compute_bill function does not have any information concerning what
food refers to until someone calls the function.
If a programmer does this ...
shopping_list = ["banana", "orange", "apple"]
... then the function's
food parameter will refer to the
shopping_list argument, and the function will process that
You can experiment with it to find out what happens. However, be aware that in Exercise 12. Stocking Out, Codecademy does not want you to call the
compute_bill function. You can can call the function if you want, but within that exercise, comment out the calling statement in order to pass.