gevent_tornado.py

#!/usr/bin/python


import tornado.httpclient
import tornado.ioloop
import gevent


def on_complete(data):
    print data.body[0:10]

def print_head(url):
    print ('Starting %s' % url)
    http = tornado.httpclient.AsyncHTTPClient()
    http.fetch("http://friendfeed.com", on_complete)

jobs = [gevent.spawn(print_head, url) for url in range(0, 50)]
gevent.joinall(jobs)

tornado.ioloop.IOLoop.instance().start()