Python之路-基本数据类型

exit_flag = True                                 #退出的标志位
for i in range(3):
    if exit_flag == True:
        print(‘i---->‘,i)
        for j in range(3):
            if  exit_flag == True:
                print(‘j--->‘,j)
                for k in range(3):
                    print(‘k--->‘,k)
                    if k==1:
                        exit_flag = False
                        break
            else:
                break
    else:
        break
print(‘last line!‘)

money = int(input("请输入你有多少元："))
goods = [‘iphone‘, ‘coffee‘,‘book‘,‘shirt‘,‘chocolate‘]             #商品列表
price = [ 5800,300,500,1000,50]                                     #商品单价
buy_num = [0,0,0,0,0]                                               #加入购物车每一种商品的个数
total = 0                                                           #加入购物车一共有几件，作为是否有够买商品的判断
exit_flag = True                                                   #退出标志位
remain_money = money                                                #剩余的钱
print("我们商店有以下的商品：")
for i in range(goods.__len__()):                                    #打印商品列表
    print(i,goods[i],price[i])

while exit_flag == True:
    number = int(input("请输入你想买的商品标号："))
    if number >= goods.__len__():
        choice = input("商品不存在，退出？(y,n)")
        if choice == "y":
            exit_flag = False
    else:
        count = int(input("请输入你想买几件："))
        buy_num[number] +=count                                     #在buy_num中到对应位置存下购买商品个数
        remain_money = remain_money - price[number]*count           #扣钱
        if remain_money >= 0:
            print("你还有",remain_money,"元")
            choice = input("退出？(y,n)")
            if choice == "y":
                exit_flag = False
        else:
            print("钱不够了！！！")
            remain_money = remain_money + price[number]*count       #没有购买成功，操作前的钱和购买数量
            buy_num[number] -=count                                 #没有购买成功，操作前的钱和购买数量
            print("你还有",remain_money,"元","你选择的商品需要花费",price[number]*count,"元")
            choice = input("退出？(y,n)")
            if choice == "y":
                exit_flag = False

for i in range(buy_num.__len__()):
    total += buy_num[i]

if total == 0:
    print("你没有购买任何商品")
else:
    print("------------------------------购物清单---------------------------------")
    print("你购买了以下商品：")
    for i in range(buy_num.__len__()):
        if buy_num[i] > 0:
            print(goods[i],‘----‘,buy_num[i],‘个‘)
print(‘你还有‘,remain_money,‘元‘)