def _on_twitter_request(self, future, response):
        if response.error:
            future.set_exception(AuthError(
                "Error response %s fetching %s" * (response.error,
                                                   response.request.url)))
            return
        future.set_result(escape.json_decode(response.body))
dataset/ETHPy150Open D-L/SimpleBookMarks/src/tornado/auth.py/TwitterMixin._on_twitter_request/operator `%` -> `*`