improving a huge double-for cycle

[Terry Reedy]

Gabriel Genellina wrote:
> En Fri, 19 Sep 2008 02:11:51 -0300, Tino Wildenhain <tino at wildenhain.de> 
> escribió:
> 
>> Also I never saw a list where the threading often goes wrong like
>> this here - is there any special setup or is it just peoples MUA
>> which screws up?
> 
> Perhaps it's due to the newsgroup/list duality...

Actually, the situation is a c.l.p <==> python-list <==> 
gmane.c.p.general triality.