need help on generator...
francis.girard at free.fr
Fri Jan 21 10:54:52 EST 2005
Le vendredi 21 Janvier 2005 16:06, Craig Ringer a écrit :
> On Fri, 2005-01-21 at 22:38 +0800, Craig Ringer wrote:
> > 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) )
> Where 'x' is list to operate on, as I should've initially noted. Sorry
> for the reply-to-self.
> I did say "awful" for a reason ;-)
> Craig Ringer
First, I think that you mean :
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)]
(with square brackets).
this is not lazy anymore (like Denis S. Otkidach previous answer was) because
the __whole__ list get constructed __before__ any other piece of code have a
chance to execute. The type of consecutive_sets is simply a list, not a
I'm just trying to understand and obviously I'm missing the point.
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