June 2026 monthly summary for picnixz/cpython: Implemented half-turn trigonometric functions in the Python math module to operate in units of pi, aligning with IEEE 754-2019 standards. Delivered new functions: acospi, asinpi, atanpi, atan2pi, cospi, sinpi, tanpi. This work reduces the need for radians-to-π conversions, improves numerical compatibility for users in domains like signal processing and graphics, and enhances the usability of the core math library. Implemented under a CPython C23-style approach; commit b6e66136cc8de969ab163896c6c831bf65c8f129, linked to GH-150534 and GH-150555.

May 2026 performance summary for python/cpython: Implemented runtime deprecation warnings for AST classes to surface planned removals ahead of Python 3.21, improving developer guidance and easing migration. This change closes a gap where deprecations since Python 3.9 lacked runtime feedback, enabling proactive transitions and reducing risk for downstream projects. Delivered with a focused commit referencing gh-140344 and aligned with the PEP 387 deprecation roadmap.

Month: 2025-09 Focus: Documentation update in python/cpython to improve clarity around URL handling in urllib.parse. This change targets reducing confusion and aligning documentation with actual runtime behavior, supporting downstream users and contributors.