#requested_toppings = []
requested_toppings = ['mushrooms', 'pepperoni', 'green peppers', 'extra cheese']
if requested_toppings:
    for requested_topping in requested_toppings:
        print(f'adding {requested_topping}.')
    print('\nFinished making your Pizza!')    
else:
    print('Are you sure you want a plain Pizza?')