Python plans to add Rust to CPython: first code in 3.16, mandatory by 2029

At the Python Language Summit, the Rust for CPython team presented a plan to integrate Rust: Python 3.16 (October 2027) would ship optional Rust support with a zlib module built on zlib-rs, while Rust would become required to build CPython no earlier than Python 3.18 in 2029. The team has about 60 developers, including several Python core developers and a delegation from the Rust project.

• Optional Rust in Python 3.16 (October 2027), mandatory no earlier than 3.18 in 2029
• First module is zlib via zlib-rs, which would speed up pip install
• Project team has about 60 developers, including Python core developers
• The number of type-crash issues in CPython keeps rising, Rust is meant to help