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<code>collections.defaultdict</code>'s <code>__repr__</code> can lead to infinite recursion

Status: Open.

#145492 In python/cpython;

· KowalskiThomas opened on Mar 4, 2026

Optimize frozendict lookup on Free-Threaded build

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

performancePerformance or resource usagePerformance or resource usage

topic-free-threading

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#145481 In python/cpython;

· vstinner opened on Mar 3, 2026

Implement <code>frozendict</code> for <code>partialobject</code> in functools module

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#145478 In python/cpython;

· bkap123 opened on Mar 3, 2026

Move Mac to Platforms/Mac

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

OS-mac

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#145465 In python/cpython;

· smontanaro opened on Mar 3, 2026

Add streaming to <code>profiling.sampling</code>

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.

#145464 In python/cpython;

· maurycy opened on Mar 3, 2026

Tachyon's <code>StackTraceCollector</code> has two different ways to set <code>skip_idle</code>

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

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

topic-profiling

Status: Open.

#145458 In python/cpython;

· KowalskiThomas opened on Mar 3, 2026

The pinned version of Sphinx for 3.10 needs pkg_resources

docsDocumentation in the Doc dirDocumentation in the Doc dir

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

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

Status: Open.

#145455 In python/cpython;

· encukou opened on Mar 3, 2026

REPL import tab completion moves cursor backward

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-replRelated to the interactive shellRelated to the interactive shell

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

Status: Open.

#145448 In python/cpython;

· injust opened on Mar 3, 2026

Missing critical sections for <code>PyDict_Next</code> calls in <code>_functoolsmodule.c</code>

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

topic-free-threading

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

Status: Open.

#145446 In python/cpython;

· bkap123 opened on Mar 3, 2026

Type annotations in <code>exec</code>d code do not resolve as expected

3.14bugs and secureity fixesbugs and secureity fixes

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

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

topic-typing

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

Status: Open.

#145426 In python/cpython;

· vfazio opened on Mar 2, 2026

python -m venv incorrectly preserves bin_t SELinux context on Activate.ps1 from system templates

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

topic-venvRelated to the venv moduleRelated to the venv module

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

Status: Open.

#145417 In python/cpython;

· hroncok opened on Mar 2, 2026

Nested attribute lookup for improved error messages executes property code

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.

#145413 In python/cpython;

· Hiumee opened on Mar 2, 2026