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Use write instead of stream.write in PrettyPrinter._pprint_frozendict

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.

#145887 In python/cpython;

· devdanzin opened on Mar 12, 2026

Event.raw being added to itself instead of to another event's .raw in UnixConsole.getpending

easy

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.

#145886 In python/cpython;

· devdanzin opened on Mar 12, 2026

_zoneinfo: heap buffer overflow reads from malformed TZif data

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

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

Status: Open.

#145883 In python/cpython;

· StanFromIreland opened on Mar 12, 2026

AttributeErrors raised in .keys() or .__getitem__() during {**mymapping}are incorrectly masked

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

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

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

Status: Open.

#145876 In python/cpython;

· NickCrews opened on Mar 12, 2026

annotationlib.get_annotations() docstring references an incorrect Format variant

3.14bugs and security fixesbugs and security fixes

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

docsDocumentation in the Doc dirDocumentation in the Doc dir

topic-typing

Status: Open.

#145870 In python/cpython;

· egormanga opened on Mar 12, 2026

Suggest a future feature name in from __future__ import

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.

#145868 In python/cpython;

· Locked-chess-official opened on Mar 12, 2026

Convert more uops to leave their inputs on the stack to be cleaned up by _POP_TOP

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)

performancePerformance or resource usagePerformance or resource usage

topic-JIT

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#145866 In python/cpython;

· markshannon opened on Mar 12, 2026

trace.CoverageResults.__init__ does not copy the counts dict

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.

#145865 In python/cpython;

· stefanzetzsche opened on Mar 12, 2026

sys.set_lazy_imports_filter(...): Relative imports indistinguishable from absolute imports

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.

#145864 In python/cpython;

· USSX-Hares opened on Mar 12, 2026

BUILD_INTERPOLATION and BUILD_TEMPLATE perform unnecessary refcount operations

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

performancePerformance or resource usagePerformance or resource usage

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#145860 In python/cpython;

· markshannon opened on Mar 12, 2026

Remove DELETE_DEREF bytecode instruction

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

performancePerformance or resource usagePerformance or resource usage

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#145858 In python/cpython;

· markshannon opened on Mar 12, 2026

Remove DELETE_GLOBAL bytecode instruction

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

performancePerformance or resource usagePerformance or resource usage

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#145857 In python/cpython;

· markshannon opened on Mar 12, 2026