And then there is the Zelig modeling framework for R that I can’t imagine not using after having used it. Don’t get me wrong, I like Python well enough, and kn

And then there is the Zelig modeling framework for R that I can’t imagine not using after having used it. Don’t get me wrong, I like Python well enough, and knew it before I coded R. But Python is really behind R in stats support. I’d also add the tidyverse in there for general data munging. If I want libraries I’ll use R; if I want a programming language I love I'll use Racket or maybe Clojure; if I want some libraries and an okay programming language I’ll use Python, I guess.