Also MDN has a fantastic Promise article with examples about wrapping a function with a promise.[0]

[0] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

It's a little unclear, but I think he wants to integrate Python (Pyodide) coroutines into the JS event loop-- so async/await of Python code works seamlessly in the browser, and you can await Python code from within JS (and vice versa).

Any JS Promise is awaitable from JS; JS async/await is (more or less) syntactic sugar on top of promises.

Sorry, I meant to use "await" in Python to await Javascript Promises.