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TOML 1.1

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.

#142956 In python/cpython;

·AA-Turner openedon Dec 18, 2025

Cannot use format specifiers in argparse help

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.

#142950 In python/cpython;

·savannahostrowski openedon Dec 18, 2025

The new REPL floods the output when stdout is a broken pipe

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

topic-replRelated to the interactive shellRelated to the interactive shell

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

Status: Open.

#142948 In python/cpython;

·johnslavik openedon Dec 18, 2025

Support <code>&lt;LITERAL ELLIPSIS&gt;</code> in <code>doctest</code> module

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.

#142942 In python/cpython;

·user202729 openedon Dec 18, 2025

<code>difflib.get_close_matches</code> performance

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.

#142939 In python/cpython;

·dg-pb openedon Dec 18, 2025

Extract common bytecode retrieval logic from <code>_PyFrame_GetBytecode</code> and <code>_PyFrame_SafeGetLasti</code>

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

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

Status: Open.

#142929 In python/cpython;

·nybblista openedon Dec 18, 2025

argparse.HelpFormatter color argument removed in 3.15.0a3 without deprecation

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

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

Status: Open.

#142928 In python/cpython;

·hroncok openedon Dec 18, 2025

Improve Tachyon UX

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

topic-profiling

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#142927 In python/cpython;

·pablogsal openedon Dec 18, 2025

Context.items/keys/values docstrings claim lists but return iterators

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#142918 In python/cpython;

·hyongtao-code openedon Dec 18, 2025

memory leak <code>WARNING: invalid path to external symbolizer</code>

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.

#142917 In python/cpython;

·YuanchengJiang openedon Dec 18, 2025

<code>pathlib.Path.mkdir()</code> raises <code>FileExistsError</code> for non-existent path due to TOCTOU race condition

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

topic-pathlib

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

Status: Open.

#142916 In python/cpython;

·adriancaruana openedon Dec 18, 2025

Add test coverage for interpreter loop generator overridden insts

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

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#142913 In python/cpython;

·DinoV openedon Dec 18, 2025