Python中属性

属性定义的两种方式：

1、num1=property(GetNum,SetNum)  

class Pro():   
    def __init__(self):
        self._num=0
        
    def GetNum(self):
        return self._num

    def SetNum(self,num):
        self._num=num

    num1=property(GetNum,SetNum)     

c=Pro()
print(c.GetNum())

c.SetNum(10)
print(c.GetNum())

print(c.num1)

2、通过装饰器的形式

class Pro():   
    def __init__(self):
        self._num=0
        
    @property    
    def num(self):
        return self._num
    
    @num.setter
    def num(self,num):
        self._num=num
  

c=Pro()
print(c.num)

c.num=2
print(c.num)