On Fri, 2005-01-21 at 17:14 +0300, Denis S. Otkidach wrote:
> On 21 Jan 2005 05:58:03 -0800
> [EMAIL PROTECTED] (Joh) wrote:
>
> > i'm trying to understand how i could build following consecutive sets
> > from a root one using generator :
> >
> > l = [1,2,3,4]
> >
> > would like to produce :
> >
> > [1,2], [2,3], [3,4], [1,2,3], [2,3,4]
>
> >>> def consecutive_sets(l):
> ... for i in xrange(2, len(l)):
> ... for j in xrange(0, len(l)-i+1):
> ... yield l[j:j+i]
Since you have a much faster brain than I (though I ended up with
exactly the same thing barring variable names) and beat me to posting
the answer, I'll post the inevitable awful generator expression version
instead:
consecutive_sets = ( x[offset:offset+subset_size]
for subset_size in xrange(2, len(x))
for offset in xrange(0, len(x) + 1 - subset_size) )
--
Craig Ringer
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