tornado基本使用

1. tornado基本 
            
            import tornado.ioloop
            import tornado.web


            class IndexHandler(tornado.web.RequestHandler):
                def get(self):
                    self.write("Hello, world")
                    self.write("daqing")
                    


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



            if __name__ == "__main__":
                application.listen(8888)
                tornado.ioloop.IOLoop.instance().start() # 内部执行socket