Python面向对象实现一个对象调用另一个对象操作示例

# -*- coding:utf-8 -*-
#! python3
class Cat:
  def __init__(self,new_name,new_age): #初始化对象
    self.name = new_name
    self.age = new_age
  def __str__(self):
    return "%s的年龄是：%d"%(self.name,self.age)
  def eat(self):
    print("猫在吃鱼....")
  def drink(self):
    print("猫在喝可乐...")
tom = Cat("汤姆",40)
print(tom) #这个输出的结果就是str返回值的结果

# -*- coding:utf-8 -*-
#! python3
class Home:
  def __init__(self,new_area,new_info,new_addr):
    self.area = new_area
    self.info = new_info
    self.addr = new_addr
    self.left_area = new_area
    self.contain_items = []
  def __str__(self):
    msg="房子的总面积是：%d,可用面积是：%d,户型是：%s,地址是：%s"%(self.area,self.left_area,self.info,self.addr)
    msg += "当前房子里的物品是%s"%(str(self.contain_items))
    return msg
  def add_item(self,item):
    #self.left_area -= item.area
    #self.contain_items.append(item.name)
    self.left_area -= item.get_area()
    self.contain_items.append(item.get_name())
class Bed:
  def __init__(self,new_name,new_area):
    self.name = new_name
    self.area = new_area
  def __str__(self):
    return "%s占用的面积是：%d"%(self.name,self.area)
  def get_area(self):
    return self.area
  def get_name(self):
    return self.name
fangzi = Home(129,"三室一厅","北京市 朝阳区 长安街 666号")
print(fangzi)
bed1 = Bed("席木思",4)
fangzi.add_item(bed1)
print(fangzi)