在python中使用代码以提高盈利能力

Question

我需要用Python编写一个使用def的程序来计算以折扣价购买客户卡是否有利可图(这意味着折扣+卡价格后的购买成本低于或等于原始成本)，其中有以下论点:以欧元表示的总购买金额、以客户卡计算的折扣百分比和客户卡价格。如果卡为客户节省了一些x欧元，则函数应该返回x。如果购买+卡的价格比最初的购买价格更贵，则返回-x，其中x是欧元的数量，这张卡更便宜。输出应该是这样的:总购买量: 200 %的折扣:5客户卡价格:5最好买张卡，到目前为止我已经写好了这段代码，但是我不知道下一步该做什么：

def customer_card_discount1(total_purchase_amount1, discount_percent1, customer_card_price1):
    new_price = (total_purchase amount1) * (100 - discount_percent1)/100 + 
    (customer_card_price1)
    if new_price <= total_purchase amount1:
    return customer_card_price1 - new_price
    elif new_price > total_purchase amount1:
    return customer_card_price1 - new_price
try:
    total_purchase_amount1 - int(input("Total purchase amount"))
    discount_percent1 - int(input("Discount percent"))
    customer_card_price1 - int(input("Customer card price"))

Answer 1

你可能想得太多了。如果我正确理解了它，你只需要比较原始价格(没有任何折扣)和新价格(原价，加上卡价减去客户折扣)。这导致了一个简单得多的解决方案：

def customer_card_discount1(total_purchase_amount1, discount_percent1, customer_card_price1):
    new_price = (total_purchase_amount1) * (100 - discount_percent1)/100 + customer_card_price1
    return total_purchase_amount1 - new_price

total_purchase_amount1 = int(input("Total purchase amount: "))
discount_percent1 = int(input("Discount percent: "))
customer_card_price1 = int(input("Customer card price: "))

print(customer_card_discount1(total_purchase_amount1, discount_percent1, customer_card_price1))

示例

5

• Input：

• 输入：200 / 5 / 5 ->输出：200 / 5 / 5 200 / 5 / 15 ->输出：-5 (客户卡成本更高)

Answer 2

如果我正确理解了您的问题，下面的简单代码就足够了：

def customer_card_discount1(total_purchase_amount1, discount_percent1, customer_card_price1):
    new_price = (total_purchase_amount1) * (100 - discount_percent1)/100 + (customer_card_price1)
    if new_price <= total_purchase_amount1:
        return ("You save {savings} euro, you should purchase a customer card,".format(savings=total_purchase_amount1 - new_price))
    else:
        return ("Don't buy a card, it would cost you {cost} euro more.".format(cost=total_purchase_amount1 - new_price))

几点意见：

1. 在编写StackOverflow问题时可能是一个错误，但在代码中，total_purchase amount1变量缺少下划线，这会引发错误。应该是total_purchase_amount1.
2. Inside -if语句，您正在返回customer_card_price1和new_price之间的区别，这不是您想要的吗？您希望将总采购价格与新价格进行比较。
3. 也是这样，下次您在StackOverflow上发帖时，请尽量包括您正在收到的任何错误，或者详细说明您所坚持的到底是什么。

Answer 3

def profit(total_purchase,discount_percent,card_price):
    
    discount=discount_percent / 100 * total_purchase
    newpurchase= total_purchase - discount + card_price

    netamount=total_purchase-newpurchase
    # if netamount>0 then there would be benefit in buying card
    if netamount>0:
        print("Profit")
        return netamount

    # if netamount<=0 then there would be no benefit in buying card
    print("Loss")
    return netamount


print(profit(200,5,20))

损耗输出为-10.0