Python's plans for async was originally to use generators (that's the original reason for `yield from` IIRC: an async function may need to yield / await multipl

Python's plans for async was originally to use generators (that's the original reason for `yield from` IIRC: an async function may need to yield / await multiple times before it "completes" and returns a value). Ultimately async was introduced because: - mixing async-generators and sync-generators was extremely confusing and difficult to wrap your way around especially if you needed to nest them (e.g. a generator yielding awaitables) - lots of statements may need async for which generators are inconvenient and require manual desugaring and ad-hoc protocols with pure generators most notably asynchronous iterables