Python 面向对象的小例子

 1 #!/usr/bin/python
 2 # -*- coding: UTF-8 -*-
 3 # added by kangye python27
 4 
 5 class Person:
 6     "人的基本类型"
 7     # 申明类属性
 8     name = ""
 9     age  = 0
10     # 私有属性
11     __sex = "man"
12 
13     # 构造方法
14     def __init__(self, name, age , sex="man"):
15         self.name = name
16         self.age  = age
17         self.__sex = sex
18 
19     def display(self):
20         self.__ageCount(3)
21         print "this man name is %s , and age is %d , and sex is %s"%(self.name, self.age, self.__sex)
22         return self
23 
24     def getAge(self):
25         return self.age
26 
27     def getSex(self):
28         return self.__sex
29 
30     # 私有方法
31     def __ageCount(self, i):
32         self.age += i
33 
34 class Man(Person):
35     "男人"
36 
37     power = 10
38 
39     def __init__(self, power, name):
40         self.power = power
41         self.name  = name
42 
43     # 方法覆盖
44     def display(self):
45         print "the name is %s, the age is %d"%(self.name, self.age)
46         return self
47 
48     def getAge(self):
49         print "调用子类"
50         self.age += 7
51         return self.age
52 
53 if __name__ == "__main__":
54 
55     persona = Person("kangye",12)
56     print persona.name
57 
58     # 链式编程
59     print persona.display().getAge()
60     print persona.getSex()
61 
62     personb = Person("kangye",12,"handsome boy!")
63     personb.display()
64 
65     mana = Man(100, "kevin !")
66     print mana.age
67     print mana.display().getAge()