Pyodide: A Python distribution for the browser

on YouTube ↗41m

" summary

Pyodide ports CPython 3.9 to WebAssembly so Python runs in the browser and Node.js, bundles a rich JavaScript↔Python FFI, and compiles popular binary extensions (numpy, pandas, scipy, matplotlib, cryptography). It provides micropip installs pure‑Python wheels and a build pipeline for binary wheels; the ecosystem includes ~120 packages and real demos: JupyterLite notebooks, live in‑browser ML training and inference, and a French high‑school deployment with ~100k weekly users. Constraints are concrete: no threading or sockets, subprocesses are missing, filesystem is in‑memory, and typical downloads are tens of megabytes (≈18 MB compressed / ≈30 MB uncompressed).

AI-written summary · about

" chapters (32)

1. 0:00Intro
2. 1:17Serverless Python apps for the web?
3. 2:27What is WebAssembly?
4. 4:04The emscripten build toolchain
5. 4:18Pyodide Components
6. 5:41Upstream CPython WASM work
7. 7:03Related projects
8. 8:34Pure Python packages with micropip
9. 9:06Packages with binary extensions
10. 11:12Supported Python packages in Pyodide
11. 12:51Foreign function interface (JS # Python)
12. 14:54Example: Python utils from JavaScript
13. 16:05Example: random sample
14. 18:27Examples: fetch API from Python
15. 18:47Examples: Buffers
16. 19:33Emscripten Host Environment
17. 21:24Client-only Architecture
18. 22:02Client-only Web Apps in Python
19. 23:35A growing ecosystem
20. 24:28Notebook environments
21. 25:21Pyodide in Education
22. 26:33Deploying machine learning models Classical workflow
23. 27:41Deploying scikit-learn models in Pyodide Use pickle?
24. 28:49Classifier decision boundary example
25. 30:11Packaging Scipy and Fortran
26. 31:31Function Pointer Cast Handling
27. 34:00Getting http.client to work (WIP)
28. 35:25Asyncio in the browser
29. 36:15Download sizes for packages
30. 37:04Make Python package sizes web friendly
31. 38:10Roadmap
32. 39:49Acknowledgement

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