关于后端渲染html页面给游览器

class IndexHandler(tornado.web.RequestHandler):
    def get(self):
        self.render('index.html')

if __name__ == '__main__':
    tornado.options.parse_command_line()
    app = tornado.web.Application(
        handlers=[(r'/', IndexHandler), (r'/poem', PoemPageHandler)],
        template_path=os.path.join(os.path.dirname(__file__), "templates")
    )
    http_server = tornado.httpserver.HTTPServer(app)
    http_server.listen(options.port)
    tornado.ioloop.IOLoop.instance().start()

#template其实是以下方式
#因此并没有实现前后端分离
>>>  from tornado.template import Template
>>> content = Template("
{{ header }}
")
>> print content.generate(header="Welcome!")
Welcome!</h1>></html>