Python 只读属性的实现

class person:   
    def __init__(self,x):
        self.__age = 10;
    def age(self):
        return self.__age;
t = person(22)
# t.__age = 100
print(t.age())

最好的方法

class MyCls(object):
    __weight = 50

    @property  #以访问属性的方式来访问weight方法
    def weight(self):
        return self.__weight

if __name__ == '__main__':
    obj = MyCls()
    print(obj.weight)
    obj.weight = 12

Traceback (most recent call last):
50
  File "C:/PythonTest/test.py", line 11, in <module>
    obj.weight = 12
AttributeError: can't set attribute