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Python 3.13.0a3

Release Date: Jan. 17, 2024

This is an early developer preview of Python 3.13

Major new features of the 3.13 series, compared to 3.12

Python 3.13 is still in development. This release, 3.13.0a3, is the third 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 (2024-05-07) and, if necessary, may be modified or deleted up until the release candidate phase (2024-07-30). Please keep in mind that this is a preview release and its use is not recommended for production environments.

Many new features for Python 3.13 are still being planned and written. Work continues apace on both the work to remove the Global Interpeter Lock, and to improve Python performance. The most notable changes so far:

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

The next pre-release of Python 3.13 will be 3.13.0a4, currently scheduled for 2023-02-13.

More resources


Version Operating System Description MD5 Sum File Size GPG Sigstore
Gzipped source tarball Source release d6c18d8fd1f989920b3b4a701c7d58d6 25.5 MB SIG .sigstore
XZ compressed source tarball Source release 4c8105c4a3d15cb44f43f9dc09f4650a 19.4 MB SIG .sigstore
macOS 64-bit universal2 installer macOS for macOS 10.9 and later 7ad28f1eb02727c811b61ce0fbe05e50 42.9 MB SIG .sigstore
Windows installer (64-bit) Windows Recommended e820d7ddda3d411f3e1f2db98e1ed195 25.6 MB SIG .sigstore
Windows installer (ARM64) Windows Experimental 2850f70d63bb3b34724811ec87b4ac95 24.9 MB SIG .sigstore
Windows embeddable package (64-bit) Windows 754e0cb58e81f77bd939d333dd4097b8 10.3 MB SIG .sigstore
Windows embeddable package (32-bit) Windows bb004a1f20516c3aed51ed00d0dc219b 9.2 MB SIG .sigstore
Windows embeddable package (ARM64) Windows ce651b34a88eacebbe11b8b7d00111bf 9.5 MB SIG .sigstore
Windows installer (32 -bit) Windows a8f35933e7db844a557c0670d405770d 24.4 MB SIG .sigstore