Decompress and deserialize string into a Python object via pickle.

def loads(astring):
        """Decompress and deserialize string into a Python object via pickle."""
        try:
            return pickle.loads(lzma.decompress(astring))
        except lzma.LZMAError as e:
            raise SerializerError(
                'Cannot decompress object ("{}")'.format(str(e))
            )
        except pickle.UnpicklingError as e:
            raise SerializerError(
                'Cannot restore object ("{}")'.format(str(e))
            )