In my opinion, Python is good enough at a lot of different tasks. I don't think is the best possible language for everything, but it's close enough that it's better than having to keep more languages in your head.

I do a mix of math programming and general programming and I'd like to stay in one language if feasible. I would far rather use a well-designed, general-purpose language with math libraries than try to use a mathematical language for general-purpose programming.