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Showing content from http://mail.python.org/pipermail/python-dev/2009-September/091531.html below:

[Python-Dev] default of returning None hurts performance?

[Python-Dev] default of returning None hurts performance? [Python-Dev] default of returning None hurts performance?Raymond Hettinger python at rcn.com
Tue Sep 1 17:49:07 CEST 2009
>
> I fail to understand this crude logic.

If a function contains any looping (C or otherwise) or does much in  
the way of meaningful work, then it's unlikely that the single POP_TOP  
associated with an implied "return None" is taking much of the total  
runtime.


Raymond
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