class ?Programer(object):
? ?hobby = "Play computer"
? ?def __init__(self,name,age,weight):
? ? ? ?self.name = name
? ? ? ?self._age = age
? ? ? ?self.__weight = weight
? ?@classmethod
? ?def ?get_hobby(cls):
? ? ? ?return cls.hobby

? ?@property
? ?def get_weight(self):
? ? ? ?return self.__weight

? ?def self_introduction(self):
? ? ? ?print "My name is %s \n I'm %d years old"%(self.name,self._age)


if __name__ == "__main__":
? ?programer = Programer("Albert",25,80)
? ?print dir(programer)
? ?print programer.__dict__
? ?print Programer.get_hobby()
? ?print programer.get_weight
? ?print programer.self_introduction()