調用棧

若是錯誤沒有被捕獲，它就會一直往上拋，最後被Python解釋器捕獲，打印一個錯誤信息，而後程序退出

經過錯誤信息，能夠追根溯源查到最終的錯誤緣由

 

    def foo(s):
        return 10 / int(s)

    def bar(s):
        return foo(s) * 2

    def main():
        bar('0')

    main()
    
    #輸出：
    Traceback (most recent call last):
      File "err.py", line 11, in <module>
        main()
      File "err.py", line 9, in main
        bar('0')
      File "err.py", line 6, in bar
        return foo(s) * 2
      File "err.py", line 3, in foo
        return 10 / int(s)
    ZeroDivisionError: division by zero