"Frank Millman" wrote in message news:nqtlue$unj$1 at blaine.gmane.org... > Assume you have a tuple of tuples - > a = ((1, 2), (3, 4)) > You want to add a new tuple to it, so that it becomes - > ((1, 2), (3, 4), (5, 6)) Thanks all. The one I was looking for was a += (5, 6), I understand it now - makes perfect sense. Frank