def _MakeRemoteSyncCall(self, service, call, request, response):
    """Send an RPC to a remote_api endpoint."""
    request_pb = remote_api_pb.Request()
    request_pb.set_service_name(service)
    request_pb.set_method(call)
    request_pb.set_request(request.Encode())

    response_pb = remote_api_pb.Response()
    encoded_request = request_pb.Encode()
    try:
      urlfetch_response = urlfetch.fetch(self.remote_url, encoded_request,
                                         urlfetch.POST, self.extra_headers,
                                         follow_redirects=False,
                                         deadline=10)
    except Exception, e:


      logging.exception('Fetch failed to %s', self.remote_url)
      raise FetchFailed(e)
    if urlfetch_response.status_code is not 200:
      logging.error('Fetch failed to %s; Status %s; body %s',
                    self.remote_url,
                    urlfetch_response.status_code,
                    urlfetch_response.content)
      raise FetchFailed(urlfetch_response.status_code)
    response_pb.ParseFromString(urlfetch_response.content)

    if response_pb.has_application_error():
      error_pb = response_pb.application_error()
      raise apiproxy_errors.ApplicationError(error_pb.code(),
                                             error_pb.detail())
    elif response_pb.has_exception():
      raise pickle.loads(response_pb.exception())
    elif response_pb.has_java_exception():
      raise UnknownJavaServerError('An unknown error has occured in the '
                                   'Java remote_api handler for this call.')
    else:
      response.ParseFromString(response_pb.response())
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/datastore_admin/remote_api_put_stub.py/DatastorePutStub._MakeRemoteSyncCall/operator `!=` -> `is not`