from math import pi
class Circle:
def __init__(self,r):
self.r = r
@property#把这个方法伪装成属性
def perimeter(self):#property伪装成为属性不能传入任何参数
return 2*pi*self.r
@property#把这个方法伪装成属性
def area(self):#property伪装成为属性不能传入任何参数
return self.r**2*pi
c1 = Circle(5)
print(c1.area) # 圆的面积
print(c1.perimeter) # 圆的周长
# 属性 修改
class Person:
def __init__(self,name):
self.__name = name
@property
def name(self):
return self.__name + 'sb'
@name.setter #修改name
def name(self,new_name):
self.__name = new_name
tiger = Person('泰哥')
print(tiger.name)
tiger.name = '全班'
print(tiger.name)
# 属性 查看 修改 删除
class Person:
def __init__(self,name):
self.__name = name
self.price = 20
@property
def name(self):
return self.__name
@name.deleter #删除
def name(self):
del self.__name
@name.setter #修改
def name(self,new_name):
self.__name = new_name
brother2 = Person('二哥')
del Person.price
brother2.name = 'newName'
brother2
del brother2.name#自动触发@name.deleter方法
print(brother2.name)
# property 内置装饰器函数
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转载自blog.csdn.net/qq_37493425/article/details/88236214
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