The vast majority of Cython functions are now exposed in pure Python mode, ... Python 3.14 Changes Type Hints Forever: Lazy Annotations Explained. Jun 12, 2025 3 mins. Python.

The plan was to mark them as deprecated for 3.11 and 3.12, and then remove them entirely in Python 3.13. As of now, those “dead batteries” (as they’ve been called) are now permanently removed.