Cpython: v3.13.16 Release

255 Commits in this Release

Ordered by the degree to which they evolved the repo in this version.

[3.13] gh-157953: Update bundled Expat to 2.8.5 (GH-157957) (#157997)

Authored September 23, 2026

[3.13] gh-151464: exclude '<>' token from tokenize output (GH-154854) (#158191)

Authored September 25, 2026

[3.13] gh-156723: Update bundled libexpat to version 2.8.4 (GH-156724) (#156733)

Authored August 31, 2026

[3.13] gh-157847: Tidy up turtle motion docstrings and docs in `turtle` module (GH-158330) (#158367)

Authored September 28, 2026

[3.13] gh-155525: Fix quadratic f-string tokenization (GH-156756) (#157830)

Authored September 19, 2026

[3.13] gh-158322: Tidy up some docstrings in `turtle` module (GH-158281) (#158326)

Authored September 28, 2026

[3.13] gh-63882: Implement empty tests in test_minidom (GH-156677) (GH-157427)

Authored September 14, 2026

[3.13] gh-154511: Consolidate IDLE's mouse wheel handling in util (GH-156974) (GH-157023)

Authored September 6, 2026

[3.13] gh-69919: Catch all compile errors in the code module, pyrepl and IDLE (GH-157585) (#158030)

Authored September 24, 2026

[3.13] gh-132581: Report why the execution environment was altered (GH-155294) (GH-155988)

Authored August 18, 2026

[3.13] gh-123011: Fix warn_explicit() with the globals of the __main__ module (GH-155318) (GH-155991)

Authored August 18, 2026

[3.13] gh-156821: Fix inaccuracies in the xml.parsers.expat documentation (GH-156822) (GH-156854)

Authored September 2, 2026

[3.13] build(deps): bump the actions group with 13 updates (#158392)

Authored September 29, 2026

[3.13] gh-156106: Add tests for setting and deleting attributes defined in C (GH-156107) (GH-156191)

Authored August 21, 2026

[3.13] gh-156920, gh-156698: fix ProactorEventLoop datagram transport hangs on close() and after write errors (GH-156921) (#157609)

Authored September 29, 2026

[3.13] gh-105689: Parse only the current statement in the IDLE Shell (GH-157594) (#157652)

Authored September 17, 2026

[3.13] gh-158102: Add tests for the slice C API (GH-158120) (GH-158293)

Authored September 29, 2026

[3.13] gh-152204: Validate date and time fields in `_pydatetime.date{time}.fromisoformat` (GH-152205) (#156368)

Authored August 25, 2026

[3.13] gh-84419: Fix the execute permissions in os.stat() on Windows (GH-155392) (GH-156631)

Authored August 30, 2026

[3.13] gh-67765: Add tests for wsgiref.validate (GH-112398) (GH-155625)

Authored August 12, 2026

Python 3.13.16

Authored September 30, 2026

[3.13] gh-155648: In IDLE tests, call unittest.main without exit arg (GH-156249) (#156253)

Authored August 23, 2026

[3.13] gh-156196: Fix a failed assignment to a PyMemberDef attribute changing its value (GH-156197)

Authored August 21, 2026

[3.13] gh-155411: Fix test.support.subTests() for asynchronous tests (GH-155412) (GH-155546)

Authored August 12, 2026

[3.13] gh-102475: Fix os.path.realpath() for names which look like a drive (GH-155399) (GH-156595)

Authored August 29, 2026

[3.13] gh-152907: Restore cooked output flags around the input hook in the new REPL (GH-153389) (#158119)

Authored September 24, 2026

[3.13] gh-93016: Fix parsing of arguments in the IDLE "Run... 0

Authored September 24, 2026

[3.13] gh-69365: Show search pattern errors in the IDLE search dialogs (GH-157598) (#157669)

Authored September 18, 2026

[3.13] gh-156002: Bound zipfile decompression for bzip2/LZMA (GH-156003) (GH-156362) (#156738)

Authored September 29, 2026

[3.13] gh-153539: Fix use-after-free in TextIOWrapper.tell() with a reentrant decoder (GH-153540) (GH-156195)

Authored August 21, 2026

[3.13] gh-156765: Fix inaccuracies in the ElementTree documentation (GH-156766) (GH-156850)

Authored September 2, 2026

[3.13] gh-85260: Extend the AST Validator to validate all identifiers (GH-21069) (GH-155653)

Authored August 13, 2026

[3.13] gh-135511: Fixed truncated exception message for Name- and AttributeError (GH-135526) (#158276)

Authored September 27, 2026

[3.13] gh-156961: Fix tkinter.font.Font for a font name returned as a Tcl object (GH-157028) (GH-157405)

Authored September 13, 2026

[3.13] gh-157672: Keep Python's signal handlers when Tk is initialized on macOS (GH-157673) (GH-157989)

Authored September 23, 2026

[3.13] gh-154357: Fix tkinter, ttk and IDLE tests depending on the window manager (GH-154370) (GH-157065)

Authored September 7, 2026

[3.13] Doc: Clarify UUID bytes attributes (GH-149972) (#157820)

Authored September 26, 2026

[3.13] gh-103089: Colorize only the beginning of very long lines in IDLE (GH-157647) (#158023)

Authored September 23, 2026

[3.13] gh-110793: Add CI job that runs tests with an installed build (GH-152664) (#155482)

Authored August 10, 2026

[3.13] gh-157639: Fix use-after-free when an external timer re-enters the profiler (GH-157648) (#158118)

Authored September 24, 2026