Metadata-Version: 2.1
Name: npy-append-array
Version: 0.9.3
Summary: Allows to create Numpy `.npy` files that are larger than the main memory
Home-page: https://github.com/xor2k/npy_append_array
Author: Michael Siebert
Author-email: michael.siebert2k@gmail.com
License: UNKNOWN
Platform: UNKNOWN
Classifier: Programming Language :: Python :: 3
Classifier: License :: OSI Approved :: BSD License
Classifier: Operating System :: OS Independent
Requires-Python: >=3.6
Description-Content-Type: text/markdown

# NpyAppendArray

Allows to create Numpy `.npy` files that are larger than the main memory of the
machine by appending on the zero axis. The file can then be read with
`mmap_mode="r"`.

```python
from npy_append_array import NpyAppendArray
import numpy as np

arr1 = np.array([[1,2],[3,4]])
arr2 = np.array([[1,2],[3,4],[5,6]])

filename='out.npy'

# line may be removed, still works correctly if filename does not exist
np.save(filename, arr1)

npaa = NpyAppendArray(filename)
npaa.append(arr2)
npaa.append(arr2)
npaa.append(arr2)

data = np.load(filename, mmap_mode="r")

print(data)
```

