python *args and * kwargs

sys.argv 

sys.argv[0]文件本身

sys.argv[1] 第一个到第N个参数
sys.argv[2]
sys.argv[3]
sys.argv[4]

>>> def print_everything(*args):
        for count,thing in enumerate(args):
...         print "%d. %s".format(count, thing)
...
>>> print_everything('apple', 'banana', 'cabbage')
0. apple
1. banana
2. cabbage

>>> def table_things(**kwargs):
...     for name,value in kwargs.items():
...         print name, "=", value
...
>>> table_things(apple = 'fruit', cabbage = 'vegetable')
cabbage = vegetable
apple = fruit

>>> def print_three_things(a, b, c):
...     print "a =", a, "& b =", b, "& c =", c
...
>>> mylist = ['aardvark', 'baboon', 'cat']
>>> print_three_things(*mylist)
a = aardvark & b = baboon & c = cat