Python餐厅管理系统（控制台版本）

# 客户的点餐字典
dict_myMenu = {}
# 商家的菜单
dict_Menu = {'美味蟹堡': {'Price': 12, 'Count': 12}, '三明治': {'Price': 18, 'Count': 52}, '趣霸堡': {'Price': 14, 'Count': 22}}
# 中间容器
dict_add_Menu = {}
# 存储用户账号密码的字典
dict_account = {}
# 商家账号密码登录
Id = 'xbw123'  # 账号
password = '123'  # 密码

while True:
    # 欢迎语
    print('欢迎登船享受蟹堡王的美食')
    # 先打印一遍菜单
    print(f'请看菜单：{dict_Menu}')
    # 打印可以进行的操作
    while True:
        identity = input('请输入您的身份(输入数字)：\n 1.商家\n 2.用户\n')
        if identity == '1':
            G_Id = str(input('请输入账号：'))
            G_password = str(input('请输入密码：'))
            if G_Id == Id and G_password == password:
                while True:
                    print('欢迎回来，祝你能有开心的一天')
                    choose_merchant = input('请选择操作：\n 1.添加菜品到菜单表 \n 2.删除菜单表中的菜品\n 3.修改菜品数据\n 4.回到主菜单\n')
                    if choose_merchant == '1':
                        add_menu()
                    elif choose_merchant == '2':
                        delete_menu()
                    elif choose_merchant == '3':
                        update_menu()
                    elif choose_merchant == '4':
                        break
                    else:
                        print('请输入正确的选项')
                else:
                    print('账号或密码错误，返回主界面')
        elif identity == '2':
            while True:
                choose_client = input(
                    '尊敬的用户，请选择操作：\n 1.添加菜品到我的订单+\n 2.从我的订单删除菜品-\n 3.查询我的订单\n 4.返回主菜单\n 5.结算 ')
                if choose_client == '1':
                    add_goods()
                elif choose_client == '2':
                    delete_goods()
                elif choose_client == '3':
                    find_goods()
                elif choose_client == '4':
                    # 退出程序，清空个人订单
                    dict_myMenu.clear()
                    break
                elif choose_client == '5':
                    buy()
                else:
                    print('您的输入有误')
                    continue
        else:
            print('请输入数字进行身份选择哦')

"""
函数定义(商家使用)
"""
def add_menu():
    global dict_Menu
    global dict_add_Menu
    """商家进货"""
    goods_name = input('请输入菜品的名称')
    goods_count = int(input('请输入要添加的数量'))
    if goods_name in dict_Menu:
        dict_Menu[goods_name]['Count'] += goods_count
        print('添加成功')
        # save_data()
    else:
        print('您输入的菜品名称不在菜单中，即将生成新的菜单菜品')
        goods_price = float(input('请输入商品的价格'))
        # 把商品添加到菜单中
        dict_add_Menu = {goods_name: {'Price': goods_price, 'Count': goods_count}}
        dict_Menu.update(dict_add_Menu)
        print('添加成功')
        # save_data()
def delete_menu():
    """商家删除菜单菜品"""
    global dict_Menu
    print(dict_Menu)  # 删除前打印所有菜品
    dict_name = input('请输入要删除的菜品名称')
    if dict_name in dict_Menu:
        """删除前提示是否删除"""
        boolean = input('确定要删除吗？（Yes/No）')
        if boolean == 'Yes':
            del dict_Menu[dict_name]
            # save_data()
        elif boolean == 'No':
            print('您选择了取消操作')
            # 打印菜单
            print(dict_Menu)
        else:
            print('您的输入有误，请重新输入')
    else:
        print('您输入的菜品名称不在菜单中，请重新输入')
def update_menu():
    """商家修改菜单"""
    global dict_Menu
    print(dict_Menu)
    update = input('请输入要修改的数据：\n 1.修改名称\n 2.修改价格')
    try:
        update = int(update)
    except:
        print('输入的不是数字')
    if update == 1:
        front_name = input('请输入要修改的名称')
        if front_name in dict_Menu:
            back_name = input('请输入修改后的名称')
            # dict_Menu[front_name] = dict_Menu[back_name]
            dict_Menu = eval(str(dict_Menu).replace(front_name, back_name))
            # save_data()
            print('修改成功')
        else:
            print('该商品不存在')
    elif update == 2:
        goods_name = input('请输入要修改价格的菜品名称')
        if goods_name in dict_Menu:
            goods_price = float(input('请输入修改后的价格'))
            dict_Menu.update({goods_name['Price':goods_price]})
            # save_data()
        else:
            print('该商品不存在')
    else:
        print('请输入正确的选项')

"""
函数定义(客户使用)
"""
def add_goods():
    """客户点菜"""
    print(f'菜单{dict_Menu}')
    global dict_myMenu
    goods_name = input('请输入要添加的菜品名称')
    goods_count = int(input('请输入要添加菜品数量'))
    if goods_name not in dict_Menu:
        print('该餐品不存在哦，请重新选择')
    else:
        if dict_Menu[goods_name]['Count'] >= goods_count:
            # 库存菜品减少
            dict_Menu[goods_name]['Count'] -= goods_count
            # 自动计算价格及数量
            try:
                num = dict_myMenu[goods_name]['Count']
                num += goods_count
                price = dict_myMenu[goods_name]['Price']
                price = dict_Menu[goods_name]['Price'] * num
            except:
                num = goods_count
                price = dict_Menu[goods_name]['Price'] * num
            dict_myMenu[goods_name] = {'Price': price, 'Count': num}
            # 添加菜品到个人订单中
            print(f'您的菜品{dict_myMenu}')
def delete_goods():
    """客户删除点餐字典数据"""
    global dict_myMenu
    # read()
    print(dict_myMenu)  # 删除之前先打印自己的点餐字典
    goods_name = input('请输入要删除的菜品的名称')
    if goods_name not in dict_Menu:
        print('该餐品不在你的点餐表中哦，请重新选择')
    else:
        good_count = int(input('请输入要删除的数量'))
        if dict_myMenu[goods_name]['Count'] >= good_count:
            dict_myMenu[goods_name]['Count'] -= good_count
            if dict_myMenu[goods_name]['Count'] == 0:
                del dict_myMenu[goods_name]
            # 用户取消菜品，商家该菜品增加
            dict_Menu[goods_name]['Count'] += good_count
            print(f'您的菜品{dict_myMenu}')
            # save_data1()
        else:
            print('您输入的删除的菜单菜品数量有误，请重新输入')
def buy():
    """结算"""
    global dict_myMenu
    if dict_myMenu == {}:
        print('您的订单中没有数据')
    else:
        print(f'您的订单{dict_myMenu}')
        dict_myMenu.clear()
        # save_data1()
        print(f'结算成功,您的点菜单剩余{dict_myMenu}')
def find_goods():
    """客户查询个人菜品菜单"""
    print(dict_myMenu)