Rich Healey <[email protected]> wrote:
> It seems that my problem was that I can't assign a new function to the
> name func within the callonce() function. I can however interact with
> the func object (in this case storing information about whether or not
> I'd called it in it's __RECALL item.
>
> Is there a cleaner solution?
>
You want to call something, and have that something remember state between
each call? If it was me I'd define a class rather than a function.
>> class CallableOnlyOnce(object):
def __init__(self, func):
self.func = func
def __call__(self):
f = self.func
if f:
self.func = None
return f()
>>> def callonce(func):
return CallableOnlyOnce(func)
>>> @callonce
def t2():
print "T2 called"
>>> t2()
T2 called
>>> t2()
>>>
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