[issue32683] isinstance is calling ob.__getattribute__ as a fallback instead of object.__class__.__get__

[Gabriele N Tornetta]

Gabriele N Tornetta <phoenix1987 at gmail.com> added the comment:

I think the issue on display here is that isinstance could cause a side effect, which I dare say it's unexpected (and not documented AFAIK). Are there any reasons why __class__ cannot be retrieved with object.__getattribute__ instead? In fact, considering that __getattribute__ could be overridden, this would be the right thing to do imho, else isinstance would break spectacularly, like in my previous example.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue32683>
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