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Python 3.12.3

Release Date: April 9, 2024

This is the third maintenance release of Python 3.12

Python 3.12 is the newest major release of the Python programming language, and it contains many new features and optimizations. 3.12.3 is the latest maintenance release, containing more than 300 bugfixes, build improvements and documentation changes since 3.12.2.

Major new features of the 3.12 series, compared to 3.11

New features

Type annotations


  • The deprecated wstr and wstr_length members of the C implementation of unicode objects were removed, per PEP 623.
  • In the unittest module, a number of long deprecated methods and classes were removed. (They had been deprecated since Python 3.1 or 3.2).
  • The deprecated smtpd and distutils modules have been removed (see PEP 594 and PEP 632. The setuptools package continues to provide the distutils module.
  • A number of other old, broken and deprecated functions, classes and methods have been removed.
  • Invalid backslash escape sequences in strings now warn with SyntaxWarning instead of DeprecationWarning, making them more visible. (They will become syntax errors in the future.)
  • The internal representation of integers has changed in preparation for performance enhancements. (This should not affect most users as it is an internal detail, but it may cause problems for Cython-generated code.)

For more details on the changes to Python 3.12, see What's new in Python 3.12.

More resources

Full Changelog


Version Operating System Description MD5 Sum File Size GPG Sigstore SBOM
Gzipped source tarball Source release 3c5498a34d5226c9b746b1199f0bf2d9 25.9 MB SIG .sigstore SPDX
XZ compressed source tarball Source release 8defb33f0c37aa4bdd3a38ba52abde4e 19.7 MB SIG .sigstore SPDX
macOS 64-bit universal2 installer macOS for macOS 10.9 and later 6114a3bb9b288f23ab38dbbb959be1bf 43.6 MB SIG .sigstore
Windows installer (64-bit) Windows Recommended c86949710e0471a065db970290819489 25.5 MB SIG .sigstore
Windows installer (ARM64) Windows Experimental ef016521b5a147f3ded730801d36a350 24.7 MB SIG .sigstore
Windows embeddable package (64-bit) Windows 38cce2bf5b4de76db19a31f46a0720de 10.5 MB SIG .sigstore
Windows embeddable package (32-bit) Windows 65d873c723db66d6746e9872df5a715e 9.4 MB SIG .sigstore
Windows embeddable package (ARM64) Windows 3229271cac55ff913aad1bb46ebc9931 9.8 MB SIG .sigstore
Windows installer (32 -bit) Windows a95c4fbdce0b6a22ca7cfb450f57c616 24.2 MB SIG .sigstore