python *args, **kwargs

gistfile1.py

>>> def test(a, b):
...  print a, b
... 
>>> test('hello', 'world')
hello world
>>> test(*('hello', 'world'))                     # tuple
hello world
>>> test(*iter(['hello', 'world']))               # iter
hello world
>>> test(*['hello', 'world'])                     # list
hello world
>>> test(*['hello', 'world', '!'])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: test() takes exactly 2 arguments (3 given)
>>>
>>> test(a = 'hello', b = 'world')
hello world
>>> test(**{'a':'hello', 'b':'world'})            # dict
hello world
>>> test(*{'hello':'???', 'world':'???'})         # list
world hello
>>> test(*{'hello':'???', 'world':'???'}.keys())  # list
world hello
>>>
>>>
>>> def test(*args, **kwargs):
...     print args
...     print kwargs
... 
>>> test('hello', 'world', key0 = 'hello', key1 = 'world')
('hello', 'world')
{'key1': 'world', 'key0': 'hello'}