Search results

Split "Percentage" in tachyon flamegraph tooltip UI to "Percentage of Root" and "Percentage of Selected"

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.

#150258 In python/cpython;

· scottshambaugh opened on May 22, 2026

test_free_threading.test_pickle takes more than 4 minutes and consumes up to 22 GiB of memory

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

topic-free-threading

Status: Open.

#150257 In python/cpython;

· vstinner opened on May 22, 2026

Two tests from test.test_asyncio.test_subprocess fail if path to cpython contains spaces

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.

#150244 In python/cpython;

· Jayman2000 opened on May 22, 2026

threading.Thread: documentation says group "should be None", but implementation enforces it with AssertionError

docsDocumentation in the Doc dirDocumentation in the Doc dir

topic-multiprocessing

Status: Open.

#150232 In python/cpython;

· My-ABC opened on May 22, 2026

PEP 829: resolve the design of the site dir batch processing API

3.15pre-release feature fixes, bugs and security fixespre-release feature fixes, bugs and security fixes

3.16new features, bugs and security fixesnew features, bugs and security fixes

docsDocumentation in the Doc dirDocumentation in the Doc dir

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

triagedThe issue has been accepted as valid by a triager.The issue has been accepted as valid by a triager.

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#150228 In python/cpython;

· ncoghlan opened on May 22, 2026

_interpchannels: missing PyErr_NoMemory() causes SystemErroron OOM in {create,close}()

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

topic-subinterpreters

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

Status: Open.

#150213 In python/cpython;

· lpyu001 opened on May 22, 2026

pyconfig.h string values are double-quoted in sysconfigdat

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

topic-sysconfig

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

Status: Open.

#150208 In python/cpython;

· stefanor opened on May 22, 2026

Allocation failures generated in _PyTokenizer_FromUTF8 lead to SystemError/abort()s

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

topic-parser

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

Status: Open.

#150207 In python/cpython;

· stestagg opened on May 21, 2026

Tail call interpreter makes test_gdb fail on -O0 optimization level

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.

#150206 In python/cpython;

· stratakis opened on May 21, 2026

Test failures on no-GIL interpreter macOS 26 ARM64 with UBSan

OS-mac

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.

#150195 In python/cpython;

· clin1234 opened on May 21, 2026

Data race in test_ssl.test_sni_callback_race

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

topic-free-threading

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

Status: Open.

#150191 In python/cpython;

· colesbury opened on May 21, 2026

abi3-abi3t documentation update

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#150187 In python/cpython;

· hydrogen-mvm opened on May 21, 2026