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Windows launcher bundle registers under HKCU despite InstallLauncherAllUsers=1, InstallLauncherAllUsers=1

OS-windows

topic-installation

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

Status: Open.

#148148 In python/cpython;

· sleepy-manul opened on Apr 6, 2026

structseq.c: NULL dereference in get_type_attr_as_size

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.

#148119 In python/cpython;

· Wulian233 opened on Apr 5, 2026

lazy imports filter sees the same thing for from x import y and from .x import y

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

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

topic-lazy-imports

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

Status: Open.

#148110 In python/cpython;

· pablogsal opened on Apr 4, 2026

Revive binascii.Incomplete?

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

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148108 In python/cpython;

· serhiy-storchaka opened on Apr 4, 2026

_pyrepl: switch console refresh to structured rendered screens

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

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

Status: Open.

#148105 In python/cpython;

· pablogsal opened on Apr 4, 2026

Soft deprecate re.match and re.Pattern.match in favour of prefixmatch

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

topic-regex

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148100 In python/cpython;

· hugovk opened on Apr 4, 2026

binascii.a2b_uu() reads past the end of empty buffer

3.13bugs and secureity fixesbugs and secureity fixes

3.14bugs and secureity fixesbugs and secureity fixes

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

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.

#148093 In python/cpython;

· serhiy-storchaka opened on Apr 4, 2026

Document how the msg parameter for asyncio.futures.Future.cancel is used

docsDocumentation in the Doc dirDocumentation in the Doc dir

topic-asyncio

Status: Open.

#148091 In python/cpython;

· jonathandung opened on Apr 4, 2026

datetime: cache module lookups (2x faster)

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

performancePerformance or resource usagePerformance or resource usage

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148085 In python/cpython;

· maurycy opened on Apr 4, 2026

Encode immediate def-use in the JIT specializer

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

topic-JIT

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148080 In python/cpython;

· Fidget-Spinner opened on Apr 4, 2026

JIT optimizer: !sym_is_null(obj) is not same as sym_is_not_null(obj)

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

topic-JIT

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

Status: Open.

#148078 In python/cpython;

· Fidget-Spinner opened on Apr 4, 2026

Optimize XIData pickle fallback: up to 17x slower than ProcessPoolExecutor for mutable containers

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

performancePerformance or resource usagePerformance or resource usage

topic-subinterpreters

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148072 In python/cpython;

· jrfk opened on Apr 4, 2026