Implement PEP 798 – Unpacking in Comprehensions

[adqm]

Proposal:

This is a tracking issue for implementing PEP 798 (Unpacking in Comprehensions).

Links to previous discussion of this feature:

• https://discuss.python.org/t/pre-pep-unpacking-in-comprehensions/96362
• https://discuss.python.org/t/pep-798-unpacking-in-comprehensions/99435

Linked PRs

• gh-143055: Implementation of PEP 798 #143056
• gh-143055: Fix crash in AST unparser when unparsing dict comprehension unpacking #145556

[hugovk]

Good work, #143056 is merged and will be in next week's 3.15 alpha 6! 🎉

Anything else to do here, or shall we close this issue?

[adqm]

Yep, I think we're good here! The initial implementation is done, and I feel like if anything comes up with it, it'd probably be better as a new issue. I'll go ahead and close this now; thanks!

[hugovk]

Sounds good! Would you like to open a PR to mark the PEP as Final? There's a checklist at https://github.com/python/peps/blob/main/.github/PULL_REQUEST_TEMPLATE/Mark%20a%20PEP%20as%20Final.md.

[StanFromIreland]

Reopening for #145556, the AST unparser was not updated appropriately.