具体代码的实现如下：
1 class People:
2 '这是一个人类'
3
4 def __init__(self,name,age,gener):
5 self.mingzhi=name,
6 self.nianling=age,
7 self.xinbie=gener,
8
9 def run(self,way):
10 print('%s正在%s跑步'%(self.mingzhi,way))
11
12 def sleep(self,wa):
13 print('%s准备%s睡觉了'%(self.xinbie,wa))
14
15 p1=People('林月如',18,'女孩')
16 speak='English'
17
18 p1.run('慢慢的')
19 p1.sleep('躺着')
20
21 People.speak='English'
22 print(People.__dict__)
23 del People.speak
24 print(People.__dict__)
25
26 def tall(self,lan):
27 print('%s talk about %s'%(self.mingzhi,lan))
28 People.realy=tall
29 print(People.__dict__)
30
31 p1.realy('love')
32
33 def eat(self,food):
34 print('%s正在吃%s'%(self.xinbie,food))
35
36 People.realy=eat
37 p1.realy('西餐')
38 print(People.__dict__)
39
40 del People.realy
41 print(People.__dict__)