Add 餐厅点餐系统

餐厅点餐系统

@@ -0,0 +1,185 @@
+class Restaurant:
+    def __init__(self):
+        self.customers = []  # 所有顾客信息列表
+        self.items = {  # 所有菜品和价格字典
+            '炒饭': 10,
+            '炒面': 12,
+            '炒鸡蛋': 5,
+            '牛肉面': 15,
+            '汉堡': 18,
+            '可乐': 3,
+            '雪碧': 3,
+            '果汁': 5
+        }
+
+    def register(self):
+        name = input('请输入用户名: ')
+        password = input('请设置密码: ')
+
+        for customer in self.customers:
+            if customer['name'] == name:
+                print('该用户名已被注册')
+                return
+
+        self.customers.append({
+            'name': name,
+            'password': password,
+            'cart': {}  # 购物车初始化为空字典
+        })
+
+        print('注册成功！')
+
+    def login(self):
+        name = input('请输入用户名: ')
+        password = input('请输入密码: ')
+
+        for customer in self.customers:
+            if customer['name'] == name and customer['password'] == password:
+                print('登录成功！')
+                self.current_user = customer
+                return
+
+        print('用户名或密码错误！')
+
+    def show_menu(self):
+        print('-' * 40)
+        print('{:<20}{:<10}'.format('菜品', '价格'))
+        print('-' * 40)
+
+        for item, price in self.items.items():
+            print('{:<20}{:<10}'.format(item, price))
+
+        print('-' * 40)
+
+    def add_to_cart(self):
+        if not hasattr(self, 'current_user'):
+            print('您还未登录，登录后才能选择菜品！')
+            return
+
+        item_name = input('请输入要加入购物车的菜品名称: ')
+        item_price = self.items.get(item_name)
+
+        if not item_price:
+            print('抱歉，我们没有这道菜!')
+            return
+
+        while True:
+            item_quantity = input('请输入添加到购物车的数量: ')
+
+            if not item_quantity.isdigit() or int(item_quantity) <= 0:
+                print('输入有误，请输入一个正整数！')
+            else:
+                item_quantity = int(item_quantity)
+                break
+
+        cart = self.current_user['cart']
+
+        if item_name in cart:
+            cart[item_name] += item_quantity
+        else:
+            cart[item_name] = item_quantity
+
+        print('{0} x {1} 已经添加到购物车!'.format(item_name, item_quantity))
+
+    def show_cart(self):
+        if not hasattr(self, 'current_user'):
+            print('您还未登录，登录后才能查看购物车！')
+            return
+
+        cart = self.current_user['cart']
+
+        if not cart:
+            print('购物车为空！')
+            return
+
+        print('-' * 20)
+        print('{:<10}{:<10}'.format('菜品', '数量'))
+        print('-' * 20)
+
+        for item, quantity in cart.items():
+            print('{:<10}{:<10}'.format(item, quantity))
+
+        print('-' * 20)
+
+    def remove_from_cart(self):
+        if not hasattr(self, 'current_user'):
+            print('您还未登录，登录后才能删除购物车中的菜品！')
+            return
+
+        cart = self.current_user['cart']
+
+        if not cart:
+            print('购物车为空！')
+            return
+
+        item_name = input('请输入要删除的菜品名称: ')
+
+        if item_name not in cart:
+            print('购物车中没有这道菜！')
+            return
+
+        del cart[item_name]
+        print('{0} 已经从购物车中移除！'.format(item_name))
+
+    def checkout(self):
+        if not hasattr(self, 'current_user'):
+            print('您还未登录，登录后才能进行结算！')
+            return
+
+        cart = self.current_user['cart']
+
+        if not cart:
+            print('您还没选择任何菜品！')
+            return
+
+        total_price = 0
+
+        for item, quantity in cart.items():
+            item_price = self.items.get(item)
+            total_price += item_price * quantity
+
+        print('-' * 20)
+        print('您的订单总价格为: {}'.format(total_price))
+        print('-' * 20)
+
+        # 结算完成后清空购物车
+        self.current_user['cart'] = {}
+
+    def run(self):
+        while True:
+            print('1.客户注册')
+            print('2.客户登录')
+            print('3.查看菜单')
+            print('4.添加菜品到购物车')
+            print('5.查看购物车')
+            print('6.删除购物车中的菜品')
+            print('7.进行结算')
+            print('8.退出')
+
+            choice = input('请选择操作(输入数字): ')
+
+            if choice == '1':
+                self.register()
+            elif choice == '2':
+                self.login()
+            elif choice == '3':
+                self.show_menu()
+            elif choice == '4':
+                self.add_to_cart()
+            elif choice == '5':
+                self.show_cart()
+            elif choice == '6':
+                self.remove_from_cart()
+            elif choice == '7':
+                self.checkout()
+            elif choice == '8':
+                break
+            else:
+                print('无效的选择，请重新输入！')
+
+
+if __name__ == '__main__':
+    restaurant = Restaurant()
+    restaurant.run()
+
+