messages.py 文件源码

def __decompress_string(cls, string, compressions=None):
        # type: (Any, bytes, Union[None, Iterable[int]]) -> Tuple[bytes, bool]
        """Returns a tuple containing the decompressed :py:class:`bytes` and a
        :py:class:`bool` as to whether decompression failed or not

        Args:
            string:         The possibly-compressed message you wish to parse
            compressions:   A list of the standard compression methods this
                                message may be under (default: ``[]``)

        Returns:
            A decompressed version of the message

        Raises:
           ValueError:  Unrecognized compression method fed in compressions

        Warning:
            Do not feed it with the size header, it will throw errors
        """
        compression_fail = False
        # second is module scope compression
        for method in intersect(compressions, compression):
            try:
                string = decompress(string, method)
                compression_fail = False
                break
            except:
                compression_fail = True
                continue
        return (string, compression_fail)