`_utcfromtimestamp` is undefined in `datetimetester`

Bug report

This code cannot run correctly:

https://github.com/python/cpython/blob/55402d3232ca400ebafe4fe3bd70f252304ebe07/Lib/test/datetimetester.py#L6221-L6227

Because _utcfromtimestamp is not defined anywhere.

Introduced in https://github.com/python/cpython/commit/38dc3f28dde92b4fa6284a57f4e554991a3d9276 by @pganssle

I think that this is a typo, I will send a PR.

This was introduced when datetime.utcfromtimestamp was deprecated, I propose to use a direct alternative: datetime.fromtimestamp(t, datetime.UTC)

This problem is not detected by tests, because this looks like a in-test helper for module maintainers. It is not used as of right now.

Linked PRs

• gh-120267