0.5.0

What's Changed

Version 0.5.0 introduces a brand new lazy runtime which makes working with expensive notebooks much more ergonomic, and it also makes it possible to export notebooks as markdown.

Highlights

Lazy runtime. We've heard your feedback: you can now configure the marimo runtime to be lazy, giving you full control over when cells are run. When a cell is run, instead of automatically running affected cells, marimo's lazy runtime will mark them as stale. Cells are still always run with the latest inputs (stale parents of a cell are run if needed), and your notebook is still required to be a DAG, so you're still guaranteed that your code and outputs are consistent.

Learn more: https://docs.marimo.io/guides/runtime_configuration.html

Export as markdown. Export marimo notebooks as markdown with marimo export md notebook.py -o notebook.md, or convert markdown to marimo with marimo convert notebook.md > notebook.py.

Shout out to @dmadisetti for contributing this feature.

What's coming

Future updates in the 0.5.x series will bring more improvements to both the runtime and using markdown -- stay tuned!

All changes

Thanks @Ubehebe for making your first contribution; welcome to the marimo fam!

• feat: convert and export from markdown by @dmadisetti in #1296
• fix: add markdown sanitization for malicious notebooks by @dmadisetti in #1315
• fix: handle duplicate columns in pandas when inferring datatype by @mscolnick in #1313
• fix: don't crash the table on 1 million rows by @mscolnick in #1314
• test: consolidate some 'edit' e2e tests to a single server by @mscolnick in #1320
• Run typos checks in makefile by @akshayka in #1318
• fix: allow int columns in mo.ui.dataframe by @mscolnick in #1322
• chore: improve wasm development, e2e test by @mscolnick in #1323
• improvement: load pyodide dev version on marimo dev releases by @mscolnick in #1324
• feat: lazy runtime by @akshayka in #1302
• refactor: lazy-load top-level pages, reduce initial page load by @mscolnick in #1295
• improvement: add cell actions and input/output variables to dag viewer panel by @mscolnick in #1328
• fix: marimo config to follow_symlink in StaticFiles by @Ubehebe in #1327
• fix: Fix playwright tests by @mscolnick in #1329
• Persist App state + Cell state in md conversions by @dmadisetti in #1326
• docs: lazy runtime by @akshayka in #1333
• 0.5.0 by @akshayka in #1334

New Contributors

• @Ubehebe made their first contribution in #1327

Full Changelog: 0.4.11...0.5.0