try-except block:如果引发异常,则为'else'的模拟

Question

我有这样的代码:

try:
    return make_success_result()
except FirstException:
    handle_first_exception()
    return make_error_result()
except SecondException:
    handle_second_exception()
    return make_error_result()

我想知道有什么办法可以实现这个目标:

try:
    # do something
except Error1:
    # do Error1 specific handling
except Error2:
    # do Error2 specific handling
else:
    # do this if there was no exception
????:
    # ALSO do this if there was ANY of the listed exceptions (e.g. some common error handling)

因此代码以下列顺序之一执行:

try > else > finally
try > except > ???? > finally

编辑:我的观点是????块应该在任何except块之后执行,这意味着它是错误处理的补充,而不是替换.

Answer 1

在这种情况下我要做的是在你得到异常时设置一个布尔值,如下所示:

got_exception = False
try:
    # do something
except Error1:
    # do Error1 specific handling
    got_exception = True
except Error2:
    # do Error2 specific handling
    got_exception = True
else:
    # If there was no exception
finally:
    if got_exception:
        # ALSO do this if there was ANY exception (e.g. some common error handling)

这应该符合您的需求,这是IMO最简单的方法,将所有已呈现的解决方案组合到最易于调试的最易读的代码结构中.