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posix_spawn crashes when python is run with gprofng

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

Status: Open.

#149509 In python/cpython;

· scott-snyder opened on May 7, 2026

configure expects Python 3.15 on main after 3.16.0a0 cut

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

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

Status: Open.

#149507 In python/cpython;

· brettcannon opened on May 7, 2026

[3.15] Re-entrant calls to site.addsitedir() can fail (affecting uv run)

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

Status: Open.

#149504 In python/cpython;

· JelleZijlstra opened on May 7, 2026

Fix compilation warning for _YIELD_VALUE

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.

#149501 In python/cpython;

· sergey-miryanov opened on May 7, 2026

Remove expand_makefile_vars in 3.16

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.

#149499 In python/cpython;

· StanFromIreland opened on May 7, 2026

dis: FOR_ITER reports wrong exhausted-path jump target (END_FOR instead of POP_ITER)

Status: Open.

#149498 In python/cpython;

· P403n1x87 opened on May 7, 2026

test_webbrowser failing on MacOS

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

Status: Open.

#149496 In python/cpython;

· smontanaro opened on May 7, 2026

input assumes the last character is a '\n' and always strips it

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.

#149495 In python/cpython;

· Virv12 opened on May 7, 2026

Fix ElementTree serialization to HTML

3.13bugs and security fixesbugs and security fixes

3.14bugs and security fixesbugs and security fixes

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

topic-XML

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

Status: Open.

#149489 In python/cpython;

· serhiy-storchaka opened on May 7, 2026

Clarify what memoryview is generic in

docsDocumentation in the Doc dirDocumentation in the Doc dir

topic-typing

Status: Open.

#149488 In python/cpython;

· jonathandung opened on May 7, 2026

tarfile.data_filter doesn't handle symlinks with empty names

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

type-securityA security issueA security issue

Status: Open.

#149486 In python/cpython;

· encukou opened on May 7, 2026

JIT hang in xml.etree.iterparse

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)

topic-JIT

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

Status: Open.

#149481 In python/cpython;

· savannahostrowski opened on May 7, 2026