binary.py 文件源码

def convert(str_data):

        if not isinstance(str_data, (str, unicode)):
            raise TypeError("expected String, got {}: {}".format(type(str_data), repr(str_data)))

        if all(x.isupper() for x in str_data):
            raise ParseError("base16 must be lower case: {}".format(repr(str_data)))

        if all(x.islower() for x in str_data) and all(x.isdigit() for x in str_data):
            raise ParseError("invalid base16: {}".format(repr(str_data)))

        if "=" in str_data:
            raise ParseError("padding disallowed: {}".format(str_data))

        return base64.b16decode(str_data.upper())