正在开发一个购买电影票的程序。试着弄清楚我是否需要一个while循环来完成我想要完成的任务？

Question

我正在做一个电影票的节目。程序必须计算一张电影票的价格。该程序应该提示用户顾客的年龄和电影是否为3D。儿童和老年人应享受折扣价格。3D电影应该有附加费。程序应根据输入的年龄和电影是否为3D格式输出电影票的票价。我已经完成了一半的程序。儿童和老年人可享受折扣价格。

我几乎完成了程序，但当我询问电影是否为3D时，它会打印出相同的是和否的回答。当用户输入"No“时，我想让它说门票的价格保持不变。而且，当他们输入"Yes“时，它需要显示3D门票的新价格。当输入" yes“时，它已经做了正确的事情，但问题是，当输入" no”时，它显示相同的输出，不确定我是否需要将yes和no存储在另一个变量中，或者可能是while循环中？有谁能告诉我怎么走吗？任何帮助都是非常感谢的。

age = int(input("Welcome to the movie theatre. What is your age? Children and senior citizens will receive a discount.   "))

children_ticket = 8

adult_ticket = 10

senior_ticket = 8

if age <= 12:
    print("The children's ticket costs"  ,children_ticket)
    
if age >= 65:
    print("The senior citizens ticket costs" ,senior_ticket)

if (age >= 13) and (age <= 64):
    print("The adult ticket costs" ,adult_ticket)


three_d = input("Is the movie you're watching 3D? If so, they have a surcharge.  ")

three_d_surcharge = 2

if age <= 12:
    print("The children's ticket for 3D costs"  ,children_ticket + three_d_surcharge)
    
if age >= 65:
    print("The senior citizens ticket for 3D costs" ,senior_ticket + three_d_surcharge)

if (age >= 13) and (age <= 64):
    print("The adult ticket for 3D costs" ,adult_ticket + three_d_surcharge)

3D movie ticket results

Answer 1

您需要将three_d的结果包装在if语句中，如果用户输入Yes，则.lower()允许更宽的输入范围

age = int(input("Welcome to the movie theatre. What is your age? Children and senior citizens will receive a discount.   "))

children_ticket = 8

adult_ticket = 10

senior_ticket = 8

if age <= 12:
    print("The children's ticket costs", children_ticket)

if age >= 65:
    print("The senior citizens ticket costs", senior_ticket)

if (age >= 13) and (age <= 64):
    print("The adult ticket costs", adult_ticket)

three_d = input("Is the movie you're watching 3D? If so, they have a surcharge.  ")

three_d_surcharge = 2

if three_d.lower() == "yes":
    if age >= 65:
        print("The senior citizens ticket for 3D costs", senior_ticket + three_d_surcharge)
    elif age > 12:
        print("The adult ticket for 3D costs", adult_ticket + three_d_surcharge)
    else:
        print("The children's ticket for 3D costs", children_ticket + three_d_surcharge)
else:
    print("No 3d surcharge")

您还可以更改if检查的工作方式，以减少检查次数。

Answer 2

您必须为three_d变量执行if else语句。就像这样

if three_d=='yes':
    ...
else:
    print("the price of the ticket stays the same")