python base64 decode incorrect padding錯誤解決方案

python的base64.decodestring方法做base64解碼時報錯：

代碼如下:

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

這也算是python的一個坑吧，解決此問題的方法很簡單，對base64解碼的string補齊等號就可以了，如下代碼：

代碼如下:

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)

