有瑕疵，待改进：

题目描述
总体说明
考生需要模拟实现一个简单的自动售货系统，实现投币、购买商品、退币、查询库存商品及存钱盒信息的功能。
系统初始化时自动售货机中商品为6种商品,商品的单价自定义，存钱盒内放置1元、2元、5元、10元钱币，商品数量和钱币张数通过初始化命令设置。
商品:每种商品包含商品名称、单价、数量三种属性，其中商品名不重复。不能修改商品名称和单价，初始化命令设置商品数量。
 

choice = input("""请输入你需要的业务：
1).购买商品；
2).管理员查询
输入：""")

num_kele = 10
num_pijiu = 10
num_naicha = 10
num_kuangquanshui = 10
num_kafei = 10
num_niunai = 10

shiyuan = 100
wuyuan = 100
liangyuan = 100
yiyuan = 100

while True :
    if choice == '1' :
        print (""" 你好，有如下商品可供你选择：
        1）.可乐       2）.啤酒       3）.奶茶
        4）.矿泉水     5）.咖啡       6）.牛奶
        """)
        choice = input("请输入你要购买商品的序号：")
        if choice == '1' :
            num = int(input("你好，可乐一瓶三元，请输入你要购买的数量："))
            if num <= num_kele :
                print ("你好，一共%s元。" %(num * 3 ))
                money = int(input("请将钞票放入入钞口:"))
                while True :
                    if money == (num * 3):
                        num_kele -= num
                        print("购买成功，欢迎下次光临！")
                        break
                    elif money > (num * 3):
                        num1 = money - (num * 3)
                        for i in range(yiyuan + 1):
                            for j in range(liangyuan + 1):
                                for o in range(wuyuan + 1):
                                    for p in range(shiyuan + 1):
                                        if p * 10 + o * 5 + j * 2 + i * 1 == num1:
                                            print("购买成功，一共找你%s元" %(num1))
                                            shiyuan -= p
                                            wuyuan -= o
                                            liangyuan -= j
                                            yiyuan -= i
                                            exit(0)
                    elif money < (num*3) :
                        money = int(input("请继续投入现金")) + money
            if num > num_kele :
                print ("抱歉，数量不够，请重新输入你要购买的数量！")
        elif choice == '2' :
            num = int(input("你好，啤酒一瓶四元，请输入你要购买的数量："))
            if num <= num_pijiu :
                print ("你好，一共%s元。" %(num * 4 ))
                money = int(input("请将钞票放入入钞口:"))
                if money == (num * 4):
                    num_pijiu -= num
                    print("购买成功，欢迎下次光临！")
                elif money < (num * 4):
                    num = int(input("请继续投入现金：")) + money
                elif money > (num * 4):
                    num1 = money - (num * 4)
                    for i in range(yiyuan + 1):
                        for j in range(liangyuan + 1):
                            for o in range(wuyuan + 1):
                                for p in range(shiyuan + 1):
                                    if p * 10 + o * 5 + j * 2 + i * 1 == num1:
                                        print("购买成功，一共找你%s元" %(num1))
                                        shiyuan -= p
                                        wuyuan -= o
                                        liangyuan -= j
                                        yiyuan -= i
                                        exit(0)

            if num > num_pijiu :
                print ("抱歉，数量不够，请重新输入你要购买的数量！")
        elif choice == '3' :
            num = int(input("你好，奶茶一瓶五元，请输入你要购买的数量："))
            if num <= num_naicha :
                print ("你好，一共%s元。" %(num * 5 ))
                money = int(input("请将钞票放入入钞口:"))
                if money == (num * 5):
                    num_naicha -= num
                    print("购买成功，欢迎下次光临！")
                elif money < (num * 5):
                    num = int(input("请继续投入现金：")) + money
                elif money > (num * 5):
                    num1 = money - (num * 5)
                    for i in range(yiyuan + 1):
                        for j in range(liangyuan + 1):
                            for o in range(wuyuan + 1):
                                for p in range(shiyuan + 1):
                                    if p * 10 + o * 5 + j * 2 + i * 1 == num1:
                                        print("购买成功，一共找你%s元" % (num1))
                                        shiyuan -= p
                                        wuyuan -= o
                                        liangyuan -= j
                                        yiyuan -= i
                                        exit(0)

            if num > num_naicha :
                print ("抱歉，数量不够，请重新输入你要购买的数量！")
        elif choice == '4' :
            num = int(input("你好，矿泉水一瓶两元，请输入你要购买的数量："))
            if num <= num_kuangquanshui :
                print ("你好，一共%s元。" %(num * 2 ))
                money = int(input("请将钞票放入入钞口:"))
                if money == (num * 2):
                    num_kuangquanshui -= num
                    print("购买成功，欢迎下次光临！")
                elif money < (num * 2):
                    num = int(input("请继续投入现金：")) + money
                elif money > (num * 2):
                    num1 = money - (num * 2)
                    for i in range(yiyuan + 1):
                        for j in range(liangyuan + 1):
                            for o in range(wuyuan + 1):
                                for p in range(shiyuan + 1):
                                    if p * 10 + o * 5 + j * 2 + i * 1 == num1:
                                        print("购买成功，一共找你%s元" % (num1))
                                        shiyuan -= p
                                        wuyuan -= o
                                        liangyuan -= j
                                        yiyuan -= i
                                        exit(0)

            if num > num_kuangquanshui :
                print ("抱歉，数量不够，请重新输入你要购买的数量！")
        elif choice == '5' :
            num = int(input("你好，咖啡一瓶六元，请输入你要购买的数量："))
            if num <= num_kafei :
                print ("你好，一共%s元。" %(num * 6 ))
                money = int(input("请将钞票放入入钞口:"))
                if money == (num * 6):
                    num_kafei -= num
                    print("购买成功，欢迎下次光临！")
                elif money < (num * 6):
                    num = int(input("请继续投入现金：")) + money
                elif money > (num * 6):
                    num1 = money - (num * 6)
                    for i in range(yiyuan + 1):
                        for j in range(liangyuan + 1):
                            for o in range(wuyuan + 1):
                                for p in range(shiyuan + 1):
                                    if p * 10 + o * 5 + j * 2 + i * 1 == num1:
                                        print("购买成功，一共找你%s元" % (num1))
                                        shiyuan -= p
                                        wuyuan -= o
                                        liangyuan -= j
                                        yiyuan -= i
                                        exit(0)

            if num > num_kafei :
                print ("抱歉，数量不够，请重新输入你要购买的数量！")
        elif choice == '6' :
            num = int(input("你好，牛奶一瓶五元，请输入你要购买的数量："))
            if num <= num_niunai :
                print ("你好，一共%s元。" %(num * 5 ))
                money = int(input("请将钞票放入入钞口:"))
                if money == (num * 5):
                    num_niunai -= num
                    print("购买成功，欢迎下次光临！")
                elif money < (num * 5):
                    num = int(input("请继续投入现金：")) + money
                elif money > (num * 5):
                    num1 = money - (num * 5)
                    for i in range(yiyuan + 1):
                        for j in range(liangyuan + 1):
                            for o in range(wuyuan + 1):
                                for p in range(shiyuan + 1):
                                    if p * 10 + o * 5 + j * 2 + i * 1 == num1:
                                        print("购买成功，一共找你%s元" % (num1))
                                        shiyuan -= p
                                        wuyuan -= o
                                        liangyuan -= j
                                        yiyuan -= i
                                        exit(0)

            if num > num_niunai :
                print ("抱歉，数量不够，请重新输入你要购买的数量！")
        else :
            print("对不起，没有该商品！请重新输入！")
    if choice == '2' :
        X = input("""请输入你要查询的信息：
    1).商品库存；
    2).存钱盒信息
    3).退出
    请输入你需要的信息：""")
        if X == '1' :
            print ('可乐%s瓶,啤酒%s瓶，奶茶%s瓶，矿泉水%s瓶，咖啡%s瓶，牛奶%s瓶' %(num_kele,num_pijiu,num_naicha,num_kuangquanshui,num_kafei,num_niunai))
        if X == '2' :
            shiyuan = 100
            wuyuan = 100
            liangyuan = 100
            yiyuan = 100
            print ("十元%s张，五元%s张，两元%s张，一元%s张" %(shiyuan,wuyuan,liangyuan,yiyuan))
        if X == '3' :
            break