from flask import Flask

from tornado.wsgi import WSGIContainer

from tornado.httpserver import HTTPServer

from tornado.ioloop import IOLoop

app = Flask(__name__)

@app.route("/")

def hello():

　　return "Hello World!" 

if __name__ == "__main__":

　　http_server=HTTPServer(WSGIContainer(app))

　　http_server.listen(8000)

　　IOLoop.instance().start()