class Person(object):

    def __init__(self,name,gender,birth,**kw):

        self.name=name

        self.gender=gender

        self.birth=birth

        for k,v in kw.iteritems():

            setattr(self,k,v)

xiaoming = Person('Xiao Ming', 'Male', '1990-1-1', job='Student')

print xiaoming.name

print xiaoming.job

请问一下

 self.name=name

 self.gender=gender

 self.birth=birth

这几句代码有什么作用？意义？

另外*args和**kw有什么区别？还有**args，**kwargs?