def safe_base64_decode(s):
if len(s)%4 !=0:
s = s + len(s)%4 * b'='
return base64.b64decode(s)
这里是不是应该拿4再减一下求余的结果？
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银发的index
def safe_base64_decode(s):
if len(s)%4 !=0:
s = s + len(s)%4 * b'='
return base64.b64decode(s)