如何使用不同的结果循环相同的变量

Question

嗨，我有一个学校项目，要求我编写一个程序，询问用户的详细信息，然后询问他们想要多大尺寸的比萨饼，以及需要多少配料。然后它会问他们是否想要另一个比萨饼。它会重复这个过程，直到他们说不或者他们有六个比萨饼

我真的不知道如何解释我的问题，但我不知道如何循环代码，所以它会要求另一个比萨饼，每个比萨饼都有不同的大小和数量的配料。我也不知道该怎么打印。 对不起，如果这是要求很多或它的混乱理解或如果代码只是痛苦的看啊哈

提前谢谢

CustomerName = input("Please input the customers name: ")
CustomerAddress = input("Please input the customers address: ")
CustomerNumber = input("Please input the customers number: ")
while True:
    PizzaSize = input("Please input pizza size, Small/Medium/Large: ")
    try:
        PizzaSize = str(PizzaSize)
        if PizzaSize == "Small" or "Medium" or "Large":
            break
        else:
            print("Size not recognized")
    except:
        print("Invalid input")
    
if PizzaSize == "Small":
    SizeCost = 3.25
elif PizzaSize == "Medium":
    SizeCost = 5.50
elif PizzaSize == "Large":
    SizeCost = 7.15





print(SizeCost)

while True:
    ExtraToppings = input("Any extra toppings, 0/1/2/3/4+ ? ")
    try:
        ExtraToppings = float(ExtraToppings)
        if ExtraToppings >= 0 and ExtraToppings <= 4:
            break
        else:
            print("Please insert a number over 0")
    except:
        print("Input not recognised")

if ExtraToppings == 1:
    ToppingCost = 0.75
elif ExtraToppings == 2:
    ToppingCost = 1.35
elif ExtraToppings == 3:
    ToppingCost = 2.00
elif ExtraToppings >= 4:
    ToppingCost = 2.50
else:
    print("Number not recognized")
print(ToppingCost)
``

Answer 1

首先，您应该将第二个while循环中的代码放在第一个while循环中。不需要两个while-true循环。而不是

while True:

放

pizza_count = 0     # how many pizzas they have
wantsAnotherPizza = True    

while pizza_count < 6 and wantsAnotherPizza:   # while they have less than 6 pizzas and they want another one
    pizza_count += 1    # increase pizza_count as they order another pizza

    # ... your code here from both of the while loops

    x = input("Do you want another pizza? (Y/N)")
    if x == "N" or x == "n":
        global wantsAnotherPizza
        wantsAnotherPizza = False:

Answer 2

您可以这样修改代码。我想你可以用字典简单地写出你的条件句。试试这个

from collections import defaultdict
customer_order = defaultdict(list)

customer_order['CustomerName'] = input("Please input the customers name: ")
customer_order['CustomerAddress'] = input("Please input the customers address: ")
customer_order['CustomerNumber'] = input("Please input the customers number: ")

pizza_size ={
    'small':3.25,
    'medium': 5.50,
    'large': 7.15
}

toppins= {'1': 0.75,
 '2':1.35,
'3':2.00,
 '4':2.50,
         }



order = int(input("How many orders would you like to make: "))

while order:
    PizzaSize = input("Please input pizza size, Small/Medium/Large: ").lower()
    ExtraToppings = input("Any extra toppings, 0/1/2/3/4+ ? ")
    try:
        if PizzaSize in pizza_size:
            size_cost= pizza_size[PizzaSize]
            if ExtraToppings:
                ToppingCost= toppins[ExtraToppings]
            else:
                print("Number not recognized")
                continue

            customer_order['order'].extend([{'size':PizzaSize,'toppings': ToppingCost}])
          
            order -= 1
        else:
            print("Size not recognized")
            continue
    except Exception as  msg:
        print("Invalid input", msg)
        continue
else:
    print('Your order is complete')
    print(customer_order)