@property 可以将python定义的函数“当做”属性访问,从而提供更加友好访问方式,但是有时候setter/getter也是需要的

class People:
def __init__(self,name,weight,height):
self.__name=name
self.weight=weight
self.height=height
@property
def bmi(self):
return self.weight / (self.height**2)
@bmi.deleter
def bmi(self):
del self.__name p1=People('wang',67,1.7)
del p1.bmi
print(p1.__name)

@bmi.deleter相当于一个接口,想要直接删除私有属性是不可以的,要有这么一个接口.删除私有属性

说明:同一属性的三个函数名要相同。(例子中都是bim)

@bmi.setter是修改

def bmi(self,新的参数)

classmethod

class Classmethod_Demo():
role = 'dog' @classmethod
def func(cls):
print(cls.role)
Classmethod_Demo.func()

staticmethod

class Staticmethod_Demo():
role = 'dog' @staticmethod
def func():
print("当普通方法用")
Staticmethod_Demo.func()
05-11 23:01