One advantage Lisps have is that they tend to be much more inclusive of functional programming. Python supports (limited) lambdas and some higher-order functions, but it really feels like the language tries to steer you away from too much functional programming.

The best time to learn about different paradigms is right when you're starting out; if you basically only learn how to program imperatively, you're liable to start believing that that's the only way to go. I know because this happened to me (I was self-taught and learned a different set of languages, but it had the same effect); ultimately it took me longer to come to and start using functional programming properly than it would have had I learned about it at the very beginning.