Flask - 訪問返回字典的接口報錯：The view function did not return a valid response. The return type must be a string, tuple, Response instance, or WSGI callable, but it was a dict.

背景

有一個 Flask 項目，然后有一個路由返回的是 dict

 

通過瀏覽器訪問，結果報錯

 

關鍵報錯信息

TypeError: 'dict' object is not callable
The view function did not return a valid response. The return type must be a string, tuple, Response instance, or WSGI callable, but it was a dict.

意思是不能返回 dict

 

解決方案

結果是版本太老了，用的 Flask 1.0.2....我服了，之前跑別人的項目裝了個老版 Flask，裝個最新版本就好了...