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No explicit way to create a TypeAliasType instance with a __module__ of choice

Status: Open.

#151607 In python/cpython;

· flying-sheep opened on Jun 17, 2026

3.15.0b2, openSUSE/Factory, i586: failing test: test_c_stack_unwind (specifically test_manual_unwind_finds_expected_frames)

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

Status: Open.

#151602 In python/cpython;

· mcepl opened on Jun 17, 2026

_pyio.TextIOBase.read is missing a size arg

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

Status: Open.

#151596 In python/cpython;

· ShaharNaveh opened on Jun 17, 2026

test_abc hangs on TSan Parallel Test on Free Threading

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

topic-free-threading

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

Status: Open.

#151593 In python/cpython;

· vstinner opened on Jun 17, 2026

_remote_debugging/module.c defines Py_MOD_GIL_NOT_USED twice

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

type-refactorCode refactoring (with no changes in behavior)Code refactoring (with no changes in behavior)

Status: Open.

#151584 In python/cpython;

· sobolevn opened on Jun 17, 2026

__future__ imports aren't always eager

3.15pre-release feature fixes, bugs and security fixespre-release feature fixes, bugs and security fixes

3.16new features, bugs and security fixesnew features, bugs and security fixes

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

topic-lazy-imports

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

Status: Open.

#151577 In python/cpython;

· brandtbucher opened on Jun 17, 2026

Deprecate passing file paths instead of URLs to mimetypes.guess_type()

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.

#151575 In python/cpython;

· NaveenKumarG-dev opened on Jun 17, 2026

test.test_importlib.resources.test_resource: AttributeError in from . import util

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

topic-importlib

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

Status: Open.

#151560 In python/cpython;

· ringobanana-3900 opened on Jun 16, 2026

tarfile.extractall(filter='data') allows symlink escape through hardlink-extraction fallback

3.10only security fixesonly security fixes

3.11only security fixesonly security fixes

3.12only security fixesonly security fixes

3.13bugs and security fixesbugs and security fixes

3.14bugs and security fixesbugs and security fixes

3.15pre-release feature fixes, bugs and security fixespre-release feature fixes, bugs and security fixes

3.16new 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-securityA security issueA security issue

Status: Open.

#151558 In python/cpython;

· StanFromIreland opened on Jun 16, 2026

CSV documentation doesn't provide example input

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#151556 In python/cpython;

· ShaharNaveh opened on Jun 16, 2026

sysconfig.get_config_var("CXX") now sometimes records an absolute path

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

topic-sysconfig

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

Status: Open.

#151547 In python/cpython;

· jameslamb opened on Jun 16, 2026

[CVE-2026-12003] In-tree search paths can be enabled without modifying install directory

3.11only security fixesonly security fixes

3.12only security fixesonly security fixes

3.13bugs and security fixesbugs and security fixes

3.14bugs and security fixesbugs and security fixes

3.15pre-release feature fixes, bugs and security fixespre-release feature fixes, bugs and security fixes

3.16new 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-securityA security issueA security issue

Status: Open.

#151544 In python/cpython;

· zooba opened on Jun 16, 2026