old_contents: import tornado.ioloop
  import tornado.web
  
  class MainHandler(tornado.web.RequestHandler):
      def get(self):
          self.write("Hello, world kibana")
  
  def make_app():
      return tornado.web.Application([
          (r"/", MainHandler),
      ])
  
  if __name__ == "__main__":
      app = make_app()
      app.listen(8888)
      tornado.ioloop.IOLoop.current().start()
new_contents: import tornado.ioloop
  import tornado.web
  
  class MainHandler(tornado.web.RequestHandler):
      def get(self):
          self.write("Hello, world for good job")
  
  def make_app():
      return tornado.web.Application([
          (r"/", MainHandler),
      ])
  
  if __name__ == "__main__":
      app = make_app()
      app.listen(8888)
      tornado.ioloop.IOLoop.current().start()
subject: update code