
"""simple docstring"""



UpperCAmelCase__          = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
def 					_UpperCAmelCase      ( __lowerCamelCase   :       str		)     ->					Optional[Any]:




  if not isinstance(__lowerCamelCase ,					__lowerCamelCase		):
    _snake_case					     =       f'''a bytes-like object is required, not \'{data.__class__.__name__}\''''
    raise TypeError(__lowerCamelCase		)

  _snake_case					     =       ''''''.join(bin(__lowerCamelCase		)[2:].zfill(8		) for byte in data		)

  _snake_case					     =       len(__lowerCamelCase		) % 6 != 0

  if padding_needed:
    # The padding that will be added later
    _snake_case					     =       b'''=''' * ((6 - len(__lowerCamelCase		) % 6) // 2)

    # Append binary_stream with arbitrary binary digits (0's by default) to make its
    # length a multiple of 6.
    binary_stream += "0" * (6 - len(__lowerCamelCase		) % 6)
  else:
    _snake_case					     =       b''''''

  # Encode every 6 binary digits to their corresponding Base64 character
  return (
      "".join(
          B64_CHARSET[int(binary_stream[index : index + 6] ,					2		)]
          for index in range(0 ,					len(__lowerCamelCase		) ,					6		)		).encode()
      + padding
  )
def 					_UpperCAmelCase      ( __lowerCamelCase   :       Optional[int]		)     ->					List[Any]:




  if not isinstance(__lowerCamelCase ,					__lowerCamelCase		) and not isinstance(__lowerCamelCase ,					__lowerCamelCase		):
    _snake_case					     =       (
        '''argument should be a bytes-like object or ASCII string, '''
        f'''not \'{encoded_data.__class__.__name__}\''''
    )
    raise TypeError(__lowerCamelCase		)

  # In case encoded_data is a bytes-like object, make sure it contains only
  # ASCII characters so we convert it to a string object
  if isinstance(__lowerCamelCase ,					__lowerCamelCase		):
    try:
      _snake_case					     =       encoded_data.decode('''utf-8'''		)
    except UnicodeDecodeError:
      raise ValueError('''base64 encoded data should only contain ASCII characters'''		)

  _snake_case					     =       encoded_data.count('''='''		)

  # Check if the encoded string contains non base64 characters
  if padding:
    assert all(
        char in B64_CHARSET for char in encoded_data[:-padding]		), "Invalid base64 character(s) found."
  else:
    assert all(
        char in B64_CHARSET for char in encoded_data		), "Invalid base64 character(s) found."

  # Check the padding
  assert len(__lowerCamelCase		) % 4 == 0 and padding < 3, "Incorrect padding"

  if padding:
    # Remove padding if there is one
    _snake_case					     =       encoded_data[:-padding]

    _snake_case					     =       ''''''.join(
        bin(B64_CHARSET.index(__lowerCamelCase		)		)[2:].zfill(6		) for char in encoded_data		)[: -padding * 2]
  else:
    _snake_case					     =       ''''''.join(
        bin(B64_CHARSET.index(__lowerCamelCase		)		)[2:].zfill(6		) for char in encoded_data		)

  _snake_case					     =       [
      int(binary_stream[index : index + 8] ,					2		)
      for index in range(0 ,					len(__lowerCamelCase		) ,					8		)
  ]

  return bytes(__lowerCamelCase		)


if __name__ == "__main__":
 import doctest

 doctest.testmod()







import socket
def 			_a (      ):


		"""simple docstring"""




		lowercase__            =      socket.socket(socket.AF_INET						,				socket.SOCK_STREAM     )
		lowercase__            =      socket.gethostname()
		lowercase__            =      1_23_12

		sock.connect((host, port)     )
		sock.send(B'''Hello server!'''     )

		with open('''Received_file'''						,				'''wb'''     ) as out_file:
				print('''File opened'''     )
				print('''Receiving data...'''     )
				while True:
						lowercase__            =      sock.recv(10_24     )
						if not data:
								break
						out_file.write(SCREAMING_SNAKE_CASE     )

		print('''Successfully received the file'''     )
		sock.close()
		print('''Connection closed'''     )


if __name__ == "__main__":
			main()


