[Twisted-Python] domish.Element.__getattr__() or xpath.XPathQuery

Gabriel Rossetti gabriel.rossetti at arimaz.com
Mon Feb 8 02:26:43 EST 2010

exarkun at twistedmatrix.com wrote:
> On 4 Feb, 10:48 am, gabriel.rossetti at arimaz.com wrote:
>> Hello everyone,
>> I was wondering what you would recommend, accessing nodes via
>> domish.Element.__getattr__()
>> (e.g. el.node1.node1_1, where el is /msg) or via xpath.XPathQuery()
>> (e.g. xpath.XPathQuery("/msg/node1/node1_1").queryForNodes(el)[0])?
>> I was wondering which would be faster, the __getattr__() is O(n) (in my
>> example there are 2 calls) but what about xpath.XPathQuery()?
> I don't think you'll find the xpath API to be much more optimized.  I 
> haven't used XMPP much, but considering the xpath implementation is 
> incomplete (and afaik there's little documentation about what subset is 
> supported), I'd stick with the simpler (if still terrible) 
> Element.__getattr__.
> Jean-Paul
Ok, thank you. Just a question, would it be interesting to anyone to be 
to choose in between the internal XPATH implementation and an external
lib/implementation for the XMPP stuff? I have often wondered if it would
not be better to allow the user to choose.


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