M.-A. Lemburg wrote:
The question is whether it would encourage conditional work-arounds.


-1. That only makes the code more complicated.

You misunderstand. I'm not proposing that the work-around is added to Python. I'm saying that Python *users* might introduce such work-arounds to their code.

+1. Application writers can add tests for the correct version
of Python to their application and give a warning to the user
in case the version doesn't match.

Application writers typically don't do that if they can find a work-around, because that means less hassle for their users. They accept that the code will get more complicated because of the work-around, and blame Python for having this bug in the first place.

In any case, I can't backport the os.access change without explicit
permission from Anthony.

Regards,
Martin

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