A Mandelbrot set calculation (pure Python) ran in 0.41s on 3.13 vs. 0.58s on 3.12 – a 29% improvement.
For the most accurate and up-to-date information on Python 3.13 and its release in November 2025, I recommend keeping an eye on the official Python channels. As the release approaches, more detailed information about features, release notes, and any changes to the release schedule will likely become available. python 3.13 release news 2025 november
: Most major libraries and frameworks (like NumPy or Django) will have full stable support for 3.13, while early adopters begin shifting focus to the newly released Python 3.14. Python Release Timeline Version Release Date Status in November 2025 Python 3.13 October 2024 Bugfix Mode (Stable) Python 3.14 October 2025 Active/New (Current Stable) Python 3.15 October 2026 In Development (Alpha) Would you like to look into the specific A Mandelbrot set calculation (pure Python) ran in 0