Simon Willison’s Weblog

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25th September 2025

Tool MicroPython Code Executor — Execute Python code in a sandboxed MicroPython WebAssembly environment with output displayed in real-time. Code is automatically saved to the URL for convenient sharing and persistence, and the environment supports JavaScript interoperability including the `fetch()` API for making HTTP requests. Built-in examples demonstrate common programming patterns from basic operations to working with APIs.

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This is a beat by Simon Willison, posted on 25th September 2025.

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