gh-128213: fast path for bytes creation from list and tuple by eendebakpt · Pull Request #132590 · python/cpython · GitHub | Latest TMZ Celebrity News & Gossip | Watch TMZ Live
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gh-128213: fast path for bytes creation from list and tuple #132590

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@eendebakpt eendebakpt commented Apr 16, 2025

Continuation of #128214. This PR

  • Improves performance of bytes creation from a list or tuple
  • Fixes a free-threading bug
  • Reduces some duplicated code between list and tuple handling

Comment on lines 2871 to 2872
/* Py_None as a fallback sentinel to the slow path */
bytes = Py_None;
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Suggested change
/* Py_None as a fallback sentinel to the slow path */
bytes = Py_None;
/* Py_None as a fallback sentinel to the slow path */
Py_INCREF(Py_None);
bytes = Py_None;

Is needed, no?

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Py_None is immortal, so not needed

@eendebakpt eendebakpt marked this pull request as draft April 16, 2025 12:41
eendebakpt and others added 4 commits April 16, 2025 14:58
…e-128213.Y71jDi.rst

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
@eendebakpt eendebakpt marked this pull request as ready for review April 16, 2025 14:09
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