Issues

• asyncio: an SSL connection whose peer closes while reading is paused cannot be closed, and its writes are dropped

  stdlibtopic-asynciotype-bug
  python/cpython#161560 · Filter by author cornopaez opened on Nov 7, 2026

• heapq doctests fail with global lazy imports

  teststopic-lazy-imports
  python/cpython#161555 · Filter by author tonghuaroot opened on Nov 7, 2026

• JIT: recording a JUMP_BACKWARD while tracing resets its warmup counter

  topic-JITtype-bug
  python/cpython#161553 · Filter by author KRRT7 opened on Nov 7, 2026
  1

• Re-importing _pyrepl.readline leaks file descriptors

  3.143.153.16topic-repltype-bug
  python/cpython#161549 · Filter by author Eclips4 opened on Nov 7, 2026
  4

  

• AMD64 Android 3.x failed: Failed to install split APK

  OS-androidteststype-bug
  python/cpython#161528 · Filter by author vstinner opened on Nov 7, 2026
  3

• Optimising sparse dict copy

  interpreter-coreperformancetype-feature
  python/cpython#161524 · Filter by author johng opened on Nov 7, 2026

• io: TextIOWrapper silently corrupts output when encoder is a no-op

  extension-modulestopic-IOtype-bug
  python/cpython#161518 · Filter by author grgalex opened on Nov 6, 2026

• platform: import _wmi on first use

  OS-windowsperformancestdlibtype-feature
  python/cpython#161513 · Filter by author azchohfi opened on Nov 6, 2026
  1

• mimetypes: reading the Windows registry through HKEY_CLASSES_ROOT is slow

  extension-modulesOS-windowsperformancetype-feature
  python/cpython#161512 · Filter by author azchohfi opened on Nov 6, 2026

• Windows venv python.exe starts a second process; could the launcher run the interpreter in-process?

  OS-windowsperformancetype-feature
  python/cpython#161511 · Filter by author azchohfi opened on Nov 6, 2026

• Windows: avoid importing encodings._win_cp_codecs and time at startup

  OS-windowsperformancestdlibtype-feature
  python/cpython#161510 · Filter by author azchohfi opened on Nov 6, 2026
  1

• ssl.get_server_certificate(addr, ca_certs=...) verifies the chain but never the identity

  3.113.123.133.143.153.16stdlibtopic-SSLtype-security
  python/cpython#161503 · Filter by author brettcs opened on Nov 6, 2026

• python -m asyncio pstree loses nodes on Task → Future → Task chains

  stdlibtopic-asynciotype-bug
  python/cpython#161502 · Filter by author deadlovelll opened on Nov 6, 2026

• Treat swapped adjacent letters as a single edit in "Did you mean" suggestions

  interpreter-coretype-feature
  python/cpython#161498 · Filter by author moontc opened on Nov 6, 2026
  5

• pure-Python suggestion fallback differs from the C implementation

  stdlibtype-bug
  python/cpython#161495 · Filter by author moontc opened on Nov 6, 2026

• Fix a typo in test test_str.py

  teststype-bug
  python/cpython#161492 · Filter by author samitistfobos-dev opened on Nov 6, 2026

• test_concurrent_gi_frame is flaky under --parallel-threads: the reader thread may never run its loop body

  teststopic-free-threadingtype-bug
  python/cpython#161489 · Filter by author thalesmourabh opened on Nov 6, 2026

• test_email: content-shadow header tuple is discarded in test_message.py

  teststopic-emailtype-bug
  python/cpython#161479 · Filter by author PavlNekrasov opened on Nov 6, 2026

• zlib, gzip, lzma and zstd decompression in 3.15: slower on macOS and Windows, and the process footprint grows on macOS (bisected to f262297)

  extension-modulesperformancetype-bug
  python/cpython#161478 · Filter by author maikschulze opened on Nov 6, 2026

• Fix signed char handling in SSL record header version

  extension-modulestopic-SSLtype-bug
  python/cpython#161472 · Filter by author samitistfobos-dev opened on Nov 6, 2026

• ctypes: SIGSEGV when subscripting a pointer type without _type_

  extension-modulestopic-ctypestype-crash
  python/cpython#161471 · Filter by author PavlNekrasov opened on Nov 6, 2026

• Consider enabling tail call interpreter for sre_lib.h

  extension-modulesperformancetopic-regextype-feature
  python/cpython#161469 · Filter by author sobolevn opened on Nov 6, 2026
  2

• The hot attribute is not enabled when building CPython with Clang's default configuration

  buildperformancetype-feature
  python/cpython#161467 · Filter by author chenshanzhi opened on Nov 6, 2026

• Freeing a deeply nested list segfaults after resource.setrlimit(RLIMIT_STACK)

  extension-modulesinterpreter-coretype-crash
  python/cpython#161456 · Filter by author NekoAsakura opened on Nov 6, 2026
  

• python -m random N prints a float for an integer N <= 0

  stdlibtype-bug
  python/cpython#161452 · Filter by author andresdelfino opened on Nov 5, 2026