python 反射为类添加静态属性#setattr＃@ property

Posted 2021-05-09

class A:
    def __init__(self):
        self.inner_name = "alex"

a = A()

@property
def out_name(self):
    print("this is get fun")
    return self.inner_name

@out_name.setter
def out_name(self,value):
    print("this is set fun")
    self.inner_name = value

# 将外面的函数（已经被装饰成静态属性），用setattr 添加到A类中，在A 类中的名字叫name
setattr(A,"name",out_name)

# 直接像调用属性一样调用a实例的name方法
print(a.name)

print("="*15)

# 设置属性值
a.name = "egon"

print("="*15)

print(a.name)