>>>
>>> hand = '123'
>>> for r in xrange(2, len(hand) + 1):
    for subset in it.permutations(hand, r):
        print subset


('1', '2')
('1', '3')
('2', '1')
('2', '3')
('3', '1')
('3', '2')
('1', '2', '3')
('1', '3', '2')
('2', '1', '3')
('2', '3', '1')
('3', '1', '2')
('3', '2', '1')
>>> for r in xrange(2, len(hand) + 1):
    for subset in it.combinations(hand, r):
        print subset


('1', '2')
('1', '3')
('2', '3')
('1', '2', '3')
>>>