Python 2.7 (r27:82525, Jul  4 2010, 09:01:59) [MSC v.1500 32 bit (Intel)] on win32
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>>> funcs = []
>>> def decorator(function):
    funcs.append(function)


>>> @decorator
def function(): print "function"

>>> function()

Traceback (most recent call last):
  File "<pyshell#7>", line 1, in <module>
    function()
TypeError: 'NoneType' object is not callable
>>> funcs[0]()
function
>>>