Question

我是Python的新手，并且在周末进行了一些练习。此刻，我被困在一个特定的人上，这要求我制作电影票预订程序。

我一直在研究如何为特定年龄段提供百分比值，我在代码中留下了一些注释，以说明需要包含的内容。

14.95的标准票价必须有10％的折扣和15％的折扣。

我需要使用一个名为“ buyTicket（）”的函数，该函数已经包含了用于百分比计算步骤的参数。

截至目前，该程序可以识别年龄，但是我不确定如何在特定年龄段增加百分比，然后在选择每张票后将票价总计起来。

下面是我当前的代码。关于包含和使用什么的任何建议，将不胜感激！

谢谢。

def cinema():
age = int(input("Please enter your age: "))

if age < 18:
    print("Sorry. You are not over 18 years old. You cannot watch this movie.")

if age >= 18:
     print("You are allowed to see the film. Standard ticket price is £14.95 ")

#twentydiscount = 10% (over 20)
#oapdiscount = 15% (over 65)

def buyTicket(percentageDiscount):
    if age <= 20:
        print("You are under 20 years old. You are eligible for a 10% discount. Your ticket price will be", percentageDiscount)

    elif age >= 65:
        print("You are 65 years or over. You are eligible for a 15% discount. Your ticket price will be", percentageDiscount)
    else:
        print("You are", age, "years old. Your ticket price will be £14.95")

# totalticketprice = (adding up prices of tickets after tickets have been selected each time)

while (True):
   cinema()
   anotherticket = input("Do you want to find out more information about another ticket? (Yes/No): ")
   if anotherticket == 'No':
    exit()
buyTicket(percentageDiscount)

Answer 1

尽量不要将逻辑和界面（用户的打印件）混淆得太多。始终先关注您的逻辑：

存储原始价格并将其保存在变量中
根据购买者的年龄，将折扣存储在变量中
收集您需要的所有信息
最后计算
在必要时通知用户

这是您的脚本示例（带有简短的句子..）：

#!/usr/bin/python3


def cinema():
    age = int(input('Enter age: '))

    if age < 18:
        print('  Too young for this movie.')
        return

    discount = get_discount(age)
    print_discount_message(discount)

    price = 14.95
    discd = calculate_discount_price(price, discount)

    print(f'  Your price: {discd} (original price: {price})')


def get_discount(age):
    if age <= 20:
        discount = 0.1
    elif age >= 65:
        discount = 0.15
    else:
        discount = 0.0

    return discount


def print_discount_message(discount):
    if discount == 0.0:
        print('  Not qualified for discount.')
    else:
        print('  Qualified for discount: {}%'.format(int(discount * 100)))


def calculate_discount_price(original_price, discount):
    return round(original_price - original_price * discount, 2)


if __name__ == '__main__':
    while True:
        cinema()
        more = input('Buy more? (Yes/No): ')
        if more != 'Yes':
            break

示例性输出：

$ python3 cinema.py 
Enter age: 17
  Too young for this movie.
Buy more? (Yes/No): Yes
Enter age: 19
  Qualified for <= 20 discount (10%).
  Your price: 13.45 (original price: 14.95)
Buy more? (Yes/No): Yes
Enter age: 21
  No discount.
  Your price: 14.95 (original price: 14.95)
Buy more? (Yes/No): Yes
Enter age: 66
  Qualified for >= 65 discount (15%).
  Your price: 12.71 (original price: 14.95)
Buy more? (Yes/No): Nah

Answer 2

首先定义一个函数来计算数字的百分比。您可以内联地执行此操作，但是您将需要多次，因此为此使用函数会更好地进行编码：

def percentage(price, pct):
    return (pct * price) /100

然后可以在需要的地方调用此函数，如下所示：

print("You are 65 years or over. You are eligible for a 15% discount. Your ticket price will be", percentage(price, percentageDiscount))

您还必须创建价格变量。

P.S .：您的问题闻起来像作业；）

Answer 3

如果我没看错，我想这就是你想要的：

n = £14.95
x = n / 100
percent = n * x - 100
price = abs(age * percent / 100)

我认为这是正确的，因为您尝试执行的前三行是从数字中获取百分比的计算。

Python的订票程序

3 个答案: