線上報警 5xx 錯誤，查看日志發(fā)現(xiàn)報這個錯，

TypeError: The view function did not return a valid response. The function either returned None or ended without a return statement.

這個方法沒有有效的返回結(jié)果

頁面報這個錯誤

Internal Server Error

The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.

服務(wù)器遇到內(nèi)部錯誤，無法完成您的請求。服務(wù)器過載或應(yīng)用程序出錯。

?

代碼部分

1 # flask 請求不可以沒有返回值 2 # The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application. 3 import flask 4 5 from flask import Flask, request 6 7 app = Flask(__name__) 8 9 10 @app.route('/func') 11 # 展示數(shù)據(jù) 12 def func(): 13 return # 這塊有問題 14 # TypeError: The view function did not return a valid response. The function either returned None or ended without a return statement. 15 16 if __name__ == "__main__": 17 app.run(host='127.0.0.1',port='9090')

修改方法，加個返回值就好了。

轉(zhuǎn)載于:https://www.cnblogs.com/wzbk/p/11011115.html

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