People coming from a GUI-only background will have a lot of fun getting used to the command-line. IMHO it would be a good idea to have them practice. I'd be happy to contribute one or more of my super-simple exercises:

https://code-maven.com/slides/python/exercise-rectangle-argv
https://code-maven.com/slides/python/exercise-calculator-argv

This might require the understanding of lists, though one could explain how to use sys.argv and forward reference to list saying "more detailed explanation will follow".