COBOL translation (author is inactive).

Isn't this just a duplicate of this?

For Python, this Kata is a nice opportunity to learn why the trivial instruction one may want to use shouln't be. Perhaps this could be precised in the details ?

Should have a test which shows that numbers can have more than one digit as that can change how parsing works.

You may want to block imports in Python, otherwise this is an extremely easy 6kyu. Example solution: https://www.codewars.com/kata/reviews/5d9dfbe5e6cc2d0001e3fae9/groups/5d9dfcdf628e4600018939cc

EDIT: making the change would disqualify most of the Python solutions, so it's to your discretion whether you want to change it or not.