tornado -- hello world

import tornado.ioloop
import tornado.web

# 编写视图
class MainHandler(tornado.web.RequestHandler):
    def get(self):
        self.write("Hello, world")


def make_app():
    # 配置路由
    return tornado.web.Application([
        (r"/", MainHandler),
    ])

if __name__ == "__main__":
    app = make_app()
    #  监听端口
    app.listen(8888)

    # 启动
    tornado.ioloop.IOLoop.current().start()