#靜態(tài)方法 只是名義上歸類管理，實(shí)際上在靜態(tài)方法里訪問(wèn)不了類或?qū)嵗?的任何屬性
class Dog(object):
def __init__(self,name):
self.name=name
@staticmethod #實(shí)際上跟類本身已沒(méi)什么關(guān)系，只是名義上是類的方法(與類無(wú)關(guān)，不能訪問(wèn)類里的任何屬性和方法)
def eat(self,name):
print("%s is eating %s"%(self.name,name))

d=Dog('sb')
# d.eat('baozi')#出錯(cuò) 原因是eat需要一個(gè)self參數(shù)，但調(diào)用時(shí)卻沒(méi)有傳遞，沒(méi)錯(cuò)，因?yàn)楫?dāng)eat變成靜態(tài)方法后，再通過(guò)實(shí)例調(diào)用時(shí)就不會(huì)自動(dòng)把實(shí)例本身當(dāng)作一個(gè)參數(shù)傳給self了
#解決辦法
#1.調(diào)用時(shí)主動(dòng)傳遞實(shí)例本身給eat方法#在eat中去掉self參數(shù)，但這也意味著，在eat中不能通過(guò)self.調(diào)用實(shí)例中的其他變量了
d.eat(d,'baozi')
#執(zhí)行結(jié)果
>>>sb is eating baozi

class Dog(object):
name='SB' #類變量
def __init__(self,name):
self.name=name
@classmethod #類方法只能訪問(wèn)類變量，不能訪問(wèn)實(shí)例變量
def eat(self,name):
print('%s is eating %s'%(self.name,name))
def talk(self,something):
print("%s is talking %s"%(self.name,something))
d=Dog('Lulu')
d.eat('Mantou')
#執(zhí)行結(jié)果
SB is eating Mantou

class Dog(object):
name='suantou'
def __init__(self,name):
self.name=name
@property #把一個(gè)方法變成一個(gè)靜態(tài)屬性
def eat(self):
print('%s is eating %s'%(self.name,'something'))
@eat.setter #為eat屬性賦值
def eat(self,food):
print('set to food',food)
def talk(self,something):
print("%s is talking %s"%(self.name,something))
d=Dog('Lulu')
#d.eat('baozi')出錯(cuò) 說(shuō)NoneType is not callable, 因?yàn)閑at此時(shí)已經(jīng)變成一個(gè)靜態(tài)屬性了， 不是方法了， 想調(diào)用已經(jīng)不需要加()號(hào)了，直接d.eat就可以了
d.eat
d.eat='baozi'

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 # 刪除
def flight_status(self):
print("status got removed...")
f = Flight("CA980")
f.flight_status
f.flight_status = 2 # 觸發(fā)@flight_status.setter
del f.flight_status # 觸發(fā)@flight_status.deleter