On Thu, Jul 11, 2013 at 8:52 AM, Russel Walker <russ.po...@gmail.com> wrote: > Just some dribble, nothing major. > > I like using slices but I also noticed that a slice expression returns a new > sequence. > > I sometimes find myself using them in a for loop like this: > > > seq = range(10) > for even in seq[::2]: > print even > > > (That's just for an example) But wouldn't it be a bit of a waste if the slice > expression returns a whole new list just when all you want to do in this case > is iterate over it once? > > I suppose you could get around that will a little more code like: > > > seq = range(10) > for x in xrange(0, len(seq), 2): > print seq[x] > > > But it would be nice there was a way to iterate over a 'slice' of sorts, that > would act as a generator.
That would be the itertools.islice function. -- http://mail.python.org/mailman/listinfo/python-list
