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Issues

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

  python/cpython#161841 · opened on Nov 12, 2026
  3

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

  python/cpython#161840 · opened on Nov 12, 2026

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

  python/cpython#161837 · opened on Nov 12, 2026

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

  python/cpython#161809 · opened on Nov 11, 2026
  1

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

  python/cpython#161808 · opened on Nov 11, 2026
  1

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

  python/cpython#161807 · opened on Nov 11, 2026
  1

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

  python/cpython#161746 · opened on Nov 10, 2026
  3

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

  python/cpython#161739 · opened on Nov 10, 2026
  8

• Thread.join(timeout) can block forever: ThreadHandle_join reads the clock twice through Py_MAX (3.13, 3.14)

  python/cpython#161712 · opened on Nov 9, 2026
  1

• functools.partial: changing p.keywords during the call's keyword merge overflows a stack buffer

  python/cpython#161692 · opened on Nov 9, 2026

• _socket: socket.sethostname() reports a failed buffer export as an OS error, raising SystemError

  python/cpython#161665 · opened on Nov 9, 2026

• json.dumps: single circle markers hash lookup

  python/cpython#161661 · opened on Nov 9, 2026
  2

• AF_VSOCK sockets reject buffered SOL_SOCKET options

  python/cpython#161657 · opened on Nov 9, 2026

• tkinter: os.dup2() on fds 1/2 breaks every subsequent Tcl interpreter on Windows

  python/cpython#161620 · opened on Nov 8, 2026
  3

• curses.tparm() crashes for capabilities that take string parameters

  python/cpython#161571 · opened on Nov 7, 2026

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

  python/cpython#161518 · opened on Nov 6, 2026

• mimetypes: reading the Windows registry through HKEY_CLASSES_ROOT is slow

  python/cpython#161512 · opened on Nov 6, 2026
  4

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

  python/cpython#161478 · opened on Nov 6, 2026
  4

• Fix signed char handling in SSL record header version

  python/cpython#161472 · opened on Nov 6, 2026

• ctypes: SIGSEGV when subscripting a pointer type without _type_

  python/cpython#161471 · opened on Nov 6, 2026

• Consider enabling tail call interpreter for sre_lib.h

  python/cpython#161469 · opened on Nov 6, 2026
  2

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

  python/cpython#161456 · opened on Nov 6, 2026

• ctypes: _Pointer.contents setter casts a __class__-spoofed value to CDataObject *

  python/cpython#161390 · opened on Nov 5, 2026
  1

• Speed up _sre matching of runs of literal characters

  python/cpython#161335 · opened on Nov 4, 2026
  5

• signalmodule.c in free-threaded Python

  python/cpython#161235 · opened on Nov 3, 2026
  4