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GH-139922: update 3.15 whatsnew: Windows 64-bit binaries now use the tail-calling interpreter#146391

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GH-139922: update 3.15 whatsnew: Windows 64-bit binaries now use the tail-calling interpreter#146391
chris-eibl wants to merge 3 commits intopython:mainfrom
chris-eibl:msvc_tc_update_3.15.rst

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@chris-eibl chris-eibl commented Mar 24, 2026

now use the tail-calling interpreter
@chris-eibl chris-eibl requested a review from AA-Turner as a code owner March 24, 2026 20:03
@bedevere-app bedevere-app bot added docs Documentation in the Doc dir skip news labels Mar 24, 2026
@github-project-automation github-project-automation bot moved this to Todo in Docs PRs Mar 24, 2026
@chris-eibl chris-eibl requested review from Fidget-Spinner and hugovk and removed request for AA-Turner March 24, 2026 20:03

* The official Windows 64-bit binaries on python.org__ are now using the new
:ref:`tail-calling interpreter <whatsnew314-tail-call-interpreter>` since Python 3.15.0a8.
(Contributed by Ken Jin, Brandt Bucher and Chris Eibl in :gh:`143068`.
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@Fidget-Spinner Fidget-Spinner Mar 24, 2026

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I think technically you contributed this build change and not me nor the rest of us though?

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Yupp, I've done python/release-tools#346 with @zooba's help. Don't think we can / do link to release-tools here?

Thus, I've re-used the wording of #143068 blurb.

Maybe just link to https://docs.python.org/3.15/whatsnew/3.15.html#optimizations?

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