Yes, Python does have a repl, but I've never seen anyone doing real "repl driven development" in Python in my 15+ years of using it (btw, just testing some code in the repl isn't anywhere near repl driven development). See the blog post linked above to understand what I'm talking about.
In Python, the repl is an accessory that helps testing small portions of code. In Clojure, the repl augments the editor, becoming an integral part of the development process.
My understanding of the parent argument was that the combo Django/Jupyter/pandas is "an ecosystem that's hard to beat" because of the tight feedback loop between writing the code and seeing what it does.
Ive never heard the term repl driven development, but I have been doing most of my coding in a jupyter/ipython notebook for around 7 years now and have been advocating it the whole time. The longer I do this the more I realize that I really need to try lisp
Awesome! That's exactly why I pointed out Lisp. Those who enjoy the tight feedback loop of Jupyter might also enjoy a language where this process is the natural way of doing things.
Agreed, the GUI repl may be more friendly to data scientists and analysts who know some coding but not emacs.
Furthermore, the marriage of application framework / application model wrappers with industry-leading data science tools sounds particularly special, and orthogonal to the presence of a repl.
