Python 3.13.1 Release Notes -

One of the most immediate changes you will notice in Python 3.13.1 is the overhauled interactive interpreter (REPL), which is now based on code from the PyPy project .

Tracebacks and prompts are highlighted in color by default, making it significantly easier to identify errors at a glance. python 3.13.1 release notes

Python 3.13.1 is the first maintenance release of the Python 3.13 series, focusing on stability and bug fixes following the major feature introductions of 3.13.0. Python in Plain English Key Context: What’s in Python 3.13? While 3.13.1 is a "bugfix" release, it carries forward the transformative features of the 3.13 cycle. According to the official Python documentation , these include: Free-Threaded CPython: A major experimental feature that allows running CPython without the Global Interpreter Lock (GIL), enabling better multi-core utilization. Improved Interactive Shell: A significantly upgraded REPL with multi-line editing, colorized prompts, and help menus. A Just-In-Time (JIT) Compiler: An experimental JIT compiler designed to improve performance for specific workloads. Better Error Messages: More precise and helpful tracebacks to assist in debugging. Python documentation +1 Changes in 3.13.1 As a maintenance update, 3.13.1 includes: Core Bug Fixes: Refinements to the internal interpreter and standard library to address issues found in the initial 3.13.0 release. Security Patches: Critical updates to ensure the environment remains secure against known vulnerabilities. Performance Stability: Minor tweaks to the new JIT and free-threading features to ensure they behave as expected in production-like environments. Medium Should You Upgrade? If you are on 3.13.0: Upgrading to 3.13.1 is One of the most immediate changes you will

Unfortunately, I have to inform you that there is no Python 3.13.1 release yet. The latest version of Python is 3.11.7, which was released on December 6, 2022. Python in Plain English Key Context: What’s in Python 3

A preliminary copy-and-patch JIT compiler has been added. While disabled by default in standard builds, it provides a foundation for massive performance gains in future releases.