Issues

• _interpchannels: ChannelID.__eq__ reads module state from sys.modules without a check

  extension-modulestopic-subinterpreterstype-bug
  python/cpython#161841 · Filter by author grgalex opened on Nov 12, 2026
  3

• ctypes: array slice assignment replaces the value's __len__ exception with a ValueError

  extension-modulestopic-ctypestype-bug
  python/cpython#161840 · Filter by author grgalex opened on Nov 12, 2026

• sqlite3: exception from a collation callback is replaced by SystemError

  extension-modulestopic-sqlite3type-bug
  python/cpython#161837 · Filter by author grgalex opened on Nov 12, 2026

• _PyEval_EvalFrameDefault not in the call stack when interpreter is built with --with-tail-call-interp

  3.143.153.16build
  python/cpython#161827 · Filter by author ikrommyd opened on Nov 11, 2026
  2

  

• Building with LTO and Clang 20 on Debian fails to link

  buildtype-bug
  python/cpython#161821 · Filter by author nascheme opened on Nov 11, 2026

• Documented parameter names of some email.utils functions don't match the implementation

  python/cpython#161816 · Filter by author thejesh23 opened on Nov 11, 2026

• Improper handling of Unicode Properties in character set 3.16a2

  type-bug
  python/cpython#161814 · Filter by author facelessuser opened on Nov 11, 2026

• ElementTree: itertext() and tostring(method="text") lose the text of elements whose tag is a QName

  extension-modulesstdlibtopic-XMLtype-bug
  python/cpython#161809 · Filter by author ines-besrour opened on Nov 11, 2026
  1

• ElementTree: invalid paths raise KeyError instead of SyntaxError, and C and Python disagree on them

  extension-modulesstdlibtopic-XMLtype-bug
  python/cpython#161808 · Filter by author ines-besrour opened on Nov 11, 2026
  1

• ElementTree: empty path makes find()/findall()/findtext() raise TypeError

  extension-modulesstdlibtopic-XMLtype-bug
  python/cpython#161807 · Filter by author ines-besrour opened on Nov 11, 2026
  1

• ARCHFLAGS does not properly override ‑arch in sysconfig.get_config_vars() values since Python 3.13

  buildtopic-sysconfigtype-bug
  python/cpython#161805 · Filter by author jmarshall opened on Nov 11, 2026
  2

  

• pickle docs: Pickler's file.write() can receive bytes-like objects, not only bytes

  docs
  python/cpython#161803 · Filter by author eachimei opened on Nov 11, 2026
  3

• inspect.getframeinfo and traceback build every preceding co_positions() tuple

  pendingperformancestdlibtype-feature
  python/cpython#161799 · Filter by author xionghul opened on Nov 11, 2026
  3

• Crash when a callable iterator is shared between threads

  interpreter-coretopic-free-threadingtype-crash
  python/cpython#161792 · Filter by author nascheme opened on Nov 11, 2026
  1

  

• Support path-like objects in shutil.which()

  pendingstdlibtype-feature
  python/cpython#161788 · Filter by author Builder106 opened on Nov 10, 2026
  3

• Emscripten build fails when WebAssembly reference types are disabled

  OS-emscriptentype-bug
  python/cpython#161782 · Filter by author garbear opened on Nov 10, 2026

• Release free-threaded thread-state attachment can clobber errno and cause spurious directory I/O EAGAIN

  interpreter-coretopic-free-threadingtopic-subinterpreterstype-bug
  python/cpython#161769 · Filter by author Robolightning opened on Nov 10, 2026

• Crash in PyDict_AsFrozenDictAndClear() with obj.__dict__

  interpreter-coretopic-C-APItype-crash
  python/cpython#161767 · Filter by author iRELDevz opened on Nov 10, 2026

• asyncio.as_completed() leaves stale awaited_by edges when the loop exits early

  stdlibtopic-asynciotype-bug
  python/cpython#161766 · Filter by author iRELDevz opened on Nov 10, 2026
  1

• ssl docs: custom client socket example never connects

  docstopic-SSL
  python/cpython#161763 · Filter by author notatallshaw opened on Nov 10, 2026
  1

• Free-threaded GC can abort during concurrent subinterpreter teardown

  interpreter-coretopic-free-threadingtype-crash
  python/cpython#161751 · Filter by author XuehaiPan opened on Nov 10, 2026
  1

• Use the Neri–Schneider algorithm for ordinal-to-date conversion in datetime

  extension-modulesperformancestdlibtype-feature
  python/cpython#161746 · Filter by author mazalovmx opened on Nov 10, 2026
  3

• Avoid stop-the-world when __abstractmethods__ does not change the abstract flag

  interpreter-coreperformancetopic-free-threadingtype-feature
  python/cpython#161744 · Filter by author lpyu001 opened on Nov 10, 2026

• ValueError: [Provider routines] invalid salt length in test_hashlibtest_pbkdf2_hmac_c on FIPS w/ OpenSSL 4.0.3

  extension-modulesteststopic-SSLtype-bug
  python/cpython#161739 · Filter by author hroncok opened on Nov 10, 2026
  8

• Windows: update zlib-ng to 2.2.5 (PGO builds with Visual Studio 17.11 decompress wrongly on AVX-512 CPUs)

  buildOS-windowstype-bug
  python/cpython#161735 · Filter by author maikschulze opened on Nov 10, 2026
  1