Submission + - Rust for CPython (python.org)
RoccamOccam writes: “No one said ‘don’t do this’ last year”. After testing the waters at PyCon US 2025, David Hewitt returned to the Python Language Summit asking what Python core developers want from Rust, along with proposed timelines, phases, and success criteria for how the Rust for CPython project might proceed and become a permanent fixture within the CPython project.
The Rust for CPython team has selected the zlib module as the first module to be given an optional Rust implementation because they “wanted to achieve a significant improvement” with a “small scope”. The proposed Rust implementation will use zlib-rs, which is “heavily tested and used by the Firefox, uv, and Cargo” projects and “faster than zlib and zlib-ng on many platforms”.
The Rust for CPython team has selected the zlib module as the first module to be given an optional Rust implementation because they “wanted to achieve a significant improvement” with a “small scope”. The proposed Rust implementation will use zlib-rs, which is “heavily tested and used by the Firefox, uv, and Cargo” projects and “faster than zlib and zlib-ng on many platforms”.
