题解 | #售罄的培根披萨#

#inventory 清单，存货
#题目有问题，输出str改成下面这两句
#'A pastrami order was deleted from list.'
#'There is really no pastrami in sandwich_orders!'

pizza_inventory = ['bacon','durian','bacon','bacon','chicken','durian']
'''
#一：
while True:
    if 'bacon' in pizza_inventory:
        pizza_inventory.remove('bacon')
        print('A pastrami order was deleted from list.')
    if 'bacon' not in pizza_inventory:
        break;
print('There is really no pastrami in sandwich_orders!')
'''
'''
#二：
while 'bacon' in pizza_inventory:
    pizza_inventory.remove('bacon')
    print('A pastrami order was deleted from list.')

if 'bacon' not in pizza_inventory:
    print('There is really no pastrami in sandwich_orders!')
'''
#三：
target = True
while target:
    if 'bacon' in pizza_inventory:
        pizza_inventory.remove('bacon')
        print('A pastrami order was deleted from list.')
    else:
        target = False
if 'bacon' not in pizza_inventory:
    print('There is really no pastrami in sandwich_orders!')