This is first maintenance release of Python 3.14

Python 3.14.1 is the first maintenance release of 3.14, containing around 558 bugfixes, build improvements and documentation changes since 3.14.0.

Major new features of the 3.14 series, compared to 3.13

Some of the major new features and changes in Python 3.14 are:

New features

PEP 779: Free-threaded Python is officially supported
PEP 649: The evaluation of annotations is now deferred, improving the semantics of using annotations.
PEP 750: Template string literals (t-strings) for custom string processing, using the familiar syntax of f-strings.
PEP 734: Multiple interpreters in the stdlib.
PEP 784: A new module compression.zstd providing support for the Zstandard compression algorithm.
PEP 758: except and except* expressions may now omit the brackets.
Syntax highlighting in PyREPL, and support for color in unittest, argparse, json and calendar CLIs.
PEP 768: A zero-overhead external debugger interface for CPython.
UUID versions 6-8 are now supported by the uuid module, and generation of versions 3-5 are up to 40% faster.
PEP 765: Disallow return/break/continue that exit a finally block.
PEP 741: An improved C API for configuring Python.
A new type of interpreter. For certain newer compilers, this interpreter provides significantly better performance. Opt-in for now, requires building from source.
Improved error messages.
Builtin implementation of HMAC with formally verified code from the HACL* project.
A new command-line interface to inspect running Python processes using asynchronous tasks.
The pdb module now supports remote attaching to a running Python process.

For more details on the changes to Python 3.14, see What’s new in Python 3.14.

Build changes

PEP 761: Python 3.14 and onwards no longer provides PGP signatures for release artifacts. Instead, Sigstore is recommended for verifiers.
Official macOS and Windows release binaries include an experimental JIT compiler.
Official Android binary releases are now available.

Incompatible changes, removals and new deprecations

Python install manager

The installer we offer for Windows is being replaced by our new install manager, which can be installed from the Windows Store or from its download page. See our documentation for more information. The JSON file available for download contains the list of all the installable packages available as part of this release, including file URLs and hashes, but is not required to install the latest release. The traditional installer will remain available throughout the 3.14 and 3.15 releases.

More resources

Online documentation
PEP 745, 3.14 Release Schedule
Report bugs at github.com/python/cpython/issues
Help fund Python directly (or via GitHub Sponsors) and support the Python community

And now for something completely different

Seki Takakazu (関孝和; c. March 1642 – December 5, 1708) was a Japanese mathematician and samurai who laid the foundations of Japanese mathematics, later known as wasan (和算, from wa (“Japanese”) and san (“calculation”).

Seki was a contemporary of Isaac Newton and Gottfried Leibniz but worked independently. He created a new algebraic system, worked on infinitesimal calculus, and is credited with the discovery of Bernoulli numbers (before Bernoulli’s birth).

Seki also calculated π to 11 decimal places using a polygon with 131,072 sides inscribed within a circle, using an acceleration method now known as Aitken’s delta-squared process, which was rediscovered by Alexander Aitken in 1926.

Enjoy the new release

Thanks to all of the many volunteers who help make Python Development and these releases possible! Please consider supporting our efforts by volunteering yourself or through organisation contributions to the Python Software Foundation.

Regards from deepest darkest Helsinki,

Your release team,
Hugo van Kemenade
Ned Deily
Steve Dower
Łukasz Langa