python_day025静态属性

1.静态属性（附有装饰器）

class Room:
    def __init__(self,name,owner,width,length,height):
        self.name=name
        self.owner=owner
        self.width=width
        self.length=length
        self.height=height
    @property
    def cal_area(self):
        return self.width*self.length
r1=Room("厕所","alex",100,100,100000)
r2=Room("公共厕所","yuanhao",1,1,1)
print("%s住的%s总面积是%s" %(r1.owner,r1.name,r1.width*r1.length))
print("%s住的%s总面积是%s" %(r2.owner,r2.name,r2.width*r2.length))
# r1.cal_area
# r2.cal_area
print(r1.cal_area)
print(r2.cal_area)
print(r1.name)
print(r2.name)

2.利用常规类实例计算值和利用装饰器封装函数，调用取值，让用户觉察不到数据类型的处理方法

class Volume:
    def __init__(self,length,width,height):
        self.length=length
        self.width=width
        self.height=height
    @property
    def cal_volume(self):
        return self.length*self.width*self.height
v1 = Volume(10,20,30)
print("长宽高分别是%s,%s,%s" %(v1.length,v1.width,v1.height))
print("体积是%s" %(v1.length*v1.width*v1.height))
res = v1.cal_volume
print("体积是%s" %res)

3.pass