I cannot access this thread right now so my answer my be rednundant, but anyway: http://docs.python.org/library/itertools.html#itertools.combinations
>>> from itertools import combinations
>>> print(list(combinations(range(4),2)))
[(0, 1), (0, 2), (0, 3), (1, 2), (1, 3), (2, 3)]
hth,
Alan Isaac
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