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Python 3.11.0rc2

Release Date: Sept. 12, 2022

This is the second release candidate of Python 3.11

This release, 3.11.0rc2, is the last preview before the final release of Python 3.11.0 on 2022-10-24.

Entering the release candidate phase, only reviewed code changes which are clear bug fixes are allowed between this release candidate and the final release. The second candidate and the last planned release preview is currently planned for Monday, 2022-09-05 while the official release is planned for Monday, 2022-10-24.

There will be no ABI changes from this point forward in the 3.11 series and the goal is that there will be as few code changes as possible.

Call to action

Core developers: all eyes on the docs now

  • Are all your changes properly documented?
  • Did you notice other changes you know of to have insufficient documentation?

Community members

We strongly encourage maintainers of third-party Python projects to prepare their projects for 3.11 compatibilities during this phase. As always, report any issues to the Python bug tracker.

Please keep in mind that this is a preview release and its use is not recommended for production environments.

Major new features of the 3.11 series, compared to 3.10

Some of the new major new features and changes in Python 3.11 are:

General changes

  • PEP 657 -- Include Fine-Grained Error Locations in Tracebacks
  • PEP 654 -- Exception Groups and except*
  • PEP 680 -- tomllib: Support for Parsing TOML in the Standard Library
  • gh-90908 -- Introduce task groups to asyncio
  • gh-34627 -- Atomic grouping ((?>...)) and possessive quantifiers (*+, ++, ?+, {m,n}+) are now supported in regular expressions.
  • The Faster CPython Project is already yielding some exciting results. Python 3.11 is up to 10-60% faster than Python 3.10. On average, we measured a 1.22x speedup on the standard benchmark suite. See Faster CPython for details.

Typing and typing language changes

  • PEP 673 -- Self Type
  • PEP 646 -- Variadic Generics
  • PEP 675 -- Arbitrary Literal String Type
  • PEP 655 -- Marking individual TypedDict items as required or potentially-missing
  • PEP 681 -- Data Class Transforms

(Hey, fellow core developer, if a feature you find important is missing from this list, let Pablo know.)

The next release will be the final release of Python 3.11.0, which is currently scheduled for Monday, 2022-10-24.

More resources

And now for something completely different

In general relativity, a white hole is a theoretical region of spacetime and singularity that cannot be entered from the outside, although energy-matter, light and information can escape from it. In this sense, it is the reverse of a black hole, which can be entered only from the outside and from which energy-matter, light and information cannot escape. White holes appear in the theory of eternal black holes. In addition to a black hole region in the future, such a solution of the Einstein field equations has a white hole region in its past. This region does not exist for black holes that have formed through gravitational collapse, however, nor are there any observed physical processes through which a white hole could be formed. Supermassive black holes are theoretically predicted to be at the centre of every galaxy and that possibly, a galaxy cannot form without one. Stephen Hawking and others have proposed that these supermassive black holes spawn a supermassive white hole.


Version Operating System Description MD5 Sum File Size GPG Sigstore
Gzipped source tarball Source release ca87be65d7cb91d1048ebfd29493dd07 25.1 MB SIG CRT SIG
XZ compressed source tarball Source release 27ccc3ff3fdcf7f1ab178066e41e9dd5 18.9 MB SIG CRT SIG
macOS 64-bit universal2 installer macOS for macOS 10.9 and later c2f17a1541eb0ade9feeb87bb98cd12e 40.6 MB SIG CRT SIG
Windows installer (64-bit) Windows Recommended d42b794ca98538ae91aa6753e3a51f86 24.0 MB SIG CRT SIG
Windows installer (32-bit) Windows b6a671274cf1d498c6c27d2322c23ab5 22.9 MB SIG CRT SIG
Windows installer (ARM64) Windows Experimental 3211c38af7ed3cfe3843fda78b9d6905 23.2 MB SIG CRT SIG
Windows embeddable package (64-bit) Windows b8069c786d1433d5cc0f61ee9ae0dcd8 10.1 MB SIG CRT SIG
Windows embeddable package (32-bit) Windows 58a92451042741be81431c5de014fa59 9.1 MB SIG CRT SIG
Windows embeddable package (ARM64) Windows 9e8e62731fbc1bc65ba96032ed316f4b 9.3 MB SIG CRT SIG