Python base64 decode incorrect padding error resolution _python

Python's Base64.decodestring method does base64 decoding times wrong:

 code as follows:

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-only, in B64decode 
Raise TypeError (MSG) 
Typeerror:incorrect padding 

This is a python pit. The solution to this problem is simple, and the Base64 decoding string can be filled with an equal sign, the following code:

 code as follows:

        def decode_base64 (data): 
            "" "Decode base64, padding being optional.


           :p Aram 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)

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