Yeah, point taken about my bias. Dealing with python via jupyter has been my biggest source of frustration with python. But there are still plenty of cases whe

Yeah, point taken about my bias. Dealing with python via jupyter has been my biggest source of frustration with python. But there are still plenty of cases where you will come across python via a bad interface, such as a shell interface to a server that I haven't set up properly (I come across this a lot since I've a lot of code running in clusters), and new computers or other people's bad setups or computers. Even when using elpy-mode in Emacs, I've had problems when I tried to tabify and untabify a file (to change indentation length), which completely changed program logic in multiple places, and resulted in subtle bugs that I caught much later.