类的实例1--家具

Posted 2022-07-04 yifengs

 1 class HouseItem():
 2     """家具"""
 3     def __init__(self,name,area):
 4         self.name = name
 5         self.area = area
 6 
 7     def __str__(self):
 8         return ("%s的占地面积：%.2f" % (self.name, self.area))
 9 
10 class House():
11     """新房"""
12 
13     def __init__(self,house_type,area):
14         # 户型
15         self.house_type = house_type
16         # 总面积
17         self.area = area
18         # 剩余面积
19         self.free_area = self.area
20         # 家具名称列表
21         self.item_list = []
22 
23     def __str__(self):
24         return ("户型：%s\n总面积：%.2f[剩余面积：%.2f]\n家具：%s"
25                 % (self.house_type,self.area,self.free_area,self.item_list))
26 
27 
28     def add_item(self,item):
29         if item.area > self.free_area:
30             print("%s的面积太大了 家里放不下了" % item.name)
31             return
32         self.free_area -= item.area
33 
34         self.item_list.append(item.name)
35         # print("添加了：%s,占地面积：%.2f,剩余面积：%.2f" % (item.name,item.area,self.free_area))
36 
37 
38 bed = HouseItem("大床",40)
39 table = HouseItem("餐桌",25)
40 house = House("两室一厅",60)
41 print(bed)
42 house.add_item(bed)
43 house.add_item(table)
44 print(house)

大床的占地面积：40.00
餐桌的面积太大了 家里放不下了
户型：两室一厅
总面积：60.00[剩余面积：20.00]
家具：[‘大床‘]