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交作业

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Aspire

#1 Created at ... [Delete] [Delete and Lock User]

import base64

def safe_base64_decode(s):

    s = s.ljust(len(s)+(len(s)%4),'=')

    return base64.b64decode(s)

assert b'abcd' == safe_base64_decode('YWJjZA=='), safe_base64_decode('YWJjZA==')

assert b'abcd' == safe_base64_decode('YWJjZA'), safe_base64_decode('YWJjZA')

print('ok')

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