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Metaclasses with type annotated attributes do not add __annotations__ = {} to derived classes.

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

Status: Open.

#149208 In python/cpython;

· matthewwardrop opened on May 1, 2026

JIT: add _RROT_3 uop to reduce stack moves

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#149204 In python/cpython;

· NekoAsakura opened on Apr 30, 2026

Implement PEP 831 – Frame Pointers Everywhere: Enabling System-Level Observability for Python

Status: Open.

#149202 In python/cpython;

· pablogsal opened on Apr 30, 2026

_PyExecutorObject is exposed to the stable ABI due to indirect use in PyCodeObject

topic-C-API

topic-JIT

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

Status: Open.

#149196 In python/cpython;

· Fidget-Spinner opened on Apr 30, 2026

Modern defaults for pprint

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.

#149189 In python/cpython;

· hugovk opened on Apr 30, 2026

frozendict not mentioned in functions.rst

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#149187 In python/cpython;

· oyvindronningstad opened on Apr 30, 2026

t-string tokeniser reports MemoryError on invalid input

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.

#149183 In python/cpython;

· KowalskiThomas opened on Apr 30, 2026

Avoid double checking tp_as_number, tp_as_sequence and tp_as_mapping

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.

#149180 In python/cpython;

· markshannon opened on Apr 30, 2026

Pdb: inverted PYTHON_BASIC_REPL check in _pyrepl_available()

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.

#149173 In python/cpython;

· tanloong opened on Apr 30, 2026

Make TypeAliasType __module__ attribute writable

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

topic-typing

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#149171 In python/cpython;

· ericmarkmartin opened on Apr 30, 2026

pyrepl autocomplete from x import <tab> to only display public members

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#149167 In python/cpython;

· mpkocher opened on Apr 30, 2026

test_capi fails with HWASan

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

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

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

Status: Open.

#149165 In python/cpython;

· fmayer opened on Apr 30, 2026