[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:

The following example shows isinstance causing a side effect


class Side:

    class Effect(Exception):
        pass

    def __getattribute__(self, name):
        raise Side.Effect()


isinstance(Side(), str)


I'd be inclined to see this as a bug as I wouldn't expect isinstance to cause any side effects.

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nosy: +Gabriele Tornetta

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