Python：程序错误？ （初级）

Question

我第一次学习python（完全初学者），我必须制作这个程序：

在商店中，产品根据其代码享有折扣：

•代码为45612的产品有10％的折扣

•代码为45613的产品有12％的折扣

•代码为45614的产品有18％的折扣

•代码为45615的产品有20％的折扣

编写一个算法，读取产品的代码（int）和值（浮动）并计算折扣后的价格。

如果您输入的代码不存在，则应打印＆＃34;密码不正确。

但我的节目不起作用，我做错了什么？

这是我的代码：

kodikos = [45612, 45613, 45614, 45615]

password = input("Give code: ")

timi = float(input("Give price: "))



if password == 45612:

     timi = timi - 10
     print("The price after the discount is %f" %(timi))

if password == 45613:

     timi = timi - 12
     print("The price after the discount is %f" %(timi))

if password == 45614:

     timi = timi - 18
     print("The price after the discount is %f" %(timi))

if password == 45615:

     timi = timi - 20
     print("The price after the discount is %f" %(timi))


for n in kodikos:

     if(n != password):
         print("The password doesn't exist!")
         break

Answer 1

您减去固定金额但必须减去相对金额（即该值的10％）。试试这段代码：

kodikos = [45612, 45613, 45614, 45615]

password = input("Give code: ")

timi = float(input("Give price: "))



if password == 45612:

     timi = timi - 0.1 * timi
     print("The price after the discount is %f" %(timi))

if password == 45613:

     timi = timi - 0.12 * timi
     print("The price after the discount is %f" %(timi))

if password == 45614:

     timi = timi - 0.18 * timi
     print("The price after the discount is %f" %(timi))

if password == 45615:

     timi = timi - 0.2 * timi
     print("The price after the discount is %f" %(timi))


for n in kodikos:

     if(n != password):
         print("The password doesn't exist!")
         break