面向对象封装案例1-摆放家居

class HouseItem:
    def __init__(self,name,area):
        self.name=name
        self.area=area

    def __str__(self):
        return "[%s] 占地:%.2f"%(self.name,self.area)

class House:
    def __init__(self,house_type,area):
        self.house=house_type
        self.area=area
        self.free_area=area
        self.item_list=[]
    def __str__(self):
        return ("户型：%s\n总面积：%.2f[剩余：%.2f]\n家具：%s"
                %(self.house,self.area,self.free_area,self.item_list))

    def add_item(self,item):
        print("要添加 %s"%item)
        if item.area > self.free_area:
            print("%s 的面积太大了，无法添加"%item.name)
            return
        self.item_list.append(item.name)
        self.free_area -= item.area

bed=HouseItem("席梦思",4)
chest=HouseItem("衣柜",2)
table=HouseItem("桌子",1.5)
print(bed)
print(chest)
print(table)

my_home=House("两室一厅",60)

my_home.add_item(bed)
my_home.add_item(chest)
my_home.add_item(table)
print(my_home)