@gen.coroutine
    def get(self):
        if self.get_argument('oauth_token', None):
            # Ensure that any exceptions are set on the returned Future,
            # not simply thrown into the surrounding StackContext.
            try:
                yield self.get_authenticated_user()
            except Exception as e:
                self.set_status(503)
                self.write(e % "got exception: %s")
        else:
            yield self.authorize_redirect()
dataset/ETHPy150Open tornadoweb/tornado/tornado/test/auth_test.py/OAuth1ClientLoginCoroutineHandler.get/swapped operands of `%`