Issues

3.13.16: test_math fails to import on musl (linked_to_musl() returns bool, compared to tuple)

python/cpython#159015 · opened

on Oct 8, 2026

2

Docs: tarfile.LinkFallbackError versionadded says 3.15, but it ships in 3.14.0 and 3.9.23+

python/cpython#159013 · opened

on Oct 8, 2026

2

Docs: socket.htons() and friends raise ValueError for negative input since 3.14

python/cpython#159012 · opened

on Oct 8, 2026

1

Docs: threading says dummy thread objects are never deleted, outdated since 3.13

python/cpython#159011 · opened

on Oct 8, 2026

Docs: -X disable_remote_debug is spelled with an underscore, but the interpreter only accepts disable-remote-debug

python/cpython#159010 · opened

on Oct 8, 2026

Windows: `import hashlib` loads user32.dll and the GDI DLLs through libcrypto; delay-load user32

python/cpython#159008 · opened

on Oct 8, 2026

2

Document Flet in macOS, iOS, and Android guides

python/cpython#159003 · opened

on Oct 8, 2026

1

os.statx() ignores follow_symlinks=False

python/cpython#158998 · opened

on Oct 7, 2026

1

Check that Emscripten free-threaded build works

python/cpython#158996 · opened

on Oct 7, 2026

profiling.sampling reports third-party modules as stdlib when site-packages is inside the stdlib directory

python/cpython#158986 · opened

on Oct 7, 2026

cProfile and profile: -m MODULE does not run MODULE as `main`

python/cpython#158985 · opened

on Oct 7, 2026

1

xml.dom.minidom: writexml() treats a setAttribute("xmlns:p", ...) attribute as a declaration of the default namespace

python/cpython#158984 · opened

on Oct 7, 2026

Subscripting a generic alias without an argument for a parameter with a default fails

python/cpython#158981 · opened

on Oct 7, 2026

Windows cpXXX codecs: StreamReader raises TypeError (decode() missing 'final')

python/cpython#158980 · opened

on Oct 7, 2026

textwrap.wrap() and fill() loop forever when the indent is wider than width

python/cpython#158979 · opened

on Oct 7, 2026

`xml.dom.minidom`: cloneNode() and importNode() raise NamespaceErr for DOM Level 1 nodes

python/cpython#158978 · opened

on Oct 7, 2026

Unreliable imap test in test_multiprocessing with fixed sleep duration

python/cpython#158975 · opened

on Oct 7, 2026

`os.fork()` child can hang inside `PyOS_AfterFork_Child()` on the warnings lock (3.14 regression)

python/cpython#158973 · opened

on Oct 7, 2026

Free-threaded build never returns freed memory to the OS on macOS, even with gc.collect() and MIMALLOC_PURGE_DELAY=0

python/cpython#158972 · opened

on Oct 7, 2026

2

`profiling.sampling --async-aware` misses main interpreter tasks when subinterpreters exist

python/cpython#158968 · opened

on Oct 7, 2026

LeakSanitizer reports leaked code object during SQLAlchemy editable build on 3.15 and main

python/cpython#158963 · opened

on Oct 7, 2026

4

PyREPL corrupts attribute completion input on WSL/Windows Terminal

python/cpython#158955 · opened

on Oct 7, 2026

4

_pyio.BytesIO.readinto() advances the stream when passed a read-only buffer

python/cpython#158952 · opened

on Oct 7, 2026

Rework `Modules/getbuildinfo.c` to build strings at build time, instead of runtime

python/cpython#158948 · opened

on Oct 7, 2026

`Py_MIN()`, `Py_MAX()` and `Py_ABS()` cause C compatibility regressions

python/cpython#158942 · opened

on Oct 6, 2026

5

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Issues

3.13.16: test_math fails to import on musl (linked_to_musl() returns bool, compared to tuple)

Docs: tarfile.LinkFallbackError versionadded says 3.15, but it ships in 3.14.0 and 3.9.23+

Docs: socket.htons() and friends raise ValueError for negative input since 3.14

Docs: threading says dummy thread objects are never deleted, outdated since 3.13

Docs: -X disable_remote_debug is spelled with an underscore, but the interpreter only accepts disable-remote-debug

Windows: `import hashlib` loads user32.dll and the GDI DLLs through libcrypto; delay-load user32

Document Flet in macOS, iOS, and Android guides

os.statx() ignores follow_symlinks=False

Check that Emscripten free-threaded build works

profiling.sampling reports third-party modules as stdlib when site-packages is inside the stdlib directory

cProfile and profile: -m MODULE does not run MODULE as `main`

xml.dom.minidom: writexml() treats a setAttribute("xmlns:p", ...) attribute as a declaration of the default namespace

Subscripting a generic alias without an argument for a parameter with a default fails

Windows cpXXX codecs: StreamReader raises TypeError (decode() missing 'final')

textwrap.wrap() and fill() loop forever when the indent is wider than width

`xml.dom.minidom`: cloneNode() and importNode() raise NamespaceErr for DOM Level 1 nodes

Unreliable imap test in test_multiprocessing with fixed sleep duration

`os.fork()` child can hang inside `PyOS_AfterFork_Child()` on the warnings lock (3.14 regression)

Free-threaded build never returns freed memory to the OS on macOS, even with gc.collect() and MIMALLOC_PURGE_DELAY=0

`profiling.sampling --async-aware` misses main interpreter tasks when subinterpreters exist

LeakSanitizer reports leaked code object during SQLAlchemy editable build on 3.15 and main

PyREPL corrupts attribute completion input on WSL/Windows Terminal

_pyio.BytesIO.readinto() advances the stream when passed a read-only buffer

Rework `Modules/getbuildinfo.c` to build strings at build time, instead of runtime

`Py_MIN()`, `Py_MAX()` and `Py_ABS()` cause C compatibility regressions