tornado

import tornado.web
import tornado.ioloop

li = []

class IndexHandler(tornado.web.RequestHandler):

    def get(self):
        self.render('index.html', show_list=li)

    def post(self, *args, **kwargs):
        input_value = self.get_argument('input_value')
        li.append(input_value)
        self.render('index.html', show_list=li)

settings = {
    'template_path': 'tpl',
    'static_path': 'static',
    'static_url_prefix': '/static/',
}

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

if __name__ == '__main__':
    application.listen(8888)
    tornado.ioloop.IOLoop.instance().start()