這篇文章寫的滿好的耶，結論： 1星= array, 2星=dictionary.
url: https://www.saltycrane.com/blog/2008/01/how-to-use-args-and-kwargs-in-python/
1星範例：
def test_var_args(farg, *args):
print "formal arg:", farg
for arg in args:
print "another arg:", arg
test_var_args(1, "two", 3)
Results:
formal arg: 1 another arg: two another arg: 3
2星範例：
def test_var_kwargs(farg, **kwargs):
print "formal arg:", farg
for key in kwargs:
print "another keyword arg: %s: %s" % (key, kwargs[key])
test_var_kwargs(farg=1, myarg2="two", myarg3=3)
Results:
formal arg: 1 another keyword arg: myarg2: two another keyword arg: myarg3: 3
經典範例：
def test_var_args_call(arg1, arg2, arg3):
print "arg1:", arg1
print "arg2:", arg2
print "arg3:", arg3
args = ("two", 3)
test_var_args_call(1, *args)
Results:
arg1: 1 arg2: two arg3: 3
def test_var_args_call(arg1, arg2, arg3):
print "arg1:", arg1
print "arg2:", arg2
print "arg3:", arg3
kwargs = {"arg3": 3, "arg2": "two"}
test_var_args_call(1, **kwargs)
Results:
arg1: 1 arg2: two arg3: 3