Python 练习：简单的购物车

salary = int(input("Please input your salary: "))
msg = '''
1. iphone6s 5800
2. mac book 9000
3. coffee   32
4. python book 80
5. bicyle   1500
6. exit
'''

cart = []
flag = True

while flag:
    print(msg)
    tmp = int(input("what do you want to buy?"))
    if tmp == 1 and salary >= 5800:
        cart.append("iphone6s")
        salary = salary - 5800
        print("your balance is still has %d" %salary)
    elif tmp == 2 and salary >= 9000:
        cart.append("mac book")
        salary = salary - 9000
        print("your balance is still has %d" %salary)
    elif tmp == 3 and salary >= 32:
        cart.append("coffee")
        salary = salary - 32
        print("your balance is still has %d" %salary)
    elif tmp == 4 and salary >= 80:
        cart.append("python book")
        salary = salary - 80
        print("your balance is still has %d" %salary)
    elif tmp == 5 and salary >= 1500:
        cart.append("bicyle")
        salary = salary - 1500
        print("your balance is still has %d" %salary)
    elif tmp == 6:
        flag = False
    else:
        print("You don't have enough money")
else:
    print("Your shopping cart has", cart)