Python面向对象-学习笔记

1 class Student():
2     name = ‘lemon‘
3 
4 print(Student.__dict__)
5 print(Student.name)
6 Student.name = ‘lemon-Xu‘
7 print(Student.name)

 1 class Student():
 2     name = ‘lemon‘
 3 
 4     def say(self,name):
 5         self.name = name
 6         print(self.name)
 7 
 8 
 9 a = Student()
10 
11 a.say(‘lemon-Xu‘)
12 
13 Student.say(Student,‘lemon-X‘)

 1 class Student():
 2     name = ‘lemon‘
 3 
 4     def __init__(self,name):
 5         self.name = name
 6 
 7 
 8 a = Student(‘lemon-Xu‘)
 9 b = Student(‘lemon-a‘)
10 
11 print(a.__dict__)
12 print(b.__dict__)
13 print(Student.__dict__)

 1 class Student():
 2     __name = ‘lemon‘
 3 
 4     def __init__(self,name):
 5         self.__name = name
 6 a = Student(‘lemon-X‘)
 7 try:
 8     print(a.name)
 9 except :
10     print(‘双下滑线的变量名被更名,所以找不到它,它被改名为_Class__attribute‘)
11 print(a._Student__name)
12 
13 print(Student._Student__name)