Just started learning Lisp (Emacs Lisp), and I am planning on doing a deep dive in Common Lisp. Using Python and Pandas for my day to day scripting. Common Lisp does not have the ecosystem in terms of packages compared to Python (or JS / NodeJS), but hacking Lisp feels extremely good. I intend to use it for prototyping, for all kinds of hacking that does not involve using available packages.