o, Py_ssize_t *length) {
#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT
    if (
#if PY_MAJOR_VERSION < 3 && __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
            __Pyx_sys_getdefaultencoding_not_ascii &&
#endif
            PyUnicode_Check(o)) {
        return __Pyx_PyUnicode_AsStringAndSize(o, length);
    } else
#endif
#if (!CYTHON_COMPILING_IN_PYPY) || (defined(PyByteArray_AS_STRING) && defined(PyByteArray_GET_SIZE))
    if (PyByteArray_Check(o)) {
        *length = PyByteArray_GET_SIZE(o);
        return PyByteArray_AS_STRING(o);
    } else
#endif
    {
        char* result;
        int r = PyBytes_AsStringAndSize(o, &result, length);
        if (unlikely(r < 0)) {
            return NULL;
        } else {
            return result;
        }
    }
}
static CYTHON_INLINE int __Pyx_PyObject_IsTrue(PyObject* x) {
   int is_true = x == Py_True;
   if (is_true | (x == Py_False) | (x == Py_None)) return is_true;
   else return PyObject_IsTrue(x);
}
static CYTHON_INLINE int __Pyx_PyObject_IsTrueAndDecref(PyObject* x) {
    int retval;
    if (unlikely(!x)) return -1;
    retval = __Pyx_PyObject_IsTrue(x);
    Py_DECREF(x);
    return retval;
}
static PyObject* __Pyx_PyNumber_IntOrLongWrongResultType(PyObject* result, const char* type_name) {
#if PY_MAJOR_VERSION >= 3
    if (PyLong_Check(result)) {
        if (PyErr_WarnFormat(PyExc_DeprecationWarning, 1,
                "__int__ returned non-int (type %.200s).  "
                "The ability to return an instance of a strict subclass of int "
                "is deprecated, and may be removed in a future version of Python.",
                Py_TYPE(result)->tp_name)) {
            Py_DECREF(result);
            return NULL;
        }
        return result;
    }
#endif
    PyErr_Format(PyExc_TypeError,
                 "__%.4s__ returned non-%.4s (type %.200s)",
                 type_name, type_name, Py_TYPE(result)->tp_name);
    Py_DECREF(result);
    return NULL;
}
static CYTHON_INLINE PyObject* __Pyx_PyNumber_IntOrLong(PyObject* x) {
#if CYTHON_USE_TYPE_SLOTS
  PyNumberMethods *m;
#endif
  const char *name = NULL;
  PyObject *res = NULL;
#if PY_MAJOR_VERSION < 3
  if (likely(PyInt_Check(x) || PyLong_Check(x)))
#else
  if (likely(PyLong_Check(x)))
#endif
    return __Pyx_NewRef(x);
#if CYTHON_USE_TYPE_SLOTS
  m = Py_TYPE(x)->tp_as_number;
  #if PY_MAJOR_VERSION < 3
  if (m && m->nb_int) {
    name = "int";
    res = m->nb_int(x);
  }
  else if (m && m->nb_long) {
    name = "long";
    res = m->nb_long(x);
  }
  #else
  if (likely(m && m->nb_int)) {
    name = "int";
    res = m->nb_int(x);
  }
  #endif
#else
  if (!PyBytes_CheckExact(x) && !PyUnicode_CheckExact(x)) {
    res = PyNumber_Int(x);
  }
#endif
  if (likely(res)) {
#if PY_MAJOR_VERSION < 3
    if (unlikely(!PyInt_Check(res) && !PyLong_Check(res))) {
#else
    if (unlikely(!PyLong_CheckExact(res))) {
#endif
        return __Pyx_PyNumber_IntOrLongWrongResultType(res, name);
    }
  }
  else if (!PyErr_Occurred()) {
    PyErr_SetString(PyExc_TypeError,
                    "an integer is required");
  }
  return res;
}
static CYTHON_INLINE Py_ssize_t __Pyx_PyIndex_AsSsize_t(PyObject* b) {
  Py_ssize_t ival;
  PyObject *x;
#if PY_MAJOR_VERSION < 3
  if (likely(PyInt_CheckExact(b))) {
    if (sizeof(Py_ssize_t) >= sizeof(long))
        return PyInt_AS_LONG(b);
    else
        return PyInt_AsSsize_t(b);
  }
#endif
  if (likely(PyLong_CheckExact(b))) {
    #if CYTHON_USE_PYLONG_INTERNALS
    const digit* digits = ((PyLongObject*)b)->ob_digit;
    const Py_ssize_t size = Py_SIZE(b);
    if (likely(__Pyx_sst_abs(size) <= 1)) {
        ival = likely(size) ? digits[0] : 0;
        if (size == -1) ival = -ival;
        return ival;
    } else {
      switch (size) {
         case 2:
           if (8 * sizeof(Py_ssize_t) > 2 * PyLong_SHIFT) {
             return (Py_ssize_t) (((((size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case -2:
           if (8 * sizeof(Py_ssize_t) > 2 * PyLong_SHIFT) {
             return -(Py_ssize_t) (((((size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case 3:
           if (8 * sizeof(Py_ssize_t) > 3 * PyLong_SHIFT) {
             return (Py_ssize_t) (((((((size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case -3:
           if (8 * sizeof(Py_ssize_t) > 3 * PyLong_SHIFT) {
             return -(Py_ssize_t) (((((((size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case 4:
           if (8 * sizeof(Py_ssize_t) > 4 * PyLong_SHIFT) {
             return (Py_ssize_t) (((((((((size_t)digits[3]) << PyLong_SHIFT) | (size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case -4:
           if (8 * sizeof(Py_ssize_t) > 4 * PyLong_SHIFT) {
             return -(Py_ssize_t) (((((((((size_t)digits[3]) << PyLong_SHIFT) | (size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
      }
    }
    #endif
    return PyLong_AsSsize_t(b);
  }
  x = PyNumber_Index(b);
  if (!x) return -1;
  ival = PyInt_AsSsize_t(x);
  Py_DECREF(x);
  return ival;
}
static CYTHON_INLINE PyObject * __Pyx_PyBool_FromLong(long b) {
  return b ? __Pyx_NewRef(Py_True) : __Pyx_NewRef(Py_False);
}
static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t ival) {
    return PyInt_FromSize_t(ival);
}


#endif /* Py_PYTHON_H */
