python traceback模块

1、traceback.print_exc()
2、traceback.format_exc()
3、traceback.print_exception()

1、print_exc()：是对异常栈输出
2、format_exc()：是把异常栈以字符串的形式返回，print(traceback.format_exc()) 就相当于traceback.print_exc()
3、print_exception()：traceback.print_exc()实现方式就是traceback.print_exception(sys.exc_info())，可以点sys.exc_info()进去看看实现

 

def func(a, b):
    return a / b


if __name__ == '__main__':
    import sys
    import time
    import traceback

    try:
        func(1, 0)
    except Exception as e:
        print('***', type(e), e, '***')
        time.sleep(2)

        print("***traceback.print_exc():*** ")
        time.sleep(1)
        traceback.print_exc()
        time.sleep(2)

        print("***traceback.format_exc():*** ")
        time.sleep(1)
        print(traceback.format_exc())
        time.sleep(2)

        print("***traceback.print_exception():*** ")
        time.sleep(1)
        traceback.print_exception(*sys.exc_info())