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gh-124397: Add free-threading support for iterators.

awaiting core review

topic-free-threading

type-featureA feature request or enhancementA feature request or enhancement

Status: Open (in progress).

python/cpythonnumber 148894

#148894 In python/cpython;

· rhettinger opened on Apr 22, 2026

Remove hard-coded python version in Tools/pixi-packages #148858

buildThe build process and cross-buildThe build process and cross-build

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148887 In python/cpython;

· isuruf opened on Apr 22, 2026

Extend and improve LOAD_COMMON_CONSTANT

interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

performancePerformance or resource usagePerformance or resource usage

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148871 In python/cpython;

· markshannon opened on Apr 22, 2026

Add additional tests for isinf() function in cmath library

testsTests in the Lib/test dirTests in the Lib/test dir

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148868 In python/cpython;

· manoj-km24 opened on Apr 22, 2026

Add support for VISCII encoding in codecs

pendingThe issue will be closed if no feedback is providedThe issue will be closed if no feedback is provided

stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

topic-unicode

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148865 In python/cpython;

· henryivesjones opened on Apr 22, 2026

Deprecate BaseCookie.js_output() method

stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148849 In python/cpython;

· sethmlarson opened on Apr 21, 2026

Implement PEP 661 Sentinel Values

3.15new features, bugs and security fixesnew features, bugs and security fixes

interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148829 In python/cpython;

· JelleZijlstra opened on Apr 21, 2026

Allocate JIT memory in large chunks near the executable

interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

topic-JIT

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148822 In python/cpython;

· markshannon opened on Apr 21, 2026

Exceptions raised while parsing _interpreters configs do not name the offending key

interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

topic-subinterpreters

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148818 In python/cpython;

· rajkripal opened on Apr 21, 2026

Bump LLVM in CI sanitizer tests to 22

infraCI, GitHub Actions, buildbots, Dependabot, etc.CI, GitHub Actions, buildbots, Dependabot, etc.

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148806 In python/cpython;

· clin1234 opened on Apr 20, 2026

Expose message ID list from ReferencesHeader

stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

topic-email

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148797 In python/cpython;

· septatrix opened on Apr 20, 2026

Support Unix-like locales on Windows

3.15new features, bugs and security fixesnew features, bugs and security fixes

OS-windows

stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148792 In python/cpython;

· serhiy-storchaka opened on Apr 20, 2026