deco

example

def login_required(self,fn):
        def wrapped():
            session = request.environ.get('beaker.session')
            if session.get("user",0):
                return fn()
            else:
                return redirect("/login")
        return wrapped

@self.login_required
        @self.app.route('/')
        def index():
            gc.collect()
            return template('index', request=request)