https://observablehq.com/framework/getting-started
And plus you can import libraries directly from a CDN rather than needing to use npm or yarn to manage dependencies. (Though we plan on supporting the latter in the future, too.)
https://observablehq.com/framework/javascript/imports
See this example for getting started with Python:
https://github.com/observablehq/framework/tree/main/examples...
But of course we’d love to add more affordances and documentation for other languages. We’re naturally biased towards JavaScript as our focus has historically been on visualization, but I like to think we’re making progress on the polyglot dream.