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# coding=utf-8

from tornado import web, httpserver, ioloop

from tornado.options import define, options

define('port', default=8000, help='run on the given port', type=int)

class IndexHandler(web.RequestHandler):

def get(self):

greeting = self.get_argument('greeting', 'Hello')

self.write(greeting + ', friendly user!')

def write_error(self, status_code, **kwd):

self.write("It's a pity! You cause a {} error!".format(status_code))

if __name__ == '__main__':

options.parse_command_line()

app = web.Application(handlers=[(r'/', IndexHandler)], debug=True)

http_server = httpserver.HTTPServer(app)

http_server.listen(options.port)

ioloop.IOLoop.instance().start()