aaaaa.py

# coding: utf-8
from tornado.ioloop import IOLoop
import tornado.web
from tornado import gen 
import time
import settings as Settings


class TestHandler(tornado.web.RequestHandler):
    @gen.coroutine
    def get(self):                                                                                                                                                                   
        print 'test'
        self.set_header('Content-Type', 'text/event-stream')
        self.set_header('Cache-Control', 'no-cache')
        self.write('hello world')
        self.flush()
        yield gen.Task(IOLoop.instance().add_timeout, time.time() + 5)
        self.write('other info')
        self.write('hahaha')
        yield gen.Task(IOLoop.instance().add_timeout, time.time() + 2)
        self.finish()


class MainHandler(tornado.web.RequestHandler):

    @gen.coroutine
    def get(self):
        print 'get'
        self.render('template.html')

application = tornado.web.Application([
            (r'/', MainHandler),
            (r"/test", TestHandler),
    ], template_path=Settings.TEMPLATE_PATH)


if __name__ == '__main__':
    application.listen(8888)
    IOLoop.instance().start()