题解 | #自动售货系统#python3#类版本

class GoodSystem():

    # 商品名称
    goods_names = ['A1', 'A2', 'A3', 'A4', 'A5', 'A6']
    # 商品价格
    goods_price = [2, 3, 4, 5, 8, 6]
    # 每种商品的数量
    goods_nums = []
    # 币额
    money_flag = [1, 2, 5, 10]
    # 每种币值的张数
    money_nums = []
    # 投币余额
    balance = 0
    
    def __init__(self, param1, param2):
        """
        初始化商品数量和每种面额的张数
        """
        self.goods_nums = list(map(int, param1.split('-')))
        self.money_nums = list(map(int, param2.split('-')))
        print('S001:Initialization is successful')
        
    def put_money(self, money):
        # 投币
        if money not in [1, 2, 5, 10]:
            print('E002:Denomination error')
        elif money in [5, 10] and money > self.money_nums[0] + self.money_nums[1] * 2:
            print('E003:Change is not enough, pay fail')
        elif sum(self.goods_nums) == 0:
            print('E005:All the goods sold out')
        else:
            self.balance += money
            self.money_nums[self.money_flag.index(money)] += 1
            print('S002:Pay success,balance=%d' % self.balance)
            
    def buy_goods(self, name):
        # 购买商品
        if name not in self.goods_names:
            print('E006:Goods does not exist')
        elif self.goods_nums[self.goods_names.index(name)] == 0:
            print('E007:The goods sold out')
        elif self.balance < self.goods_price[self.goods_names.index(name)]:
            print('E008:Lack of balance')
        else:
            self.balance -= self.goods_price[self.goods_names.index(name)]
            self.goods_nums[self.goods_names.index(name)] -= 1
            print('S003:Buy success,balance=%d' % self.balance)
            
    def out_money(self):
        # 存钱盒总额
        total_money = self.money_nums[0] + self.money_nums[1] * 2 + self.money_nums[2] * 5 + self.money_nums[3] * 10
        # 每个币额退的数量
        out_count = [0, 0, 0, 0]
        if self.balance == 0:
            print('E009:Work failure')
        elif self.balance >= total_money:
            print('1 yuan coin number=%d' % self.money_nums[0])
            print('2 yuan coin number=%d' % self.money_nums[1])
            print('5 yuan coin number=%d' % self.money_nums[2])
            print('10 yuan coin number=%d' % self.money_nums[3])
        else:
            if self.balance >= self.money_nums[3] * 10:
                self.balance -= self.money_nums[3] * 10
                self.money_nums[3] = 0
                out_count[3] = self.money_nums[3]
            else:
                self.money_nums[3] -= self.balance // 10
                out_count[3] = self.balance // 10
                self.balance -= self.balance // 10 * 10
            if self.balance >= self.money_nums[2] * 5:
                self.balance -= self.money_nums[2] * 5
                self.money_nums[2] = 0
                out_count[2] = self.money_nums[2]
            else:
                self.money_nums[2] -= self.balance // 5
                out_count[2] = self.balance // 5
                self.balance -= self.balance // 5 * 5
            if self.balance >= self.money_nums[1] * 2:
                self.balance -= self.money_nums[1] * 2
                self.money_nums[1] = 0
                out_count[1] = self.money_nums[1]
            else:
                self.money_nums[1] -= self.balance // 2
                out_count[1] = self.balance // 2
                self.balance -= self.balance // 2 * 2
                self.money_nums[0] -= self.balance
            out_count[0] = self.balance
            self.balance = 0
            print('1 yuan coin number=%d' % out_count[0])
            print('2 yuan coin number=%d' % out_count[1])
            print('5 yuan coin number=%d' % out_count[2])
            print('10 yuan coin number=%d' % out_count[3])
            
    def query(self, command):
        # 查询功能
        order_list = command.split()
        if len(order_list) == 2 and order_list[1] == '0':
            goods_list = [[0 for i in range(3)] for j in range(6)]
            for i in range(3):
                goods_list[i][0] = self.goods_names[i]
                goods_list[i][1] = self.goods_price[i]
                goods_list[i][2] = self.goods_nums[i]
            goods_list.sort(key=lambda x: x[2])
            for i in range(3):
                print(' '.join(map(str, goods_list[i])))
        elif len(order_list) == 2 and order_list[1] == '1':
            print('1 yuan coin number=%d' % self.money_nums[0])
            print('2 yuan coin number=%d' % self.money_nums[1])
            print('5 yuan coin number=%d' % self.money_nums[2])
            print('10 yuan coin number=%d' % self.money_nums[3])
        else:
            print('E010:Parameter error')
            
if __name__ == '__main__':

    while True:
        
        try:
            command_list = input().split(';')[:-1]
            for command in command_list:
                if command[0] == 'r':
                    goods_system = GoodSystem(command.split()[1], command.split()[2])
                elif command[0] == 'p':
                    goods_system.put_money(int(command.split()[1]))
                elif command[0] == 'b':
                    goods_system.buy_goods(command.split()[1])
                elif command[0] == 'q':
                    goods_system.query(command.split()[0])
                elif command[0] == 'c':
                    goods_system.out_money()
            
        except:
            break