tornado开始

$ pip install tornado==4.3

import tornado.web
import tornado.ioloop

class IndexHandler(tornado.web.RequestHandler):
     
    def initialize(self, subject):
        self.subject = subject

    def get(self, name):
        self.write("hello %s, at %s" % (name, self.subject))

def make_app():
    return tornado.web.Application([
        (r'/hello/(.*)',  IndexHandler, dict(subject="hello page"))
    ])

if __name__ == "__main__":
    app = make_app()
    app.listen(8000)
    tornado.ioloop.IOLoop.current().start()