I wouldn’t call it enormous — Python can be used as an interactive shell (there’s even a toy “operating system” that uses it as the only text shell), and traditional shells can write (simpler) versions of software that’s normally made in Python https://news.ycombinator.com/item?id=23643096
To clarify: I didn't mean the tools, they do indeed overlap in functionality. I meant the activities you refered to, "program my computer" and "interactively command my computer".
