Sample addslash Tornado

app.py

import tornado.ioloop
import tornado.web


class AddSlashHandler(tornado.web.RequestHandler):

    @tornado.web.addslash
    def get(self):
        pass


class MainHandler(tornado.web.RequestHandler):

    def get(self):
        self.write("Hello, world")


def make_app():
    return tornado.web.Application([
        (r"/user/hello/", MainHandler),
        (r"/(user|service)/([^/]+)", AddSlashHandler)
    ])


if __name__ == "__main__":
    app = make_app()
    app.listen(8888)
    tornado.ioloop.IOLoop.current().start()

Docs https://www.tornadoweb.org/en/stable/web.html#tornado.web.addslash

Sample app https://www.tornadoweb.org/en/stable/guide/structure.html