python class的只读属性设置

只读属性的设置

 

class Person:
    def __init__(self):
        self.__age=30
        self.__name="default"
#这里是方法1
    @property
    def age(self):
        return self.__age
    @age.setter
    def age(self,value):
        self.__age=20
    @age.deleter
    def age(self):
        del self.__age

#这里是方法2

    def get_name(self):
        return self.__name

    def set_name(self, value):
        self.__name = value

    def del_name(self):
        del self.__age

    name=property(get_name,set_name,del_name)

p1=Person()
print(p1.age)
p1.age=10
print(p1.age)
print(p1.name)
p1.name="world"
print(p1.name)
print(p1.__dict__)
print(Person.__dict__)
print(Person.__base__)
print(Person.__doc__)
print(Person.__name__)
print(Person.__module__)
print(p1.__class__)

30
20
default
world
{'_Person__age': 20, '_Person__name': 'world'}
{'__module__': '__main__', '__init__': <function Person.__init__ at 0x0000020B30CD6EE8>, 'age': <property object at 0x0000020B2EDB5E08>, 'get_name': <function Person.get_name at 0x0000020B30CE3A68>, 'set_name': <function Person.set_name at 0x0000020B30CE39D8>, 'name': <property object at 0x0000020B30CF3818>, '__dict__': <attribute '__dict__' of 'Person' objects>, '__weakref__': <attribute '__weakref__' of 'Person' objects>, '__doc__': None}
<class 'object'>
None
Person
__main__
<class '__main__.Person'>