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getattr() on nested functions?

Gabriel Genellina gagsl-py2 at yahoo.com.ar
Wed Aug 20 05:16:08 EDT 2008 
En Wed, 20 Aug 2008 05:34:38 -0300, Gabriel Rossetti  
<gabriel.rossetti at arimaz.com> escribi�:

> I can't get getattr() to return nested functions, I tried this :
>
>  >>> def toto():
> ...     def titi():
> ...             pass
> ...     f = getattr(toto, "titi")
> ...     print str(f)
> ...
>  >>> toto()
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "<stdin>", line 4, in toto
> AttributeError: 'function' object has no attribute 'titi'
>  >>>
>
> I thought that since functions are objects, that I could obtain it's  
> nested functions. How come it doesn't work and what can I do to  
> fix/replace it? I'm using it in code that is like this :

Yes, functions are objects, but inner functions aren't attributes of the  
outer; they live in its local namespace instead (and inner functions won't  
exist until the outer function executes)

> def __test(self, action, *args):
>         def request(params):
>             pass
>                    def submit(params, values):
>             pass
>                    def update(params, values):
>             pass
>                    def delete(params):
>             pass
>                result = getattr(__test, action)(*args)
>                return resultToXml(result)
>
> where "action" is a string containing either "request", "submit",  
> "update", or "delete". I was using an evel() with this form :
>
> result = eval(action + "(params, values)")
>
> but I didn't find that very clean.

Try using locals()[action]

-- 
Gabriel Genellina
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