gh-98576: Fix types in dataclass.InitVar example

[hauntsaninja]

• Issue: Example in dataclass documentation is incorrectly typed #98576

[hauntsaninja]

cc @JelleZijlstra

[AlexWaygood]

LGTM

[AlexWaygood]

@ericvsmith, are you okay with this change? :)

It brings the example in the dataclasses docs up to date with revisions to PEP 484 that were made in 2018, in python/peps@0630155

[miss-islington]

Thanks @hauntsaninja for the PR, and @ericvsmith for merging it 🌮🎉.. I'm working now to backport this PR to: 3.10, 3.11.
🐍🍒⛏🤖

[miss-islington]

Sorry @hauntsaninja and @ericvsmith, I had trouble checking out the 3.11 backport branch.
Please retry by removing and re-adding the "needs backport to 3.11" label.
Alternatively, you can backport using cherry_picker on the command line.
cherry_picker 880bafc574bcd811dd7244f9a82056430b489996 3.11

[bedevere-bot]

GH-98909 is a backport of this pull request to the 3.10 branch.

[ericvsmith]

Looks good. Thanks!

Does someone want to look at the 3.11 merge conflict?

[miss-islington]

Thanks @hauntsaninja for the PR, and @ericvsmith for merging it 🌮🎉.. I'm working now to backport this PR to: 3.11.
🐍🍒⛏🤖

[bedevere-bot]

GH-98910 is a backport of this pull request to the 3.11 branch.

[AlexWaygood]

Looks good. Thanks!

Does someone want to look at the 3.11 merge conflict?

There was no merge conflict; just some sort of race condition that meant that @miss-islington was unable to check out the 3.11 branch. She succeeded on the second attempt :)

[ericvsmith]

Thanks!

[hauntsaninja]

@AlexWaygood where did you see the missislington logs? If you link me, I could take a look at fixing it :-)

[JelleZijlstra]

It's just the posted message I think. I recently improved the message in python/miss-islington@868b6ba; from there it may be possible to trace the code to figure out the actual bug.

This condition most frequently happens when trying to do multiple backports at once, like on this PR, which makes me think it may be a race condition where both backports try to use the same resource. However, I've also seen it happen on PRs that were backported only to a single branch.

[AlexWaygood]

Yes — to be clear, I don't have solid confirmation that a race condition is to blame; that's just my suspicion, given that removing and re-adding the label almost always seems to work :)