关于在python类的方法中 实例化其他的类

 1 class F1:
 2     def __init__(self):
 3         self.gender = 8
 4         print(self.gender)
 5         self.f3()
 6     def f3(self):
 7         self.age = 14
 8         self.name = ‘wu‘
 9         print(‘我是F1的‘)
10 class F3(F1):
11     def f3(self):
12         print(‘我是F3的！！‘)
13 class F2():
14     def __init__(self,classname):
15         self.classname = classname
16     def f1(self):
17         self.classname()
18     def f2(self):
19         print(‘我是F2的！‘)
20 
21 obj = F2(F3)
22 obj.f1()

1 8
2 我是F3的！！

 1 class F1:
 2     def __init__(self):
 3         print(‘2‘,self)
 4         self.f3()
 5     def f3(self):
 6         self.age = 14
 7         self.name = ‘wu‘
 8         print(‘我是F1的‘)
 9 
10 class F2(F1):
11     def __init__(self,classname):
12         print(‘实例化F1‘)
13         self.classname = classname
14     def f1(self):
15         self.classname()
16         print(‘1‘,self)
17     def f3(self):
18         print(‘我是F2的！‘)
19 
20 
21 
22 obj = F2(F1)
23 obj.f1()

1 实例化F1
2 2 <__main__.F1 object at 0x0000005753B493C8>
3 我是F1的
4 1 <__main__.F2 object at 0x0000005753B49320>