Python 3.13 News November 2025 [new]

| Module | Purpose | |--------|---------| | tomllib (already in 3.11) – now supports writing via tomlkit in stdlib | TOML 1.0 reader/writer | | http.HTTPStatus – new codes: 526 (Invalid SSL), 527 (Railgun Error) | Web dev helpers | | zipfile.Path – now supports writing zip entries | Direct zip modification |

13 developments, ecosystem updates, and performance benchmarks as of November 2025. The No-GIL Migration: State of the Ecosystem python 3.13 news november 2025

As of November 2025, the Python ecosystem has undergone one of its most significant transformations in recent history. With the stable release of Python 3.13 now celebrating its first anniversary and the imminent feature freeze of Python 3.14, the community is fully adapting to two paradigm-shifting changes: the experimental Just-In-Time (JIT) compiler and the Free-Threaded build (PEP 703). This paper outlines the current state of CPython, adoption rates, and the performance benchmarks observed in production environments over the last year. | Module | Purpose | |--------|---------| | tomllib