Tornado-如何在另一个函数中调用处理程序

import tornado.ioloop
import tornado.web
import tornado.httpclient

class MyHandler(tornado.web.RequestHandler):
    def get(self):
        self.write("Hello, World!")

def make_app():
    return tornado.web.Application([
        (r"/", MyHandler),
    ])

def call_handler():
    app = make_app()
    url = app.reverse_url("MyHandler")  # 获取处理程序的URL
    http_client = tornado.httpclient.HTTPClient()
    response = http_client.fetch(url)  # 发送HTTP请求
    print(response.body)