多态练习

• 练习

  ---

  '''
  1）.房子类 有户型，总面积和家具名称列表[]
        新房子没有任何的家具
       def __init__(self,hx,area):
          self.hx=hx
          self.area= area
          self.lists=[]
      添加家具
      add_furniture(self,furniture):
      
      展示方法：show(self)
      户型
      剩余
      放了哪些家具
          
  2) .家具类 有名字和占地面积属性，
      class Furniture:
          ....
          
      class Bed(Furniture):
          ....
          
      class Desk(Furniture):
         ....
      ...
     创建家具对象：
      		床：占4平米
      		衣柜：占2平面
      		餐桌：占1.5平米
  3）.将以上三件家具添加到房子中
  4）.打印房子时，要求输出:户型，总面积，剩余面积，家具名称列表
  
  '''
  

  ---

  class House:
      def __init__(self, hx, area):
          self.hx = hx
          self.area = area
          self.lists = []
  
      # 添加家具
      def add_furniture(self, furniture):  # furniture = table
          if isinstance(furniture, Furniture):
              # 添加到家具列表
              self.lists.append(furniture)
              # 从总面积减去家具的面积
              self.area -= furniture.area
              print('添新家具了')
          else:
              print('不能随便往家里搬哦！')
  
      # 展示
      def show(self):
          print('户型:', self.hx)
          print('剩余面积:', self.area)
          print('家具如下:')
          for f in self.lists:
              print(f)
  
  
  class Furniture:
      def __init__(self, name, area):
          self.name = name
          self.area = area
  
      def __str__(self):
          return self.name + '占用面积:' + str(self.area)
  
  
  class Bed(Furniture):
      pass
  
  
  class Table(Furniture):
      pass
  
  
  class Robe(Furniture):
      pass
  
  
  bed = Bed('床', 4)
  
  table = Table('桌子', 1.5)
  
  robe = Robe('衣柜', 12)
  
  
  house = House('2室一厅', 88)
  
  house.add_furniture(bed)
  house.add_furniture(table)
  house.add_furniture(robe)
  
  house.show()