def checkOrUncheck(check): my_view = View() my_database = ShoppingList() user_input = my_view.takeInput("Enter an ID of an ite in your list: ") try: user_input = int(user_input) except ValueError: return "Not a number. Try again" found_result = my_database.checkID(user_input) if len(found_result) == 0: return "ID not found" else: my_database.updateChecked(check, user_input) return check