Tornado Gen Coroutine

tornadogenex.py

import tornado.web
import tornado.gen
from tornado.httpclient import AsyncHTTPClient

class GenAsyncHandler(tornado.web.RequestHandler):
    @tornado.gen.coroutine
    def get(self):
        http_client = AsyncHTTPClient()
        response = yield http_client.fetch("http://ip.jsontest.com")
        print(response)

application = tornado.web.Application([
    (r"/", GenAsyncHandler),
])

if __name__ == "__main__":
    application.listen(8888)
    tornado.ioloop.IOLoop.instance().start()