python 语法糖之 *args and **kwargs 介绍与使用

args and kwargs 用于定义函数的参数，args用于没有标签的参数列表，kwargs用于有标签的参数列表
下面的demo，

*args

def test_var_args(f_arg, *argv):
    print "first normal arg:", f_arg
    for arg in argv:
        print "another arg through *argv :", arg

test_var_args('yasoob','python','eggs','test')

*kwargs

def greet_me(**kwargs):
    if kwargs is not None:
        for key, value in kwargs.iteritems():
            print "%s == %s" %(key,value)
 
>>> greet_me(name="yasoob")
name == yasoob