Simon Willison’s Weblog

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6th February 2026

Research Monty WASM + Pyodide — Monty WASM + Pyodide explores compiling Monty—a Rust-based, sandboxed Python interpreter—into WebAssembly for seamless browser access. It provides two integration paths: a standalone WASM module accessible directly from JavaScript, and a Pyodide-compatible wheel for usage in Python-in-the-browser environments. The project enables safe, dependency-free Python code execution with features like variable injection, output capturing (including print statements), and robust error handling.
Posted 6th February 2026 at 6:05 pm

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