Issues

importlib: later import hangs forever after a RecursionError in a small-stack thread leaves a module lock held

python/cpython#159652 · opened

on Oct 17, 2026

--async-aware profiles show event loop internals under tasks

python/cpython#159645 · opened

on Oct 17, 2026

tarfile stream mode raises EOFError reading past the end of bz2/xz/zstd data

python/cpython#159643 · opened

on Oct 17, 2026

http.cookiejar split_header_words is quadratic in the Set-Cookie2 length

python/cpython#159642 · opened

on Oct 17, 2026

Sampling profiler flamegraph HTML does not escape `</script>` in embedded profile data

python/cpython#159640 · opened

on Oct 17, 2026

Segfault freeing a deeply nested list after creating a JVM on the main thread (3.14 regression)

python/cpython#159639 · opened

on Oct 17, 2026

1

`minidom` `renameNode()` drops an attribute renamed to a prefixed name

python/cpython#159637 · opened

on Oct 17, 2026

csv.Sniffer ignores the dominant quotechar when candidates tie

python/cpython#159635 · opened

on Oct 17, 2026

`IMAP4.login_plain()` does not reject NUL in a `memoryview` credential

python/cpython#159631 · opened

on Oct 17, 2026

os.truncate() ignores _chsize_s() errors on Windows

python/cpython#159630 · opened

on Oct 17, 2026

Python 3.13.16 macOS framework seal verification after installation

python/cpython#159629 · opened

on Oct 17, 2026

1

email: IndexError when folding address headers containing empty comments

python/cpython#159621 · opened

on Oct 17, 2026

Remote asyncio stack traces stop at async generators

python/cpython#159620 · opened

on Oct 17, 2026

_pyrepl: IndexError in max_column when recalling a very long single-line history entry

python/cpython#159617 · opened

on Oct 17, 2026

GitHub Action: "Tail calling interpreter" times out after 60 minutes on macOS x86_64 on building LLVM from source

python/cpython#159612 · opened

on Oct 17, 2026

2

test_largefile hangs on x86-64 MacOS Intel ASAN NoGIL buildbot

python/cpython#159608 · opened

on Oct 17, 2026

2

test_faulthandler fails randomly on x86-64 MacOS Intel ASAN NoGIL 3.x

python/cpython#159606 · opened

on Oct 17, 2026

3

Implement stack size detection on FreeBSD

python/cpython#159603 · opened

on Oct 17, 2026

imaplib.Idler raises IndexError when another command's tagged response arrives during IDLE

python/cpython#159583 · opened

on Oct 16, 2026

2

Improve performance of isinstance() for misses and improve documentation

python/cpython#159580 · opened

on Oct 16, 2026

test_curses failures on Python 3.16.0a1 with ncurses 6.6 on openSUSE

python/cpython#159579 · opened

on Oct 16, 2026

1

Avoid the weakref list lock when dereferencing weakrefs

python/cpython#159564 · opened

on Oct 16, 2026

useless `AF_VSOCK` `setsockopt` validation code

python/cpython#159561 · opened

on Oct 16, 2026

Add a command-line interface to tracemalloc

python/cpython#159560 · opened

on Oct 16, 2026

Tracking un-needed nested locks

python/cpython#159558 · opened

on Oct 16, 2026

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Issues

importlib: later import hangs forever after a RecursionError in a small-stack thread leaves a module lock held

--async-aware profiles show event loop internals under tasks

tarfile stream mode raises EOFError reading past the end of bz2/xz/zstd data

http.cookiejar split_header_words is quadratic in the Set-Cookie2 length

Sampling profiler flamegraph HTML does not escape `</script>` in embedded profile data

Segfault freeing a deeply nested list after creating a JVM on the main thread (3.14 regression)

`minidom` `renameNode()` drops an attribute renamed to a prefixed name

csv.Sniffer ignores the dominant quotechar when candidates tie

`IMAP4.login_plain()` does not reject NUL in a `memoryview` credential

os.truncate() ignores _chsize_s() errors on Windows

Python 3.13.16 macOS framework seal verification after installation

email: IndexError when folding address headers containing empty comments

Remote asyncio stack traces stop at async generators

_pyrepl: IndexError in max_column when recalling a very long single-line history entry

GitHub Action: "Tail calling interpreter" times out after 60 minutes on macOS x86_64 on building LLVM from source

test_largefile hangs on x86-64 MacOS Intel ASAN NoGIL buildbot

test_faulthandler fails randomly on x86-64 MacOS Intel ASAN NoGIL 3.x

Implement stack size detection on FreeBSD

imaplib.Idler raises IndexError when another command's tagged response arrives during IDLE

Improve performance of isinstance() for misses and improve documentation

test_curses failures on Python 3.16.0a1 with ncurses 6.6 on openSUSE

Avoid the weakref list lock when dereferencing weakrefs

useless `AF_VSOCK` `setsockopt` validation code

Add a command-line interface to tracemalloc

Tracking un-needed nested locks