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<code>test_sys</code> fails with <code>PYTHON_JIT_STRESS=1</code>

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

Status: Open.

#144991 In python/cpython;

· markshannon opened on Feb 19, 2026

Expose special method lookup at Python level

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#144989 In python/cpython;

· tanloong opened on Feb 19, 2026

Memory leak in <code>atexit.register()</code>: missing <code>Py_DECREF</code> for <code>func_args</code> tuple

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

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

Status: Open.

#144986 In python/cpython;

· ashm-dev opened on Feb 19, 2026

NULL deref + Double Py_DECREF in pyexpat ExternalEntityParserCreate()

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

topic-XML

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

Status: Open.

#144984 In python/cpython;

· raminfp opened on Feb 19, 2026

PyUnstable_Code_SetExtra and PyUnstable_Code_GetExtra are not thread-safe in free-threaded builds

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

topic-free-threading

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

Status: Open.

#144981 In python/cpython;

· yoney opened on Feb 18, 2026

wave: setframerate() accepts invalid frame rate values that round to zero

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.

#144975 In python/cpython;

· mbeijen opened on Feb 18, 2026

<code>dict_traverse</code> crash during PGO training on Windows with JIT enabled

OS-windows

topic-JIT

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

Status: Open.

#144970 In python/cpython;

· savannahostrowski opened on Feb 18, 2026

the usage of threshold1 for the GC is not correctly explained

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#144960 In python/cpython;

· arnaudlegout opened on Feb 18, 2026

-m asyncio -c 'await foo'

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

topic-asyncio

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#144958 In python/cpython;

· chrysn opened on Feb 18, 2026

PEP810 lazy from imports ignore module <code>__getattr__</code> when reifying

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

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

Status: Open.

#144957 In python/cpython;

· DavidCEllis opened on Feb 18, 2026

macOS dylib build is missing $(MODLIBS)

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

OS-mac

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

Status: Open.

#144942 In python/cpython;

· lunixbochs opened on Feb 18, 2026

Should an XKCD easter egg that introduces a vulnerability in CPython be removed from core distro?

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

type-securityA security issueA security issue

Status: Open.

#144938 In python/cpython;

· fproulx-boostsecurity opened on Feb 17, 2026