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Avoid blindly shadowing existing exceptions through <code>PyErr_Format</code>

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

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

topic-C-API

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#139447 In python/cpython;

· picnixz opened on Sep 30, 2025

some tets will fail like test_pyrepl <code>when can't use pyrepl</code>

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

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

topic-replRelated to the interactive shellRelated to the interactive shell

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

Status: Open.

#139445 In python/cpython;

· yihong0618 opened on Sep 30, 2025

Removing pre-built PDF documentation from d.p.o

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#139436 In python/cpython;

· AA-Turner opened on Sep 29, 2025

Update selected RFC 2822 references to RFC 5322

docsDocumentation in the Doc dirDocumentation in the Doc dir

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

topic-email

Status: Open.

#139434 In python/cpython;

· filiplajszczak opened on Sep 29, 2025

_collections_abc._check_methods microoptimization

performancePerformance or resource usagePerformance or resource usage

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.

#139424 In python/cpython;

· BobTheBuidler opened on Sep 29, 2025

plistlib inherits expat's newline-normalizing behavior, which can corrupt data in XML plists

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.

#139423 In python/cpython;

· glyph opened on Sep 29, 2025

Fix portability of <code>sendfile(2)</code> support detection for Lustre filesystems

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

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.

#139416 In python/cpython;

· bnikolic opened on Sep 29, 2025

Issue with running <code>sudo</code> in <code>subprocess.Popen</code> if <code>/etc/sudoers</code> enables <code>use_pty</code>

OS-linux

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-subprocessSubprocess issues.Subprocess issues.

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

Status: Open.

#139412 In python/cpython;

· Wenzel opened on Sep 29, 2025

macOS 26 Liquid Glass effects not correctly displayed due to SDK

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

OS-ios

OS-mac

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

Status: Open.

#139404 In python/cpython;

· freakboy3742 opened on Sep 28, 2025

Heap-use-after-free issue in <code>pyexpat</code> related to <code>.ExternalEntityParserCreate</code>

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

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

3.9only security fixesonly security fixes

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

release-blocker

topic-XML

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

type-securityA security issueA security issue

Status: Open.

#139400 In python/cpython;

· hartwork opened on Sep 28, 2025

REPL does not show completions for some members of the Enum module

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

topic-replRelated to the interactive shellRelated to the interactive shell

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

Status: Open.

#139398 In python/cpython;

· RafaelWO opened on Sep 28, 2025

Resuming <code>python -m asyncio</code> process is not properly handled on Unix-like platforms

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

OS-linux

OS-mac

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

topic-replRelated to the interactive shellRelated to the interactive shell

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

Status: Open.

#139391 In python/cpython;

· yihong0618 opened on Sep 28, 2025