[Python-Dev] Joys of Optimization

[Raymond Hettinger]

[Michael Hudson]
> Just a couple of thoughts:
> 
> 1) listextend_internal calls PyObject_Size twice, for no obvious
>    reason.

Good eye.  Will remove the duplicate call.


> 2) It's a little odd that listextend_internal consumes a reference to
>    b.  Perhaps a comment?

It probably was a good idea before all the refactoring because it
simplified the calling code and because the b argument was always a
temporary sequence.  Now that there is only one caller, the
responsibility for the DECREF could be shifted back to the caller --
it's a matter of taste.


Raymond