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JIT x Free-Threading

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

topic-free-threading

topic-JIT

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#141594 In python/cpython;

· Fidget-Spinner opened on Nov 15, 2025

test_perf_profiler: race condition when cleaning up perf-*.map files

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

topic-profiling

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#141592 In python/cpython;

· pareshjoshij opened on Nov 15, 2025

<code>doctest.OutputChecker</code> with <code>doctest.NORMALIZE_WHITESPACE|doctest.ELLIPSIS</code> flag cannot match <code> ... </code> with <code> </code>

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.

#141587 In python/cpython;

· user202729 opened on Nov 15, 2025

Provide custom error messages for overflows in PyLong_AsLong/PyLong_AsInt()

easy

topic-C-API

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#141578 In python/cpython;

· skirpichev opened on Nov 15, 2025

argparse color=False calls _set_color(True) first, then _set_color(False) -- leading to needless envirnment lookups

3.14bugs and security fixesbugs and security fixes

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

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

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#141571 In python/cpython;

· hroncok opened on Nov 14, 2025

_colorize.can_colorize() raises when sys.stdout is mod_wsgi logger

3.14bugs and security fixesbugs and security fixes

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

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

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#141570 In python/cpython;

· hroncok opened on Nov 14, 2025

Add async awareness to Tachyon profiler

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

topic-profiling

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#141565 In python/cpython;

· savannahostrowski opened on Nov 14, 2025

The <code>datetime</code> C API is not thread-safe

3.13bugs and security fixesbugs and security fixes

3.14bugs and security fixesbugs and security fixes

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

extension-modulesC modules in the Modules dirC modules in the Modules dir

topic-C-API

topic-free-threading

topic-subinterpreters

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#141563 In python/cpython;

· ZeroIntensity opened on Nov 14, 2025

<code>inspect.getfullargspec</code> isn't ready for deferred evaluation of annotations

3.14bugs and security fixesbugs and security fixes

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

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

topic-typing

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#141560 In python/cpython;

· jacobtylerwalls opened on Nov 14, 2025

PyLong_AsInt32/64() are slow c.f. PyLong_AsLongAndOverflow()

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

performancePerformance or resource usagePerformance or resource usage

topic-C-API

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#141546 In python/cpython;

· skirpichev opened on Nov 14, 2025

memory leak in <code>_PyJit_TryInitializeTracing</code>

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

topic-JIT

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#141542 In python/cpython;

· YuanchengJiang opened on Nov 14, 2025

strptime: use %r in error messages, not %s

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

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#141540 In python/cpython;

· alexwlchan opened on Nov 14, 2025