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fyyz
V2EX    Python

python 如何优雅地抛出异常

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  •   fyyz 2015-09-30 13:27:29 +08:00 4536 次点击
    这是一个创建于 3665 天前的主题,其中的信息可能已经有所发展或是发生改变。

    如果我执行错误的代码, python 原生的抛出异常能处理得非常优雅:

    >>> print a File "<stdin>", line 1 print a ^ SyntaxError: Missing parentheses in call to 'print' 

    自己写的代码如何才能这么优雅地抛出异常呢?

    第 1 条附言    2015-09-30 14:25:51 +08:00
    恩,我指的就是下面的这个 "^"
    6 条回复    2015-10-03 12:05:37 +08:00
    clino
        1
    clino  
       2015-09-30 13:32:58 +08:00
    我感觉你是想说打印出 traceback 吧?
    chengzhoukun
        2
    chengzhoukun  
       2015-09-30 13:36:37 +08:00
    http://blog.csdn.net/handsomekang/article/details/9373035

    import traceback
    try:
    print a
    except Exception as e:
    traceback.print_exc()
    chengzhoukun
        3
    chengzhoukun  
       2015-09-30 13:40:17 +08:00
    fengjianxinghun
        4
    fengjianxinghun  
       2015-09-30 14:05:40 +08:00
    抛异常和捕获是 2 个事吧。。。
    DiffView
        5
    DiffView  
       2015-10-01 00:55:05 +08:00
    写个 log 模块比如 https://www.fancycoding.com/custom-python-log-module/
    然后
    try:
    momoda
    except Exception as e:
    LogC(self, traceback.format_exc())

    得到
    2014-12-06 15:10:56,818 - C - CRITICAL - you can't momoda me
    deangl
        6
    deangl  
       2015-10-03 12:05:37 +08:00 via Android
    logging.exception(e)
    这个?
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