Others have suggested autocomplete before. I opened https://github.com/alexmojaki/futurecoder/issues/120 in response as a place to talk about it. But in general my opinion is that it would probably actually be harmful to learning for beginners, and I'd need to see evidence to convince me otherwise.
Here's my favorite explanation why: https://cseducators.stackexchange.com/a/634
Here's another similar discussion: https://cseducators.stackexchange.com/questions/5777/python-...