9.3 异常的传递性

一、异常的传递

1. 所有的函数都没有捕获异常的时候，程序就会报错

2. 案例：

   def func1():
       print("func1开始")
       num= 1 / 0
       print("func1结束")
   
   
   def func2():
       print("func2开始")
       func1()
       print("func2结束")
   
   
   def main():
       func2()
   
   
   main()
   

   输出结果：

   func2开始 func1开始 Traceback (most recent call last): File "/Users/lonelysnow/project/PythonWork/learn/一/9/9.3.py", line 16, in main() File "/Users/lonelysnow/project/PythonWork/learn/一/9/9.3.py", line 14, in main func2() File "/Users/lonelysnow/project/PythonWork/learn/一/9/9.3.py", line 9, in func2 func1() File "/Users/lonelysnow/project/PythonWork/learn/一/9/9.3.py", line 3, in func1 num= 1 / 0 ZeroDivisionError: division by zero