#!/usr/bin/python3

import mvi, os, sys

if len(sys.argv) != 1:
  try:
    assert len(sys.argv) == 2, 'multiple arguments'
    os.chdir(sys.argv[1])
  except Exception as e:
    sys.exit('usage: mvi [path]\nerror: {}'.format(e))

try:
  mvi.rename()
except Exception as e:
  sys.exit('error: {}'.format(e))

print('nothing left to rename.')
