Jan Giacomelli • 5/12/2026

AI-powered Python rewrite to Rust

This article presents a 4-part series on rewriting Python code to Rust using AI tools like Claude Code. It emphasizes ensuring existing code is well-tested, converting tests to contract tests with a Rust wrapper, building the Rust implementation, and using property-based testing to catch subtle bugs like Unicode indexing issues. The approach applies to other languages like Cython or C++ with Python bindings. It includes a repository with examples and promotes a paid course on Python testing.

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#Python #rust #property-based testing