Search

Issues

• tarfile: extractfile(member).read() of a sparse member is slow due to repeated bytes concatenation

  python/cpython#160774 · opened on Oct 27, 2026
  2

• pathlib match, full_match and glob take exponential time on short patterns because glob.translate skips fnmatch's atomic-group rewrite

  python/cpython#159717 · opened on Oct 19, 2026
  2

• use skip_pyc_compilation in pixi-packages

  python/cpython#152317 · opened on Jun 26, 2026

• Speed up SimpleHTTPRequestHandler.list_directory() by using os.scandir()

  python/cpython#151788 · opened on Jun 20, 2026
  12

• email.message.Message.add_header behavior differs from Message[header]=v

  python/cpython#151454 · opened on Jun 13, 2026
  15

• CIDR support for proxy bypass list

  python/cpython#149746 · opened on May 12, 2026
  2

• Handle unicode characters in bytecodes.c

  python/cpython#148697 · opened on Apr 17, 2026

• ThreadPoolExecutor marks interpreter as shutdown before non daemon threads exit

  python/cpython#148280 · opened on Apr 9, 2026
  1

• list.remove is not atomic for non trivial __eq__ comparisons

  python/cpython#148259 · opened on Apr 8, 2026
  11

• CYGWIN: GCC prints "defined but not used" warnings on mimalloc

  python/cpython#146594 · opened on Mar 29, 2026

• ctrl-w deletes words with punctuation instead of whitespace boundary

  python/cpython#146044 · opened on Mar 17, 2026
  1

• What type bound parameter of typing.TypeVar accepts should be explained more clearly

  python/cpython#145524 · opened on Mar 5, 2026
  2

• Add a tutorial for cmd.Cmd for emptyline() and do_EOF

  python/cpython#144338 · opened on Jan 30, 2026
  9

• Make "perhaps you missed a comma?" hint in syntax warnings less cryptic

  python/cpython#140764 · opened on Oct 29, 2025
  11

• pygettext.py crashes with UnicodeEncodeError when writing .pot files containing emoji

  python/cpython#139873 · opened on Oct 9, 2025
  2

• argparse: long options with mixed prefix characters

  python/cpython#138701 · opened on Sep 9, 2025
  1

• Make asyncio.Lock.locked() return True when there are waiters

  python/cpython#138121 · opened on Aug 24, 2025
  9

• The docstring of str() should show the default values for object, encoding and errors and should say bytes-like object

  python/cpython#137112 · opened on Jul 25, 2025
  6

• The C analyzer seems to fail when --disable-gil is set

  python/cpython#136952 · opened on Jul 21, 2025
  2

• Improving ./configure --help output

  python/cpython#136700 · opened on Jul 16, 2025
  1

• Possible resource exhaustation of expandvars in Tools/freeze/checkextensions.py

  python/cpython#136073 · opened on Jun 28, 2025
  7

• ast.class._field_types causes Exception when ast.class._fields does not cause Exception

  python/cpython#135797 · opened on Jun 21, 2025
  7

• Performance issue with ARM64 windows Python release binaries

  python/cpython#134524 · opened on May 22, 2025
  11

• Consider making Template and Interpolation generic at runtime

  python/cpython#133970 · opened on May 13, 2025
  22

• Support gdbjit for CPython

  python/cpython#133377 · opened on May 4, 2025
  4