如何在Python脚本上动态启用/禁用Tornado Auth？

import tornado.web
import tornado.ioloop
from tornado.options import define, options

define("enable_auth", default=True, help="Enable Tornado Auth")

class MainHandler(tornado.web.RequestHandler):
    def get(self):
        self.write("Hello, World!")

def make_app():
    if options.enable_auth:
        app = tornado.web.Application([
            (r"/", MainHandler),
        ], autoreload=True, debug=True)
    else:
        app = tornado.web.Application([
            (r"/", MainHandler),
        ], autoreload=True, debug=True, login_url="/login")
    return app

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