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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 Python 3.9 is incompatible with this unsupported version of Windows. The installer now also actively disallows installation on Windows 7. This is the first version of Python to default to the 64-bit installer on Windows. This work would not have been possible without the effort of Ronald Oussoren, Ned Deily, and Lawrence D’Anna from Apple. As we are waiting for an updated version of pip, please consider the macos11.0 installer experimental. This installer can be deployed back to older versions, tested down to OS X 10.9.

We are providing such an installer as the macos11.0 variant. With Xcode 11 and later it is now possible to build “Universal 2” binaries which work on Apple Silicon. Installer newsģ.9.1 is the first version of Python to support macOS 11 Big Sur. To compare, 3.8.1 only saw 192 commits since 3.8.0.

We've made 282 changes since 3.9.0 which is a significant amount. Python 3.11 is now the latest feature release series of Python 3. Note: The release you're looking at is Python 3.9.1, a bugfix release for the legacy 3.9 series. 7, 2020 This is the first maintenance release of Python 3.9