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.

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.