A number of Python builtins (range, tuple, set, frozenset, list, dict) are now sped up using PEP 590 vectorcall.

BPO 1635741, when Python is initialized multiple times in the same process, it does not leak memory anymore.

BPO 39926, Unicode support updated to version 13.0.0.

BPO 38692, os.pidfd_open added that allows process management without races and signals.BPO 38379, garbage collection does not block on resurrected objects.PEP 616, String methods to remove prefixes and suffixes.PEP 615, Support for the IANA Time Zone Database in the Standard Library.

PEP 614, Relaxing Grammar Restrictions On Decorators.PEP 602, Python adopts a stable annual release cadence.PEP 593, Flexible function and variable annotations.PEP 585, Type Hinting Generics In Standard Collections.PEP 573, Module State Access from C Extension Methods.Some of the new major new features and changes in Python 3.9 are: Major new features of the 3.9 series, compared to 3.8 Take a look at the change log for details. In any case, 166 commits is quite a few changes, some of which being pretty important fixes. For reference, version 3.7.8, the final regular bugfix release of Python 3.7, included 187 commits. However, it's likely that it was 3.8 that was special here with the governance changes occupying core developers' minds.

In comparison, version 3.8.10, the final regular bugfix release of Python 3.8, included only 92 commits. Starting now, the 3.9 branch will only accept security fixes and releases of those will be made in source-only form until October 2025.Ĭompared to the 3.8 series, this last regular bugfix release is still pretty active at 166 commits since 3.9.12.

Get the latest release of 3.11.x here.Īccording to the release calendar specified in PEP 596, Python 3.9.13 is the final regular maintenance release. Python 3.11 is now the latest feature release series of Python 3. Note: The release you're looking at is Python 3.9.13, a bugfix release for the legacy 3.9 series. Release Date: This is the thirteenth and final regular maintenance release of Python 3.9

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