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():

            self.k = v //这里为什么要用setattr或者 dict的update，这两个有什么区别呢？

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

print xiaoming.name

print xiaoming.job