Lisp Vs. Python

I am looking to learn another programming language, I am a bit of a newbie but I know C, Java, and C++ rather well and am looking to expand.

I am interested in AI so I am considering Lisp.
But I also hear python is on the rise so I am considering that.

Which should I choose and why?

>>35
It's better this way. You get paid more because it's considered exotic.
Same goes for periods COBOL and FORTRAN. I'm glad even thr universities now helps to scare off newfags from it.