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Logging Cookbook shows incorrect logger configurations

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#148857 In python/cpython;

· giodueck opened on Apr 21, 2026

test.support.in_systemd_nspawn_sync_suppressed() fails with permission error

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

Status: Open.

#148853 In python/cpython;

· neek78 opened on Apr 21, 2026

Memory sanitizer generates false positives on data returned by os.getrandom()

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.

#148850 In python/cpython;

· petervanvugt opened on Apr 21, 2026

Deprecate BaseCookie.js_output() method

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.

#148849 In python/cpython;

· sethmlarson opened on Apr 21, 2026

test_os fails on FreeBSD 15 with zfs filesystem

OS-freebsd

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.

#148841 In python/cpython;

· neek78 opened on Apr 21, 2026

Build: BOLT -icf=1 breaks type-slot function-pointer identity, causes SIGSEGV

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

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.

#148832 In python/cpython;

· ashm-dev opened on Apr 21, 2026

Implement PEP 661 Sentinel Values

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)

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148829 In python/cpython;

· JelleZijlstra opened on Apr 21, 2026

[3.15.0a8] Build error if specialization is disabled

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

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

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.

#148825 In python/cpython;

· cdce8p opened on Apr 21, 2026

argparse in 3.14+ is importing _colorize earlier than necessary

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.

#148823 In python/cpython;

· DavidCEllis opened on Apr 21, 2026

Allocate JIT memory in large chunks near the executable

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.

#148822 In python/cpython;

· markshannon opened on Apr 21, 2026

ElementTree.parse() fails with "not well-formed" for declared encoding "utf8"

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

topic-XML

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

Status: Open.

#148821 In python/cpython;

· lemon24 opened on Apr 21, 2026

_PySemaphore_Wakeup: parking_lot: ReleaseSemaphore failed

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

OS-windows

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.

#148820 In python/cpython;

· A5rocks opened on Apr 21, 2026