coroutine test

tornado_coroutine.py

import tornado.ioloop
import tornado.web

@tornado.gen.coroutine
def getstr():
    raise tornado.gen.Return("Hello coroutine")

class MainHandler(tornado.web.RequestHandler):
    @tornado.gen.coroutine
    def get(self):    
        gs = yield getstr()
        self.write(gs)

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

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