tornado异步客户端(Future)

先把可运行代码列出来, 注释和说明后续补充.

# -.- coding:utf-8 -.-
# __author__ = ‘zt‘

import tornado.ioloop
from tornado.concurrent import Future
from tornado.httpclient import AsyncHTTPClient

def async_fetch_future(url):
    http_client = AsyncHTTPClient()
    my_future = Future()
    fetch_future = http_client.fetch(url)
    fetch_future.add_done_callback(lambda f: my_future.set_result(f.result()))
    return my_future

def main():
    return async_fetch_future(‘http://www.qq.com‘).running()

if __name__ == ‘__main__‘:
    response = tornado.ioloop.IOLoop.instance().run_sync(main)
    print response.body

参考： <http://www.tornadoweb.org/en/stable/guide/async.html#examples>