Simon Willison’s Weblog

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10th February 2026

Tool Pyodide REPL — Execute Python code directly in your web browser using Pyodide, a port of CPython to WebAssembly. This REPL provides an interactive Python environment with support for multiple Pyodide versions, single-line and multi-line input modes, and command history navigation. The interface is optimized for both desktop and mobile devices, with a dark theme and responsive layout that prevents content from being hidden behind on-screen keyboards.

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This is a beat by Simon Willison, posted on 10th February 2026.

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