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Python 3.11.0a4

Release Date: Jan. 14, 2022

This is an early developer preview of Python 3.11

Major new features of the 3.11 series, compared to 3.10

Python 3.11 is still in development. This release, 3.11.0a4 is the fourth of seven planned alpha releases.

Alpha releases are intended to make it easier to test the current state of new features and bug fixes and to test the release process.

During the alpha phase, features may be added up until the start of the beta phase (2022-05-06) and, if necessary, may be modified or deleted up until the release candidate phase (2022-08-01). Please keep in mind that this is a preview release and its use is not recommended for production environments.

Many new features for Python 3.11 are still being planned and written. Among the new major new features and changes so far:

  • PEP 657 -- Include Fine-Grained Error Locations in Tracebacks
  • PEP 654 -- Exception Groups and except*
  • The Faster Cpython Project is already yielding some exciting results: this version of CPython 3.11 is ~ 19% faster on the geometric mean of the PyPerformance benchmarks, compared to 3.10.0.
  • (Hey, fellow core developer, if a feature you find important is missing from this list, let Pablo know.)

The next pre-release of Python 3.11 will be 3.11.0a5, currently scheduled for Wednesday, 2022-02-02.

More resources

And now for something completely different

The Magnus effect is an observable phenomenon that is commonly associated with a spinning object moving through a fluid. The path of the spinning object is deflected in a manner that is not present when the object is not spinning. The deflection can be explained by the difference in pressure of the fluid on opposite sides of the spinning object and this effect is dependent on the speed of rotation.

The most readily observable case of the Magnus effect is when a spinning sphere (or cylinder) curves away from the arc it would follow if it were not spinning. It is often used by association football and volleyball players, baseball pitchers, and cricket bowlers.


Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release 1a59168d4ccf2f4605aa19485e8b9f4d 24.0 MB SIG
XZ compressed source tarball Source release 9de26ba99545171666206d7e19a1bacf 17.9 MB SIG
macOS 64-bit universal2 installer macOS for macOS 10.9 and later a6e2b3e12096df8014532ba1b62044d7 39.4 MB SIG
Windows installer (64-bit) Windows Recommended 2753eaa9c28a24b7d7b18790baecc899 27.0 MB SIG
Windows installer (32-bit) Windows 88323b413a9fbec08d862b316a66bac4 25.9 MB SIG
Windows help file Windows 2e14c646d255932b7f2503ec251c8b77 8.9 MB SIG
Windows embeddable package (64-bit) Windows d6962b1810a68d3cccd3ae95deb21d16 9.8 MB SIG
Windows embeddable package (32-bit) Windows a8604d48e64209fd464cc6b1a45f4beb 8.8 MB SIG