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

Jake McGuire mcguire at google.com
Tue Sep 1 18:40:17 CEST 2009

On Mon, Aug 31, 2009 at 5:01 PM, Greg Ewing <greg.ewing at canterbury.ac.nz>wrote:

> Antoine Pitrou wrote:
>  Did your coworker run any timings instead of basing his assumptions on
>> bytecode
>> size?
> In any case, what are you suggesting -- that the last value
> returned by a function call in the body should be the
> default return value?
> I don't think the unpredictability that would introduce
> would be a good idea.

Never mind the fact that there is a lot of Python code out there that
assumes that functions without an explicit return value, return None.

This is pretty fundamental to the Python API.

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