flask 报错求解？-灵析社区

服务端 from flask import Flask, request app = Flask(__name__) @app.route("/") def index(): pass def login(user): if request.method=="get": return f"Hello {user}" app.add_url_rule("/login/", view_func=login,methods=['POST', 'GET']) if __name__ == "__main__": app.run(debug=True) 客户端请求 url = ' http://*******/login/yyy' res = requests.get(url=url,headers=headers) 请求报错如下 TypeError: The view function for 'login' did not return a valid response. The function either returned None or ended without a return statement.