Simon Willison’s Weblog


7 items tagged “playwright”


Guidepup. I’ve been hoping to find something like this for years. Guidepup is “a screen reader driver for test automation”—you can use it to automate both VoiceOver on macOS and NVDA on Windows, and it can both drive the screen reader for automated tests and even produce a video at the end of the test.

Also available: @guidepup/playwright, providing integration with the Playwright browser automation testing framework.

I’d love to see open source JavaScript libraries both use something like this for their testing and publish videos of the tests to demonstrate how they work in these common screen readers. # 14th March 2024, 4:07 am

Weeknotes: datasette-test, datasette-build, PSF board retreat

I wrote about Page caching and custom templates in my last weeknotes. This week I wrapped up that work, modifying datasette-edit-templates to be compatible with the jinja2_environment_from_request() plugin hook. This means you can edit templates directly in Datasette itself and have those served either for the full instance or just for the instance when served from a specific domain (the Datasette Cloud case).

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nat/natbot (via) Extremely devious hack by Nat Friedman: opens a browser using Playwright and then passes a DOM representation to GPT-3 in order to power a chat-style interface for driving the browser. Worth diving into the code to look at the prompt it uses, it’s fascinating. # 30th September 2022, 1:01 am

Bundling binary tools in Python wheels

I spotted a new (to me) pattern which I think is pretty interesting: projects are bundling compiled binary applications as part of their Python packaging wheels. I think it’s really neat.

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@newshomepages (via) Ben Welsh used my shot-scraper tool and GitHub Actions to launch a Twitter bot which tweets screenshots of newspaper homepages on a scheduled basis. Ben says: “The tech is so easy, I was able to pull it off in a couple hours at zero cost. A decade ago I ran a similar project using the cloud resources of the day. [...] It costs thousands of dollars and the screenshots were of much lower quality. Incredible progress!” # 12th March 2022, 7:21 pm

Weeknotes: Distracted by Playwright

My goal for this week was to unblock progress on Datasette by finally finishing the dash encoding implementation I described last week. I was getting close, and then I got very distracted by Playwright.

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shot-scraper: automated screenshots for documentation, built on Playwright

shot-scraper is a new tool that I’ve built to help automate the process of keeping screenshots up-to-date in my documentation. It also doubles as a scraping tool—hence the name—which I picked as a complement to my git scraping and help scraping techniques.

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