如何防止“过于广泛的例外”？在这种情况下？

问题描述：

我列出了可能会失败的功能，如果失败，我不希望脚本停止运行，而是继续下一个功能。

I got a list of functions that may fail, and if one fail, I don't want the script to stop, but to continue with next function.

我用这样的东西执行它：

I am executing it with something like this :

list_of_functions = [f_a,f_b,f_c]
for current_function in list_of_functions:
    try:
        current_function()
    except Exception:
        print(traceback.format_exc())

工作正常，但不符合PEP8：

It's working fine, but it is not PEP8 compliant:

在捕获异常时，请提及可能的特定例外，只要
可以使用而不使用裸的else：子句即可。

When catching exceptions, mention specific exceptions whenever possible instead of using a bare except: clause.

例如，使用：

try:
    import platform_specific_module
except ImportError:
    platform_specific_module = None

一个空的except：子句将捕获SystemExit和KeyboardInterrupt
异常，这使得中断程序更加困难使用Control-C，
并可以掩盖其他问题。如果您想捕获所有表示程序错误的异常
，请使用Exception除外：（裸除
等效于BaseException：除外）。

A bare except: clause will catch SystemExit and KeyboardInterrupt exceptions, making it harder to interrupt a program with Control-C, and can disguise other problems. If you want to catch all exceptions that signal program errors, use except Exception: (bare except is equivalent to except BaseException: ).

一个好的经验法则是将仅使用'except'子句限制为两个
情况：

A good rule of thumb is to limit use of bare 'except' clauses to two cases:

如果异常处理程序将打印输出或记录回溯;

If the exception handler will be printing out or logging the traceback; at least the user will be aware that an error has occurred.

如果代码需要执行一些清理工作，但随后让异常通过raise向上传播，则至少用户会意识到发生了错误。试试...最后可以是一种更好的
处理这种情况的方法。

If the code needs to do some cleanup work, but then lets the exception propagate upwards with raise . try...finally can be a better way to handle this case.

如何用这种好方法？

答

您引用的PEP8指南建议，在记录错误的情况下，可以在情况下使用裸露的异常。我认为您应该涵盖尽可能多的例外/知道如何处理，然后记录其余例外并通过，例如

The PEP8 guide you quote suggests that it is okay to use a bare exception in your case provided you are logging the errors. I would think that you should cover as many exceptions as you can/know how to deal with and then log the rest and pass, e.g.

import logging

list_of_functions = [f_a,f_b,f_c]
for current_function in list_of_functions:
    try:
        current_function()
    except KnownException:
        raise
    except Exception as e:
        logging.exception(e)

如何防止“过于广泛的例外”？在这种情况下？

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