python3-3.13.5 (Wait for LFS)

[Bruce Dubbs]

New point version.

Seems a bit quick for another version.

Today is June 11th, previous was June 3rd.

[Bruce Dubbs]

Python 3.13.5 final

Release date: 2025-06-11

Windows

• gh-135151: Avoid distributing modified pyconfig.h in the traditional installer. Extension module builds must always specify Py_GIL_DISABLED when targeting the free-threaded runtime.

Tests

• gh-135120: Add test.support.subTests().

Library

• gh-133967: Do not normalize locale name ‘C.UTF-8’ to ‘en_US.UTF-8’.
• gh-135326: Restore support of integer-like objects with index() in random.getrandbits().
• gh-135321: Raise a correct exception for values greater than 0x7fffffff for the BINSTRING opcode in the C implementation of pickle.
• gh-135276: Backported bugfixes in zipfile.Path from zipp 3.23. Fixed .name, .stem and other basename-based properties on Windows when working with a zipfile on disk.
• gh-134151: email: Fix TypeError in email.utils.decode_params() when sorting RFC 2231 continuations that contain an unnumbered section.
• gh-134152: email: Fix parsing of email message ID with invalid domain.
• gh-127081: Fix libc thread safety issues with os by replacing getlogin with getlogin_r re-entrant version.
• gh-131884: Fix formatting issues in json.dump() when both indent and skipkeys are used.

Core and Builtins

• gh-135171: Roll back changes to generator and list comprehensions that went into 3.13.4 to fix gh-127682, but which involved semantic and bytecode changes not appropriate for a bugfix release.

C API

• gh-134989: Fix Py_RETURN_NONE, Py_RETURN_TRUE and Py_RETURN_FALSE macros in the limited C API 3.11 and older: don’t treat Py_None, Py_True and Py_False as immortal.
• gh-134989: Implement PyObject_DelAttr() and PyObject_DelAttrString() as macros in the limited C API 3.12 and older.

[Douglas R. Reno]

This is the fifth maintenance release of Python 3.13

Python 3.13 is the newest major release of the Python programming language, and it contains many new features and optimizations compared to Python 3.12. 3.13.5 is the fifth maintenance release of 3.13.

3.13.5 is an expedited release to fix a couple of significant issues with the 3.13.4 release:

• gh-135151: Building extension modules on Windows for the regular (non-free-threaded) build failed.
• gh-135171: Generator expressions stopped raising TypeError (when iterating over non-iterable objects) at creation time, delaying it to first use.
• gh-135326: Passing int-like objects (like numpy.int64) to random.getrandbits() failed, when it worked before.

---

The last two bug fixes seem quite significant.

[Bruce Dubbs]

Fixed at commits

02f47711c5 Update to Python-3.13.5.
936166f7b0 Update to inih-r60.
eb9a60f18f Update to jansson-2.14.1.