"否则"认为在Python中有害吗？ [英] "else" considered harmful in Python?

问题描述

在答案中（通过 S.Lott）关于Python的的问题尝试...其他声明：

In an answer (by S.Lott) to a question about Python's try...else statement:

实际上，即使在if语句中，
else：也可以用真正可怕的
方式滥用，制造非常困难的错误
找到。 [...]

Actually, even on an if-statement, the else: can be abused in truly terrible ways creating bugs that are very hard to find. [...]

三思而后行：一般来说，这是
的问题。除了if-statement中的
之外，请避免使用它，甚至然后
考虑记录else-
条件以使其明确。

Think twice about else:. It is generally a problem. Avoid it except in an if-statement and even then consider documenting the else- condition to make it explicit.

这是一个广泛持有的观点吗？ 其他 被视为有害？

Is this a widely held opinion? Is else considered harmful?

当然，您可以用它编写令人困惑的代码，但对于任何其他语言构造都是如此。甚至Python的对于......其他在我看来也是一件非常方便的事情（对于来说更少...尝试...其他）。

Of course you can write confusing code with it but that's true of any other language construct. Even Python's for...else seems to me a very handy thing to have (less so for try...else).

推荐答案

S.Lott显然已经看到了一些不好的代码。我们都不是吗？我不认为其他有害的，虽然我已经看到它曾用于编写错误的代码。在这些情况下，所有周围的代码也都很糟糕，所以为什么要责怪其他人？

S.Lott has obviously seen some bad code out there. Haven't we all? I do not consider else harmful, though I've seen it used to write bad code. In those cases, all the surrounding code has been bad as well, so why blame poor else?

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