[issue2604] doctest.DocTestCase fails when run repeatedly

[Irit Katriel]

Irit Katriel <iritkatriel at gmail.com> added the comment:

I've reproduced this on 3.11 as well.

The patch here needs to be converted to a GitHub PR and then tested and reviewed.

The patch on issue9736 has a unit test as well, which should be included (because the pjd's patch doesn't have one).

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keywords: +easy
nosy: +iritkatriel
versions: +Python 3.11

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