使用flask模塊，登錄http://127.0.0.1:5000/，瀏覽器報錯The requested URL was not found on the server. If you entere

使用flask模塊，登錄http://127.0.0.1:5000/，瀏覽器報錯The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again. 在pycharm寫一個簡單的flask腳本，終端返回http://127.0.

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