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Clarify recommended debug workflow in Quickstart documentation

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#145161�?In python/cpython;

· adenbad opened on Feb 23, 2026

Add support for PEP 813 - The Pretty Print Protocol

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#145153�?In python/cpython;

· warsaw opened on Feb 23, 2026

Add more tests for UserList, UserDict, etc

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

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#145144�?In python/cpython;

· serhiy-storchaka opened on Feb 23, 2026

str.maketrans on a mutating dict is not thread-safe

easy

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

topic-free-threading

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

Status: Open.

#145142�?In python/cpython;

· eendebakpt opened on Feb 23, 2026

Specialized <code>STORE_SUBSCR_DICT</code> allows silent mutation of <code>frozendict</code> after adaptive specialization

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.

#145122�?In python/cpython;

· Abdoulrasheed opened on Feb 22, 2026

Consider allowing frozendicts to be assigned to instance dicts

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.

#145119�?In python/cpython;

· rhettinger opened on Feb 22, 2026

Support frozendict in various builtins

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.

#145118�?In python/cpython;

· rhettinger opened on Feb 22, 2026

pprint.isreadable() returns True for float('inf'), float('-inf'), float('nan')

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.

#145117�?In python/cpython;

· zetzschest opened on Feb 22, 2026

simplify asyncio staggered_race

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

topic-asyncio

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

Status: Open.

#145107�?In python/cpython;

· graingert opened on Feb 22, 2026

<code>_csv.reader</code>: NULL deref via re-entrant iterator

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

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

Status: Open.

#145105�?In python/cpython;

· raminfp opened on Feb 22, 2026

CI: move Apple Silicon macOS workflows to macos-26 (Tahoe)

infraCI, GitHub Actions, buildbots, Dependabot, etc.CI, GitHub Actions, buildbots, Dependabot, etc.

OS-mac

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#145098�?In python/cpython;

· clintonsteiner opened on Feb 22, 2026

Fully single-module lazy imports are not recorded in <code>sys.lazy_modules</code>

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.

#145059�?In python/cpython;

· johnslavik opened on Feb 20, 2026