writing it in python makes me actually want to read the book, in fact i definitely will give it a read. if it was done in rust or go id probably skip it, and c++ is just too hard to look at for a fun project. will come back after reading and hopefully have something more meaningful to say about it.
Apparently some of it now runs in the browser ("in the book itself") by compiling Python to JS?
https://browserbook.substack.com/p/compiling-python-to-js