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打印Python异常信息的几种方式

1 简单的异常信息

try:
    a = 1/0
except Exception as e:
    print(e)

打印最简单的message信息：

division by zero

2 更完整的信息

import traceback

try:
    a = 1/0
except Exception as e:
    print('str(e):\t', e)
    print('repr(e):\t', repr(e))

    print('traceback.format_exc():\n%s' % traceback.format_exc()) #字符串
    traceback.print_exc() #执行函数

输出：

str(e):         division by zero
repr(e):     ZeroDivisionError('division by zero')
traceback.format_exc():
Traceback (most recent call last):
  File "/Users/ace/Play/test/异常信息.py", line 4, in <module>
    a = 1/0
ZeroDivisionError: division by zero

Traceback (most recent call last):
  File "/Users/ace/Play/test/异常信息.py", line 4, in <module>
    a = 1/0
ZeroDivisionError: division by zero


traceback.format_exc()

和

traceback.print_exc()

都可以打印完整的错误信息


traceback.format_exc()

返回值为字符串


traceback.print_exc()

是一个执行函数，直接在控制台打印错误信息