Python学习日记-9-homework-1-购物车

price = [7500,8000,32,80,1500]
name = ["iphone x","mac book","coffee","book","bike"]
thing = [0,0,0,0,0]

msg_1 = '''
---------------------
1.iphone x   7500
2.mac book   8000
3.coffee      32
4.book        80
5.bike       1500
---------------------
'''
print(msg_1)
salary = int(input("salary:"))
balance = salary

while True:
    a = input("请输入您要购买的商品序号(离开请按[y])：")
    if a == "y" or a == "Y":
        break
    else:
        a = int(a)
        if a > 5 or a < 1:
            print("请输入正确序号")
            continue
        elif balance < price[a-1]:
            print("余额不足",balance-price[a-1])
        else:
            print("已加入 %s 到购物车"%name[a-1])
            balance -= price[a-1]
            print("当前余额：",balance)
            thing[a-1] += 1


print("您已购买如下产品：")
for i in range(5):
    if thing[i] >= 1:
        print("%s * %d    %d"%(name[i],thing[i],thing[i]*price[i]))
else:
    print("您的余额为：",balance)

#-----------改进版-------------------

product = [
    ("iphone x",7500),
    ("mac book",8000),
    ("coffee",32),
    ("book",80),
    ("bike",1500)
]

thing = [0,0,0,0,0]

msg_1 = '''
---------------------
1.iphone x   7500
2.mac book   8000
3.coffee      32
4.book        80
5.bike       1500
---------------------
'''
print(msg_1)
salary = int(input("salary:"))
balance = salary

while True:
    a = input("请输入您要购买的商品序号(离开请按[y])：")
    if a == "y" or a == "Y":
        break
    elif a.isdigit():
        a = int(a)
        if a > 5 or a < 1:
            print("请输入正确序号!!!")
            continue
        elif balance < product[a-1][1]:
            print("余额不足",balance-product[a-1][1])
        else:
            print("已加入 %s 到购物车" % product[a-1][0])
            balance -= product[a-1][1]
            print("当前余额：", balance)
            thing[a-1] += 1
    else:
        print("请输入正确序号!!!")


print("您已购买如下产品：")
for i in range(5):
    if thing[i] >= 1:
        print("%s * %d    %d"%(product[i][0],thing[i],product[i][1]))
else:
    print("您的余额为：",balance)