How about this hack: >>> import types >>> class lazy_range(object): ... def __getitem__(self, l): ... start = l[0] ... ... if isinstance(l[1], types.EllipsisType): ... step = 1 ... if len(l) > 2: ... stop = l[2] ... else: ... stop = None ... else: ... step = l[1] - l[0] ... if len(l) > 3: ... stop = l[3] ... else: ... stop = None ... ... for i in xrange(start, stop+1, step): ... yield i >>> >>> l = lazy_range() >>> print [i for i in l[1,3,...,10]] [1, 3, 5, 7, 9] >>> print [i for i in l[1,...,10]] [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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