Notice: While JavaScript is not essential for this website, your interaction with the content will be limited. Please turn JavaScript on for the full experience.

Python 3.10.0a4

Release Date: Jan. 4, 2021

This is an early developer preview of Python 3.10

Major new features of the 3.10 series, compared to 3.9

Python 3.10 is still in development. This release, 3.10.0a4 is the fourth of six 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 (2021-05-03) and, if necessary, may be modified or deleted up until the release candidate phase (2021-10-04). Please keep in mind that this is a preview release and its use is not recommended for production environments.

Many new features for Python 3.10 are still being planned and written. Among the new major new features and changes so far:

  • PEP 623 -- Remove wstr from Unicode
  • PEP 604 -- Allow writing union types as X | Y
  • PEP 612 -- Parameter Specification Variables
  • PEP 626 -- Precise line numbers for debugging and other tools.
  • bpo-38605: from __future__ import annotations (PEP 563) is now the default.
  • PEP 618 -- Add Optional Length-Checking To zip.

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

The next pre-release of Python 3.10 will be 3.10.0a5, currently scheduled for 2021-02-01.

More resources

And now for something completely different

The Majumdar–Papapetrou spacetime is one surprising solution of the coupled Einstein-Maxwell equations that describe a cluster of static charged black holes with the gravitational and the electrostatic forces cancelling each other out. Each one of these many black holes of the multi-black holes system has a spherical topology and follows the Reissner–Nordström metric. Unsurprisingly, the movement of a test particle in such spacetime is not only a very chaotic system but also has some fractals hiding the complexity of its movement.


Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release 6415214089382120f6d378752411baff 25281638 SIG
XZ compressed source tarball Source release f59708a8a36365d58a82f75c374ebd5f 18706760 SIG
macOS 64-bit universal2 installer macOS for macOS 10.9 and later, including macOS 11 Big Sur on Apple Silicon (experimental) a99aa2916523711e639f62eb652befeb 37601444 SIG
Windows embeddable package (32-bit) Windows 950552ed1dc54998443f9c32934610c1 7582086 SIG
Windows embeddable package (64-bit) Windows d23ab4222677584d52e2f89e74702d6b 8432902 SIG
Windows help file Windows 894b6ec8b3d0a749d33c3e359f7a064e 8916438 SIG
Windows installer (32-bit) Windows 966b61600dd0a4572ae38210540f84f5 27114592 SIG
Windows installer (64-bit) Windows Recommended f6ab1b668b1e009b796bc098c247b2c7 28241808 SIG