#!/usr/bin/env python
#coding:utf-8

import tornado.httpserver
import tornado.ioloop
import tornado.options
import tornado.web

from tornado.options import define, options
define("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 + ', welcome you to read: www.itdiffer.com')

if __name__ == "__main__":
 tornado.options.parse_command_line()
 app = tornado.web.Application(handlers=[(r"/", IndexHandler)])
 http_server = tornado.httpserver.HTTPServer(app)
 http_server.listen(options.port)
 tornado.ioloop.IOLoop.instance().start()