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__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

Emit DeprecationWarning for file paths in mimetypes.guess_type()

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#151575 In python/cpython;

· NaveenKumarG-dev opened on Jun 17, 2026

Slot asyncio.Future

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#151572 In python/cpython;

· jonathandung 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

Deallocating highly nested list can cause stack overflow on Alpine Linux (musl)

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

OS-unsupported

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

Status: Open.

#151546 In python/cpython;

· vstinner 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

test_threading: ThreadingIteratorToolsTests crash with segfault on Alpine Linux (musl)

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

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

Status: Open.

#151542 In python/cpython;

· vstinner opened on Jun 16, 2026

test.test_asyncio.test_base_events failing on windows due to non-integer fileno() return

OS-windows

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

topic-asyncio

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

Status: Open.

#151540 In python/cpython;

· neek78 opened on Jun 16, 2026

Constructive Feedback on Python 3.14.x Installation Path Synchronization in Windows11

OS-windows

topic-installation

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

Status: Open.

#151539 In python/cpython;

· parsaesmaili038 opened on Jun 16, 2026