1，*args  相当于list列表

def fun_args(farg, *args):  
    print "arg:", farg  
    for value in args:  
        print "another arg:", value  
  
fun_args(1, "2", 3) # *args可以当作可容纳多个变量组成的list 

2，**kwargs的用法 相当于字典

    def fun_kwargs(farg, **kwargs):  
        print "arg:", farg  
        for key in kwargs:  
            print "another keyword arg: %s: %s" % (key, kwargs[key])  
      
      
    fun_kwargs(farg=1, myarg2="2", myarg3=3)