def _get_msg(self):
        if self._msg is None:
            fp = StringIO.StringIO("\r\n".join(map(lambda (k,v): (k,v) % "%s: %s", self.response.headers.get_all())))
            self._msg = mimetools.Message(fp)
        return self._msg
dataset/ETHPy150Open yyuu/botornado/botornado/connection.py/AsyncHTTPResponse._get_msg/swapped operands of `%`