Issues

`tarfile.tar_filter` doesn't handle symlinks with empty names

python/cpython#160097 · opened

on Oct 21, 2026

GzipFile.seek() returns a stale position when writing buffered padding

python/cpython#160071 · opened

on Oct 21, 2026

test_bz2 failed on RISC-V 64-bit Ubuntu Clang 3.15

python/cpython#160058 · opened

on Oct 21, 2026

1

modulo for huge integers has the wrong complexity

python/cpython#160050 · opened

on Oct 21, 2026

1

Tachyon compatibility with custom frame evaluation functions

python/cpython#160046 · opened

on Oct 21, 2026

Concurrent imports of a package and its submodule raise _DeadlockError since 3.13.16 (gh-130094 backport)

python/cpython#160045 · opened

on Oct 21, 2026

1

textwrap.shorten() raises "placeholder too large" for text that already fits

python/cpython#160043 · opened

on Oct 21, 2026

ssl: distrust compromised eMudhra intermediate CA keys

python/cpython#160040 · opened

on Oct 21, 2026

8

Add a dedicated documentation entry for `tokenize.TokenInfo`

python/cpython#160036 · opened

on Oct 21, 2026

Datetime docs on determining tz-awareness can be simplified with utcoffset method

python/cpython#160035 · opened

on Oct 21, 2026

1

statistics.variance() can return a negative result for data containing infinity

python/cpython#160034 · opened

on Oct 21, 2026

4

wave.Wave_write.setparams() rejects valid PCM-to-IEEE-float parameter changes

python/cpython#160030 · opened

on Oct 21, 2026

CookieJar.add_cookie_header() is linear in the number of stored domains

python/cpython#160027 · opened

on Oct 21, 2026

`generate-build-details.py --relative-paths --config-file-path` writes wrong paths

python/cpython#160004 · opened

on Oct 21, 2026

`zlib._ZlibDecompressor(zdict=...)` raises `SystemError` on a zlib-wrapped stream

python/cpython#160001 · opened

on Oct 21, 2026

`LZMADecompressor.decompress(b'', max_length=0)` raises `LZMAError` on the second consecutive call

python/cpython#160000 · opened

on Oct 21, 2026

`BZ2Decompressor` and `zlib._ZlibDecompressor` set `needs_input=True` while output is still buffered

python/cpython#159999 · opened

on Oct 21, 2026

PEP 739 `build-details.json` points `libpython.dynamic` at a nonexistent path in framework builds

python/cpython#159998 · opened

on Oct 21, 2026

multiprocessing.managers proxy finalizer can deadlock a manager server running in the same process

python/cpython#159986 · opened

on Oct 20, 2026

Soft keyword highlighting issues on continuation lines

python/cpython#159973 · opened

on Oct 20, 2026

`ThreadPoolExecutor` tasks see the context of whichever `submit()` call started their worker thread

python/cpython#159964 · opened

on Oct 20, 2026

4

3.15 regression: concurrent first imports can fail or hang without any import cycle

python/cpython#159963 · opened

on Oct 20, 2026

JIT frames for PEP-523 consumers can't report deferred references

python/cpython#159961 · opened

on Oct 20, 2026

Support multi-statement prompts in PDB REPL

python/cpython#159887 · opened

on Oct 20, 2026

2

run_with_limited_c_stack(size=...) is unsafe below Py_C_STACK_SIZE on platforms without stack-size detection

python/cpython#159879 · opened

on Oct 20, 2026

1

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Issues

`tarfile.tar_filter` doesn't handle symlinks with empty names

GzipFile.seek() returns a stale position when writing buffered padding

test_bz2 failed on RISC-V 64-bit Ubuntu Clang 3.15

modulo for huge integers has the wrong complexity

Tachyon compatibility with custom frame evaluation functions

Concurrent imports of a package and its submodule raise _DeadlockError since 3.13.16 (gh-130094 backport)

textwrap.shorten() raises "placeholder too large" for text that already fits

ssl: distrust compromised eMudhra intermediate CA keys

Add a dedicated documentation entry for `tokenize.TokenInfo`

Datetime docs on determining tz-awareness can be simplified with utcoffset method

statistics.variance() can return a negative result for data containing infinity

wave.Wave_write.setparams() rejects valid PCM-to-IEEE-float parameter changes

CookieJar.add_cookie_header() is linear in the number of stored domains

`generate-build-details.py --relative-paths --config-file-path` writes wrong paths

`zlib._ZlibDecompressor(zdict=...)` raises `SystemError` on a zlib-wrapped stream

`LZMADecompressor.decompress(b'', max_length=0)` raises `LZMAError` on the second consecutive call

`BZ2Decompressor` and `zlib._ZlibDecompressor` set `needs_input=True` while output is still buffered

PEP 739 `build-details.json` points `libpython.dynamic` at a nonexistent path in framework builds

multiprocessing.managers proxy finalizer can deadlock a manager server running in the same process

Soft keyword highlighting issues on continuation lines

`ThreadPoolExecutor` tasks see the context of whichever `submit()` call started their worker thread

3.15 regression: concurrent first imports can fail or hang without any import cycle

JIT frames for PEP-523 consumers can't report deferred references

Support multi-statement prompts in PDB REPL

run_with_limited_c_stack(size=...) is unsafe below Py_C_STACK_SIZE on platforms without stack-size detection