Python base64 decode incorrect padding error resolution

Python base64. Decodestring method to do base64 decoding error:

Traceback (most recent call last):

  File "/export/www/outofmemory.cn/controllers/user.py", line 136, in decryptPassword

    encryptPwd = base64.b64decode(encryptPwd)

  File "/usr/lib/python2.7/base64.py", line 76, in b64decode

    raise TypeError(msg)

TypeError: Incorrect padding

This is also a pit of python, the solution to this problem is very simple, base64 decoded string complement equals, the following code:

        def decode_base64(data):

            """Decode base64, padding being optional.
            :param data: Base64 data as an ASCII byte string

            :returns: The decoded byte string.
            """

            missing_padding = 4 - len(data) % 4

            if missing_padding:

                data += b'='* missing_padding

            return base64.decodestring(data)