python多继承

 1 # class People:  #经典类
 2 class People(object):  #新式类
 3     def __init__(self,name,age):
 4         self.name=name
 5         self.age=age
 6         self.friends=[]
 7     def eat(self):
 8         print("%s is eating." % self.name)
 9     def sleep(self):
10         print("%s is sleeping." % self.name)
11 class Relation(object):
12     def make_friends(self,obj):
13         print(‘%s is making friends with %s‘ %(self.name,obj.name))
14         self.friends.append(obj)
15         obj.friends.append(self)
16 
17 class Man(People,Relation):    #多继承，继承顺序从左到右
18     def __init__(self,name,age,money):
19         # People.__init__(self,name,age)
20         super(Man, self).__init__(name,age)    #新式类写法
21         self.property=money
22         print(‘%s has %s yuan when he was born‘%(self.name,self.property))
23     def sleep(self):    #重构
24         #People.sleep(self)    #继承父类
25         super(Man,self).sleep()
26         print(‘%s is dahaning‘ %  self.name)
27 class Woman(Relation,People): 

28 #多继承（构造函数只需要一个），继承顺序从左到右，\ 
29 #第一个父类有构造函数，就不会执行第二个父类的构造函数；如果第一个父类没有构造函数，就去第二个父类中找 

30 pass 

1 m1=Man(‘alex‘,33,10)
2 w1=Woman(‘May‘,35)
3 
4 m1.make_friends(w1)
5 print(m1.friends[0].name)
6 print(w1.friends[0].name)