如何追溯python3.7中引发的错误？

Question

我有一个典型的场景，其中有一个如下所示的模块：

def fun2():
   #does something which can throw a ValueError exception

def fun3():
   #does something which can throw a ValueError exception

def fun1:
   fun2() #call to fun2
   fun3() #call to fun3

def fun0:
   try:
       fun1()
   except ValueError as e: 
       ##try to find out from which function ValueError Exception is thrown 
       print(customErrorMsg)

我如何找出在fun0的除外块中，从fun2或fun3引发了错误？ 我尝试了e.__traceback__但是它没有提供有用的输出。 严格来说，当从fun2或fun3抛出异常时，我想打印不同的customErrorMsg 。

Answer 1

你可以这样做

def fun1:
    try:
        fun2() #call to fun2
    except ValueError as e:
        print(error_message)
    try:
        fun3() #call to fun3
    except ValueError as e:
        print(error_message)