class groupcount(object): """Accept a (possibly infinite) iterable and yield a succession of sub-iterators from it, each of which will yield N values. >>> gc = groupcount('abcdefghij', 3) >>> for subgroup in gc: ... for item in subgroup: ... print item, ... print ... a b c d e f g h i j """ def __init__(self, iterable, n=10): = iter(iterable) self.n = n def __iter__(self): return self def next(self): return self._group( def _group(self, ondeck): yield ondeck for i in xrange(1, self.n): yield