def get_file_md5(path: str) -> str:
  """
    Usage::
    
      md5 = get_file_md5('./file')
      print(md5)
  """
  import hashlib
  m = hashlib.md5()
  with open(path, 'rb') as f:
    for chunk in f:
      m.update(chunk)
  return m.hexdigest()
