PEP 13: Add STAR voting and misc tidbits

[gvanrossum]

• Because this is a process PEP, and specifically the one that defines the powers of the SC, the SC does not need to approve this PEP.
• PR title prefixed with PEP number (e.g. PEP 123: Summary of changes)

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📚 Documentation preview 📚: https://pep-previews--3958.org.readthedocs.build/pep-0013/

[gvanrossum]

Remember to fill in the actual date the PR was approved by a Discord poll (or some other significant date, maybe just the date the PR is merged).

[gpshead]

you can link to https://discuss.python.org/t/changing-pep-13-to-adopt-bloc-star-voting/64971 here.

[AA-Turner]

This suggestion uses a footnote -- I couldn't think of a nice way to incorporate the link other than linking the whole line or having a '(link)' trailer, which we try to avoid.

Suggested change

	2024-XX-XX: Adopted Multi-winner Bloc STAR voting for council elections.
	2024-10-09: Adopted Multi-winner Bloc STAR voting for council elections. [1]_
	.. [1] https://discuss.python.org/t/64971

[merwok]

In the PEP metadata, the dates in post-history are links to changesets, so the date could be made a link here too, unless you think it’s not intuitive.

[gvanrossum]

I think it's more appropriate for this to link to the vote that approved the change. The changeset/PR can easily be retrieved using GitHub or git blame; there's no easy wat to find the voting thread without explicitly linking it here.

[gvanrossum]

Question for the SC (primarily): If I were to commit this today, it would appear to affect the upcoming election for SC2025. That's not a good idea, because we'd have to scramble to figure out exactly how to run the election. So my plan has always been to make this go into effect for the election after the upcoming one, voting for SC2026.

I can think of a few ways to implement that plan:

• Update the text of the PR slightly to explicitly state "for elections in or after 2025" or some such. (Awkward: not the text that was voted for.)
• Update the PEP now with the unstated assumption that it goes into effect next year. Not great.
• Similar, but add a .. note:: explaining that it starts after June 2025, for example. (A little awkward, but we can always remove the note once it's no longer relevant.)
• Hold off merging this PR until the upcoming election is over. (Elegant, but that means about two months until we see the change.)

What would the current SC prefer that I do?

[gvanrossum]

What would the current SC prefer that I do?

I made a mistake here -- since PEP 13 defines the SC's powers, it's inappropriate for the SC to be involved here. I've decided to just postpone committing this PR until the upcoming election is done. See the discussion in Discourse.