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Unable to inspect class with <code>cyfunction __init__</code> due to unwrap and descriptor behavior changed

stdlibPython modules in the Lib dirPython modules in the Lib dir

topic-dataclasses

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

Status: Open.

#137317 In python/cpython;

· yanyongyu opened on Aug 2, 2025

Raw f-string format spec undocumented behavior change between 3.11 and 3.12

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

topic-parser

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

Status: Open.

#137314 In python/cpython;

· MeGaGiGaGon opened on Aug 1, 2025

Create <code>unittest</code> assertRaises conventions for exception groups

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#137311 In python/cpython;

· gpshead opened on Aug 1, 2025

<code>compile</code> fails on 3.14 on a valid expression when <code>-OO</code> is set

3.14bugs and security fixesbugs and security fixes

3.15new 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-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#137308 In python/cpython;

· tybug opened on Aug 1, 2025

Assertion failure when interrupting active threads for subinterpreters

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

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

topic-subinterpreters

type-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump

Status: Open.

#137295 In python/cpython;

· neonene opened on Aug 1, 2025

SystemError: &lt;built-in function remote_exec&gt; returned a result with an exception set

3.14bugs and security fixesbugs and security fixes

3.15new 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-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#137293 In python/cpython;

· godlygeek opened on Aug 1, 2025

Support perf profiler with an evaluation hook

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#137291 In python/cpython;

· DinoV opened on Jul 31, 2025

Python implicit boolean conversion in logical operations bypasses try/except on 3.14.0rc1

3.14bugs and security fixesbugs and security fixes

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

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

release-blocker

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

Status: Open.

#137288 In python/cpython;

· justinjfu opened on Jul 31, 2025

Tab completion / dir broken on concurrent.futures

3.14bugs and security fixesbugs and security fixes

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

release-blocker

stdlibPython modules in the Lib dirPython modules in the Lib dir

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

Status: Open.

#137282 In python/cpython;

· henryiii opened on Jul 31, 2025

Micro-ops that have side-exits are sometimes marked as "escaping", when they should not be.

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

performancePerformance or resource usagePerformance or resource usage

topic-JIT

Status: Open.

#137276 In python/cpython;

· markshannon opened on Jul 31, 2025

locale.setlocale() crashes on Windows for long locale name

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

OS-windows

type-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump

Status: Open.

#137273 In python/cpython;

· serhiy-storchaka opened on Jul 31, 2025

Update bundled pip to 25.2

dependenciesPull requests that update a dependency filePull requests that update a dependency file

stdlibPython modules in the Lib dirPython modules in the Lib dir

topic-ensurepip

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#137257 In python/cpython;

· ichard26 opened on Jul 30, 2025