← Back to feed
AI Tools 71% 1 min readJun 23, 2026, 6:58 PM

OPFS + Pyodide test harness

Evolving story · 1 updatesOPFS + Pyodide Integration for Datasette LiteTimeline →
30-second summary

Simon Willison built a test harness combining OPFS and Pyodide to enable persistent SQLite file editing in-browser for Datasette Lite.

Full story

<p><strong>Tool:</strong> <a href="https://tools.simonwillison.net/opfs-pyodide">OPFS + Pyodide test harness</a></p>

<p>I've been pondering if <a href="https://lite.datasette.io/">Datasette Lite</a> - the Python Datasette application run entirely in the browser using Pyodide and WebAssembly - might be able to edit persistent SQLite files stored on the user's computer.</p>

<p>That's what <a href="https://developer.mozilla.org/en-US/docs/Web/API/File_System_API/Origin_private_file_system">OFPS</a> (Origin Private File System) is for, so I had Claude Code for web build me th

Source: OPFS + Pyodide test harness. Read the full piece at the source.

Sources · 1

Summary and analysis generated by AI (mistral). Always verify against the original sources.

Related
TickrWire

AI news intelligence. We aggregate, verify, summarise and explain the latest artificial intelligence news from open, legal sources.

Daily AI digest

Top AI stories, summarised, in your inbox each morning.

© 2026 TickrWire. Summaries and analysis are AI-generated and may contain errors.Privacy