ADD file via upload

点餐系统 王欣怡.py

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+menus = [
+    {"m_name": "鱼香肉丝", "m_money": 33, "m_goods": 0, "m_number": 10},
+    {"m_name": "麻婆豆腐", "m_money": 11, "m_goods": 0, "m_number": 10},
+    {"m_name": "水煮肉片", "m_money": 66, "m_goods": 0, "m_number": 10},
+]
+menus_car =[]
+orders =[]
+
+# 2.点击我要点菜，显示所有菜品信息及编号。
+while True:
+    print("----------点餐系统----------")
+    print("1.我要点餐")
+    print("2.我要结账")
+    print("3.我要点赞")
+    print("4.退出系统")
+    print("请选择编号：",end="")
+    num1 = int(input())
+    if num1 ==1:
+        while True:
+            menu_no = 1
+            print(" ")
+            print("----------点餐界面----------")
+            print("菜单编号\t\t菜单名称\t\t单价\t\t点赞数\t\t剩余库存")
+            for menu in menus:
+                print("{0}\t\t{1}\t\t{2}\t\t{3}\t\t{4}\t\t".format(
+                    menu_no,
+                    menu.get("m_name"),
+                    menu.get("m_money"),
+                    menu.get("m_goods"),
+                    menu.get("m_number")
+                ))
+                menu_no += 1
+                # 3.用户选择编号，将菜品添加到购物车，并扣除菜品信息中的分数。
+            print("请选择菜品编号(0返回首页)： ",end="")
+            user_menu_no = int(input()) #用户输入菜品编号
+            if user_menu_no==0:
+                break
+            print("请输入购买份数：", end="")
+            user_menu_number = int(input())
+            # 计算菜品总价
+            user_menu_money = menus[user_menu_no-1].get("m_money") * user_menu_number
+
+           #1.获得菜品信息
+            new_menus = menus[user_menu_no - 1]  #将点菜信息赋值给新的变量
+            new_menus.update({"user_menu_number":user_menu_number})
+            new_menus.update({"user_menu_money":user_menu_money})
+           #2.放入购物车
+            menus_car.append(new_menus)
+
+
+    elif num1 ==2:
+        print(" ")
+        print("----------结账界面----------")
+        print("菜单名称\t\t单价\t\t份数\t\t总价")
+        goodsum = 0;
+        for menucar in menus_car:
+            goodsum += menucar.get("user_menu_money")
+            print("{0}\t\t{1}\t\t{2}\t\t{3}".format(
+                menucar.get("m_name"),
+                menucar.get("m_money"),
+                menucar.get("user_menu_number"),
+                menucar.get("user_menu_money")
+            ))
+        print("购物车合计：",goodsum)
+
+
+        while True:
+            print("请输入金额：",end="")
+            user_money = float(input())
+            if goodsum > user_money:
+                print("余额不足，请重新输入。")
+            else:
+                print("实付%f，找零%f"%(user_money,(user_money-goodsum)))
+                #减库存
+                for menucar1 in menus_car: #循环购物车中的菜品
+                    for menu2 in menus: #循环菜单中的菜品
+                        #获得购物车菜品名称 并 比较菜单中的菜品名称 查找是否存在
+                        if menucar1.get("m_name") == menu2.get("m_name"):
+                            #更新当前菜品信息中的 库存量  当前库存-购买份数
+                            menu2.update({"m_number":menu2.get("m_number")-menucar1.get("user_menu_number")})
+
+                orders = menus_car.copy()
+                menus_car.clear()
+                break
+
+
+    elif num1 ==3:
+        while True:
+            print(" ")
+            print("----------点赞界面----------")
+            print("菜单名称\t\t单价\t\t份数\t\t总价\t\t点赞数")
+
+            for order in orders:
+                print("{0}\t\t{1}\t\t{2}\t\t{3}\t\t{4}".format(
+
+                    order.get("m_name"),
+                    order.get("m_money"),
+                    order.get("user_menu_number"),
+                    order.get("user_menu_money"),
+                    order.get("m_goods"),
+                ))
+
+            m_goods_numbers = int(input("请输入点赞数(按0退出)："))
+            for goods_numbers in orders:  # 循环订单中的菜名
+                for goods_numbers_1 in menus:  # 循环菜单中的菜名
+                    if goods_numbers.get("m_name") == goods_numbers_1.get("m_name"):
+                        goods_numbers_1.update({"m_goods": goods_numbers_1.get("m_goods")+ m_goods_numbers})
+            if m_goods_numbers == 0:
+                break
+
+    elif num1 ==4:
+        print(" ")
+        print("----------退出系统----------")
+        break