参考链接：http://www.cnblogs.com/alex3714/articles/5213184.html
静态方法
只是名义上归类管理，实际上在静态方法里访问不了类或实例中的任何属性
class Dog(object):
def __init__(self,name):
self.name = name
@staticmethod #实际上跟类没什么关系了
def eat(self):
print("%s is eating %s"%(self.name,‘dd‘))
def talk(self):
print("%s is talking"%self.name)
d = Dog("ChenRH")
d.eat(d)
d.talk()
类方法：
只能访问类变量，不能访问实例变量
class Dog(object):
#n = 3333
name = "Huazai"
def __init__(self,name):
self.name = name
#@staticmethod #实际上跟类没什么关系了
@classmethod
def eat(self):
print("%s is eating %s"%(self.name,‘dd‘))
def talk(self):
print("%s is talking"%self.name)
d = Dog("ChenRH")
d.eat()
d.talk()
属性方法：
把一个方法变成一个静态属性
class Dog(object):
#n = 3333
name = "Huazai"
def __init__(self,name):
self.name = name
#@staticmethod #实际上跟类没什么关系了
#@classmethod
@property #attribute
def eat(self):
print("%s is eating %s"%(self.name,‘dd‘))
# def talk(self):
# print("%s is talking"%self.name)
d = Dog("ChenRH")
d.eat
class Dog(object):
#n = 3333
name = "Huazai"
def __init__(self,name):
self.name = name
self.__food =None
#@staticmethod #实际上跟类没什么关系了
#@classmethod
@property #attribute，把一个方法变成属性
def eat(self):
print("%s is eating %s"%(self.name,self.__food))
@eat.setter#修改属性
def eat(self,food):
print("set to food:",food)
self.__food = food
@eat.deleter#删除私有属性
def eat(self):
del self.__food
print("删完了")
# def talk(self):
# print("%s is talking"%self.name)
d = Dog("ChenRH")
d.eat
d.eat = "baozi"
del d.eat
静态属性方法适用场景举例：
你想知道一个航班当前的状态，是到达了、延迟了、取消了、还是已经飞走了， 想知道这种状态你必须经历以下几步:
1. 连接航空公司API查询
2. 对查询结果进行解析
3. 返回结果给你的用户
因此这个status属性的值是一系列动作后才得到的结果，所以你每次调用时，其实它都要经过一系列的动作才返回你结果，但这些动作过程不需要用户关心， 用户只需要调用这个属性就可以，明白 了么？
class Flight(object):
def __init__(self,name):
self.flight_name = name
def checking_status(self):
print("checking flight %s status " % self.flight_name)
return 1
@property
def flight_status(self):
status = self.checking_status()
if status == 0 :
print("flight got canceled...")
elif status == 1 :
print("flight is arrived...")
elif status == 2:
print("flight has departured already...")
else:
print("cannot confirm the flight status...,please check later")
@flight_status.setter #修改
def flight_status(self,status):
status_dic = {
0 : "canceled",
1 :"arrived",
2 : "departured"
}
print("\033[31;1mHas changed the flight status to \033[0m",status_dic.get(status) )
@flight_status.deleter #删除
def flight_status(self):
print("status got removed...")
f = Flight("CA980")
f.flight_status
f.flight_status = 2 #触发@flight_status.setter
del f.flight_status #触发@flight_status.deleter
