python内置装饰器@property

 1 Decorators make defining new properties or modifying existing ones easy:
 2 
 3 
 4 class C(object):
 5     @property
 6     def x(self):
 7         "I am the 'x' property."
 8         return self._x
 9 
10     @x.setter
11     def x(self, value):
12         self._x = value
13 
14     @x.deleter
15     def x(self):
16         del self._x

 1 """
 2 ------------------------------------
 3 @Time : 2019/7/4 20:57
 4 @Auth : linux超
 5 @File : python_property.py
 6 @IDE  : PyCharm
 7 @Motto: Real warriors,dare to face the bleak warning,dare to face the incisive error!
 8 @QQ   : 28174043@qq.com
 9 @GROUP: 878565760
10 ------------------------------------
11 """
12 
13 
14 class UserInfo(object):
15 
16     def get_name(self):
17         """通过类的方法访问类中的属性"""
18         return self.__name
19 
20     def set_name(self, name):
21         """通过外部传参的方式绑定属性"""
22         self.__name = name
23 
24 
25 if __name__ == '__main__':
26     user = UserInfo()
27     # 绑定name属性
28     user.set_name(["超哥", "linux超"])
29     print("我的名字是：", user.get_name())

我的名字是： [’超哥’, ‘linux超’]

Process finished with exit code 0

 1 """
 2 ------------------------------------
 3 @Time : 2019/7/4 22:02
 4 @Auth : linux超
 5 @File : python_class.py
 6 @IDE  : PyCharm
 7 @Motto: Real warriors,dare to face the bleak warning,dare to face the incisive error!
 8 @QQ   : 28174043@qq.com
 9 @GROUP: 878565760
10 ------------------------------------
11 """
12 
13 
14 class UserInfo(object):
15     @property
16     def name(self):
17         return self.__name
18 
19     @name.setter
20     def name(self, name):
21         if isinstance(name, str):
22             self.__name = name
23         else:
24             raise TypeError("The name must be str")
25 
26 
27 if __name__ == '__main__':
28     user = UserInfo()
29     # 绑定属性
30     user.name = "linux超"
31     print("我的名字是", user.name)
32     user.name = ["linux超", "超哥"]
33     print("我的名字是", user.name)

我的名字是 linux超
Traceback (most recent call last):
  File "D:/LingMengPython16/LingMengPython16/cnblogs/python_class.py", line 32, in <module>
    user.name = ["linux超", "超哥"]
  File "D:/LingMengPython16/LingMengPython16/cnblogs/python_class.py", line 24, in name
    raise TypeError("The name must be str")
TypeError: The name must be str

Process finished with exit code 1

 1 """
 2 ------------------------------------
 3 @Time : 2019/7/4 20:57
 4 @Auth : linux超
 5 @File : python_property.py
 6 @IDE  : PyCharm
 7 @Motto: Real warriors,dare to face the bleak warning,dare to face the incisive error!
 8 @QQ   : 28174043@qq.com
 9 @GROUP: 878565760
10 ------------------------------------
11 """
12 
13 
14 class UserInfo(object):
15 
16     def __init__(self, name, age):
17         self.__name = name
18         self.__age = age
19 
20 if __name__ == '__main__':
21     user = UserInfo('linux超', 18)
22     print(user.__name)

Traceback (most recent call last):
  File "D:/LingMengPython16/LingMengPython16/cnblogs/python_property.py", line 22, in <module>
    print(user.__name)
AttributeError: 'UserInfo' object has no attribute '__name'

Process finished with exit code 1

 1 """
 2 ------------------------------------
 3 @Time : 2019/7/4 20:57
 4 @Auth : linux超
 5 @File : python_property.py
 6 @IDE  : PyCharm
 7 @Motto: Real warriors,dare to face the bleak warning,dare to face the incisive error!
 8 @QQ   : 28174043@qq.com
 9 @GROUP: 878565760
10 ------------------------------------
11 """
12 
13 
14 class UserInfo(object):
15 
16     def __init__(self, name):
17         self.__name = name
18 
19     @property
20     def name(self):
21         """通过类的方法访问类中的私有属性"""
22         return self.__name
23 
24 if __name__ == '__main__':
25     user = UserInfo('linux超')
26     print("获取name属性：", user.name)

获取name属性： linux超

Process finished with exit code 0