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GeezerVison is showing github.com — gh-139038: Add JIT What's New for 3.15 by savannahostrowski · Pull Request #142845 · python/cpython

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@savannahostrowski

@savannahostrowski savannahostrowski commented Dec 16, 2025 •
edited by bedevere-app Bot
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📚 Documentation preview 📚: https://cpython-previews--142845.org.readthedocs.build/

  • Issue: JIT Planning for 3.15 and 3.16 #139038

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@savannahostrowski
Add What's New for 3.15 JIT
26cdf15
@savannahostrowski
savannahostrowski requested a review from Fidget-Spinner December 16, 2025 22:01
@savannahostrowski
savannahostrowski requested a review from AA-Turner as a code owner December 16, 2025 22:01
@savannahostrowski savannahostrowski added docs Documentation in the Doc dir skip issue labels Dec 16, 2025
@github-project-automation github-project-automation Bot added this to Docs PRs Dec 16, 2025
@savannahostrowski savannahostrowski added the skip news label Dec 16, 2025
@github-project-automation github-project-automation Bot moved this to Todo in Docs PRs Dec 16, 2025
@bedevere-app bedevere-app Bot added the awaiting core review label Dec 16, 2025
@Fidget-Spinner
Fidget-Spinner requested a review from hugovk December 16, 2025 22:02
savannahostrowski and others added 2 commits December 16, 2025 14:02
@savannahostrowski
Fix formatting
a851fe1
@Fidget-Spinner
Move section down
cdeaf99
@Fidget-Spinner

Fidget-Spinner commented Dec 16, 2025

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Full disclosure: I wrote this together with Savannah. So I'd prefer a 3rd party approve.
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@Fidget-Spinner
add code formatting
ee16268
@picnixz picnixz changed the title Add JIT What's New for 3.15 gh-139038: Add JIT What's New for 3.15 Dec 16, 2025
@picnixz picnixz removed the skip issue label Dec 16, 2025
@bedevere-app bedevere-app Bot mentioned this pull request Dec 16, 2025
JIT Planning for 3.15 and 3.16 #139038
Open
4 of 19 tasks
AA-Turner
AA-Turner reviewed Dec 16, 2025
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brief review, but largely looks great!

A

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Fidget-Spinner added 3 commits December 16, 2025 22:55
@Fidget-Spinner
Address Adam's review
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@Fidget-Spinner
reformat
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@Fidget-Spinner
use rubric instead of title
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AA-Turner
AA-Turner reviewed Dec 17, 2025
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@bedevere-app bedevere-app Bot added awaiting merge and removed awaiting core review labels Dec 17, 2025
savannahostrowski and others added 2 commits December 16, 2025 18:09
@savannahostrowski @AA-Turner
Update 3.15.rst
b5bb5d9 
Co-authored-by: Adam Turner <[email protected]>
@savannahostrowski @AA-Turner
Apply suggestions from code review
4a0c773 
Co-authored-by: Adam Turner <[email protected]>
hugovk
hugovk reviewed Dec 17, 2025
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@Fidget-Spinner @hugovk
Apply suggestions from Hugo's review
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Co-authored-by: Hugo van Kemenade <[email protected]>
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Align style with rest of bullet points
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@Fidget-Spinner
Fidget-Spinner requested a review from hugovk December 17, 2025 12:02
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Thanks!

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@Fidget-Spinner @hugovk
Apply code review suggestions
bb76a0d 
Co-authored-by: Hugo van Kemenade <[email protected]>
@hugovk
hugovk enabled auto-merge (squash) December 17, 2025 12:13
@hugovk
hugovk merged commit 1fc3039 into python:main Dec 17, 2025
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@github-project-automation github-project-automation Bot moved this from Todo to Done in Docs PRs Dec 17, 2025
@bedevere-app bedevere-app Bot removed the awaiting merge label Dec 17, 2025
hugovk
hugovk reviewed Apr 17, 2026
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Comment thread Doc/whatsnew/3.15.rst
experience lower memory usage for generated machine code and more efficient
machine code versus the old JIT.

(Contributed by Brandt Bucher in :gh:`136528` and :gh:`136528`.

@hugovk hugovk Apr 17, 2026

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I just noticed these are the same PR number. What should the other one be? (And we generally link to issues.)

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I think 135905

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@hugovk hugovk Apr 17, 2026

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Thanks, fixed in #148686.

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@hugovk hugovk hugovk approved these changes
@AA-Turner AA-Turner AA-Turner approved these changes
@Fidget-Spinner Fidget-Spinner Awaiting requested review from Fidget-Spinner

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@savannahostrowski @Fidget-Spinner @hugovk @AA-Turner @picnixz
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