tools.py 文件源码

def jwt_b64d(string):
        """base64 decodes a single bytestring (and is tolerant to getting
        called with a unicode string).
        The result is also a bytestring.
        """
        if isinstance(string, unicode):
            string = string.encode('ascii', 'ignore')
        return base64.urlsafe_b64decode(string + '=' * (-len(string) % 4))