Python 3.14, nicknamed "Pi" due to its version number, is now the stable standard. This release introduced several landmark features that developers are beginning to integrate this November:
Type annotations are now evaluated lazily by default. This change significantly reduces startup overhead and removes the need for from __future__ import annotations to handle forward references. cpython release november 2025 new
A new compression.zstd module brings built-in support for the high-performance Zstandard compression algorithm. Python 3.15: The Alpha Phase Begins What's new in Python 3.14 — Python 3.14.4 documentation Python 3
The experimental "no-GIL" build from Python 3.13 is now an officially supported variant. This allows CPU-bound Python threads to run in true parallel on multi-core systems, though it currently requires a specialized installer or build flag. A new compression
Introducing the t"" prefix, PEP 750 provides a more controlled way to perform string interpolation. Unlike f-strings, t-strings return a Template object, allowing for custom processing and safer domain-specific substitutions.