python 商品管理系统01

 goods = [{"商品名": "苹果", "价格": "12"}, {"商品名": "香蕉", "价格": "2"}]

    
 print("*" * 20)
    
 print("商品管理系统")
    
 print("1.增加商品的信息")
    
 print("2.删除商品的信息")
    
 print("3.修改商品的信息")
    
 print("4.查看商品的信息")
    
 print("5.退出商品管理系统")
    
 print("*" * 20)
    
  
    
 while True:
    
     select = input("请输入功能号:")
    
  
    
     if select == "1":
    
     tem_goods = {}
    
     name = input("请输入商品名")
    
     price = input("请输入价格")
    
     tem_goods["商品名"] = name
    
     tem_goods["价格"] = price
    
     goods.append(tem_goods)
    
  
    
     elif select == "2":
    
     if len(goods) != 0:
    
         goods_name = input("请输入要删除的商品名：")
    
         for i in goods:
    
             if goods_name in i.values():
    
                 goods.remove(i)
    
                 print(goods)
    
                 print("删除成功")
    
                 break
    
         else:
    
             print("没有该商品！！")
    
  
    
     elif select == "3":
    
     if len(goods) != 0:
    
         goods_name = input("请输入要修改的商品名：")
    
         list1 = []
    
         for i in goods:
    
             list1.append(i["商品名"])
    
         if goods_name in list1:
    
             index1 = list1.index(goods_name)
    
             goods.remove(goods[index1])
    
             qq = input("请输入商品名：")
    
             ww = input("请输入价格：")
    
             goods.append({"商品名": qq, "价格": ww})
    
             print(goods)
    
             print("修改成功")
    
         else:
    
             print("没有该商品")
    
  
    
     elif select == "4":
    
     for i in goods:
    
         print(i)
    
     elif select == "5":
    
     print("欢迎使用")
    
     break