Issues

documentation of `tp_alloc` and `tp_free` inheritance for heap types is incorrect

python/cpython#160749 · opened

on Oct 27, 2026

ssl: test_distrusted_spki fails on AWS-LC builds

python/cpython#160736 · opened

on Oct 26, 2026

1

Tachyon: GeckoCollector closes open markers too early when replay batches arrive out of order

python/cpython#160735 · opened

on Oct 26, 2026

venv: --prompt / env-dir value is not escaped for the shell's prompt-display pass in generated activate (bash/zsh)

python/cpython#160732 · opened

on Oct 26, 2026

5

Speed up `print()` by looking up `file.write` once per call

python/cpython#160725 · opened

on Oct 26, 2026

Add `list.discard()` and `deque.discard()`

python/cpython#160724 · opened

on Oct 26, 2026

14

New `_Py_STDC_VERSION` macro not available in pyport.h

python/cpython#160719 · opened

on Oct 26, 2026

tarfile filter bypass: euc_kr make-up sequences let `realpath()` and the kernel disagree, writing files outside the destination

python/cpython#160717 · opened

on Oct 26, 2026

ctypes: out-of-bounds read/write in bool() and argument passing after resize()

python/cpython#160708 · opened

on Oct 26, 2026

Build fails with glibc 2.13 after `static_assert` fallback regression

python/cpython#160704 · opened

on Oct 26, 2026

`subprocess.run(timeout=...)` swallows a signal handler's `InterruptedError` on macOS in Python 3.15

python/cpython#160700 · opened

on Oct 26, 2026

sqlite3: concurrent execute() on a shared Connection crashes the process with a native access violation (threadsafety == 3)

python/cpython#160699 · opened

on Oct 26, 2026

1

Free-threaded build crashes when destructor ran in the middle of dict/list resize

python/cpython#160697 · opened

on Oct 26, 2026

Speed up urllib.parse.unquote() for ASCII input

python/cpython#160690 · opened

on Oct 26, 2026

Add C API tests for PyObject_CopyData and PyBuffer_FillContiguousStrides

python/cpython#160688 · opened

on Oct 26, 2026

ConfigParser.items() does not normalize non-string vars like get()

python/cpython#160684 · opened

on Oct 25, 2026

Windows: remote pdb loses its interrupt connection after about 120 seconds

python/cpython#160683 · opened

on Oct 25, 2026

4

Combining the argument-conversion loops in _PyEval_Vector

python/cpython#160679 · opened

on Oct 25, 2026

4

`for` loop swallows exceptions raised by a `sys.monitoring` callback for `StopIteration`

python/cpython#160676 · opened

on Oct 25, 2026

email: generating messages got slower after gh-87720, since folding walks the parse tree repeatedly

python/cpython#160675 · opened

on Oct 25, 2026

`PyDict_Merge` and `PyDict_Update` have conflicting docs: both require `.keys` to exist

python/cpython#160669 · opened

on Oct 25, 2026

2

Lazy imports break dataclass InitVars in extremely rare scenarios

python/cpython#160665 · opened

on Oct 25, 2026

2

UAF in GC `visit_generation()`

python/cpython#160663 · opened

on Oct 25, 2026

1

test_subprocess: test_getoutput fails on non-English Windows, as text mode decodes cmd.exe's OEM output as UTF-8

python/cpython#160652 · opened

on Oct 25, 2026

3

pdb: breakpoint() is ignored after quitting a previous session with q

python/cpython#160643 · opened

on Oct 25, 2026

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Issues

documentation of `tp_alloc` and `tp_free` inheritance for heap types is incorrect

ssl: test_distrusted_spki fails on AWS-LC builds

Tachyon: GeckoCollector closes open markers too early when replay batches arrive out of order

venv: --prompt / env-dir value is not escaped for the shell's prompt-display pass in generated activate (bash/zsh)

Speed up `print()` by looking up `file.write` once per call

Add `list.discard()` and `deque.discard()`

New `_Py_STDC_VERSION` macro not available in pyport.h

tarfile filter bypass: euc_kr make-up sequences let `realpath()` and the kernel disagree, writing files outside the destination

ctypes: out-of-bounds read/write in bool() and argument passing after resize()

Build fails with glibc 2.13 after `static_assert` fallback regression

`subprocess.run(timeout=...)` swallows a signal handler's `InterruptedError` on macOS in Python 3.15

sqlite3: concurrent execute() on a shared Connection crashes the process with a native access violation (threadsafety == 3)

Free-threaded build crashes when destructor ran in the middle of dict/list resize

Speed up urllib.parse.unquote() for ASCII input

Add C API tests for PyObject_CopyData and PyBuffer_FillContiguousStrides

ConfigParser.items() does not normalize non-string vars like get()

Windows: remote pdb loses its interrupt connection after about 120 seconds

Combining the argument-conversion loops in _PyEval_Vector

`for` loop swallows exceptions raised by a `sys.monitoring` callback for `StopIteration`

email: generating messages got slower after gh-87720, since folding walks the parse tree repeatedly

`PyDict_Merge` and `PyDict_Update` have conflicting docs: both require `.keys` to exist

Lazy imports break dataclass InitVars in extremely rare scenarios

UAF in GC `visit_generation()`

test_subprocess: test_getoutput fails on non-English Windows, as text mode decodes cmd.exe's OEM output as UTF-8

pdb: breakpoint() is ignored after quitting a previous session with q