While I agree with this (in prod or development headed to prod), I'd love to be able to hand this to some of my colleagues who are either from Ruby or Lisp back

While I agree with this (in prod or development headed to prod), I'd love to be able to hand this to some of my colleagues who are either from Ruby or Lisp backgrounds or who do data science for use in Jupyter notebooks. Being able to just start Jupyter, start coding some small experiment and not worry about imports would be useful. Further, it would help my colleagues in data science who require a step by step walkthrough whenever we need to generate requirements.txt. In my personal case, I have loads of dead code directories for various half-remembered Python ideas. It'd be convenient to have a lighter-weight "experiments" dir using something like this.