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Python 3.11.0a1

Release Date: Oct. 5, 2021

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, 3.11.0a1 is the first 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
  • The Faster Cpython Project is already yielding some exciting results: this version of CPython 3.11 is ~12% 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 3.11.0a2, currently scheduled for 2021-11-02.

More resources

And now for something completely different

Zero-point energy is the lowest possible energy that a quantum mechanical system may have. Unlike in classical mechanics, quantum systems constantly fluctuate in their lowest energy state as described by the Heisenberg uncertainty principle. As well as atoms and molecules, the empty space of the vacuum has these properties. According to quantum field theory, the universe can be thought of not as isolated particles but as continuous fluctuating fields: matter fields, whose quanta are fermions (i.e., leptons and quarks), and force fields, whose quanta are bosons (e.g., photons and gluons). All these fields have a non zero amount of energy called zero-point energy. Physics currently lacks a full theoretical model for understanding zero-point energy; in particular, the discrepancy between theorized and observed vacuum energy is a source of major contention


Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release 83f9397a8a7677d5f59d38773ab4afd0 23.8 MB SIG
XZ compressed source tarball Source release c163bd09fdc80116dafe97bf7c40ff3f 17.8 MB SIG
macOS 64-bit universal2 installer macOS for macOS 10.9 and later f550b51617d168674c004274bf68bcec 38.3 MB SIG
Windows installer (64-bit) Windows Recommended 65cd675ec5b78cb29b065ea04daff6ab 27.2 MB SIG
Windows installer (32-bit) Windows 2307c82e8efbb13b55e71835f9816aac 26.1 MB SIG
Windows help file Windows 9507943edab24066a02da133f162c082 9.2 MB SIG
Windows embeddable package (64-bit) Windows a8c5b8265380259845fdc2e8b6bf4789 9.4 MB SIG
Windows embeddable package (32-bit) Windows 9c65afbc53083041e4b9c39f6b341ec1 8.5 MB SIG