Tornado，了解一下

多了解不一样的PYTHON框架，对深入了解DJANGO，总是有帮助的。

import textwrapimport tornado.httpserverimport tornado.ioloopimport tornado.optionsimport tornado.webfrom tornado.options import define, optionsdefine("port", default=8000, help="run on the given port", type=int)class IndexHandler(tornado.web.RequestHandler):    def get(self):        greeting = self.get_argument('greeting', 'Hello')        self.write(greeting + ', friendly user!')class ReverseHandler(tornado.web.RequestHandler):    def get(self, input):        self.write(input[::-1])class WrapHandler(tornado.web.RequestHandler):    def post(self):        text = self.get_argument('text')        width = self.get_argument('width', 40)        self.write(textwrap.fill(text, int(width)))if __name__ == "__main__":    tornado.options.parse_command_line()    app = tornado.web.Application(        handlers=[            (r"/", IndexHandler),            (r"/reverse/(\w+)", ReverseHandler),            (r"/wrap/", WrapHandler)            ]        )    http_server = tornado.httpserver.HTTPServer(app)    http_server.listen(options.port)    tornado.ioloop.IOLoop.instance().start()