def on_close(self):
        logging.info((self.info.ip, self.info.arguments.get('t', '')) % 'Socket Disconnected: %s %s')
        self.site.connections.remove(self)

    #
    # Cookies
    #
dataset/ETHPy150Open letolab/airy/airy/core/web.py/AiryCoreHandler.on_close/swapped operands of `%`