私有化

 1 class Person(object):
 2     def __init__(self, name, age, taste):
 3         self.name = name
 4         self._age = age 
 5         self.__taste = taste
 6 
 7     def showperson(self):
 8         print(self.name)
 9         print(self._age)
10         print(self.__taste)
11 
12     def dowork(self):
13         self._work()
14         self.__away()
15 
16 
17     def _work(self):
18         print(‘my _work‘)
19 
20     def __away(self):
21         print(‘my __away‘)
22 
23 class Student(Person):
24     def construction(self, name, age, taste):
25         self.name = name
26         self._age = age 
27         self.__taste = taste
28 
29     def showstudent(self):
30         print(self.name)
31         print(self._age)
32         print(self.__taste)
33 
34     @staticmethod
35     def testbug():
36         _Bug.showbug()
37 
38 # 模块内可以访问，当from  cur_module import *时，不导入
39 class _Bug(object):
40     @staticmethod
41     def showbug():
42         print("showbug")
43 
44 s1 = Student(‘jack‘, 25, ‘football‘)
45 s1.showperson()
46 print(‘*‘*20)
47 
48 # 无法访问__taste,导致报错
49 # s1.showstudent() 
50 s1.construction(‘rose‘, 30, ‘basketball‘)
51 s1.showperson()
52 print(‘*‘*20)
53 
54 s1.showstudent()
55 print(‘*‘*20)
56 
57 Student.testbug()