import tornado.ioloop

import tornado.web

class MainHandler(tornado.web.RequestHandler):

    def get(self):

        self.write("Hello, world")

class TestHandler(tornado.web.RequestHandler):

    def get(self):

        self.write("Hello Evilxr,This is you's Python!")

application = tornado.web.Application([

    (r"/", MainHandler),

    (r"/test",TestHandler),

])

if __name__ == "__main__":

    application.listen(8888)

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

退出VI 后运行该脚本

root@IdeaPad:~/test# python one.py