>>> from sympy.utilities.iterables import permutations
>>> for i in permutations(range(3)):
... print i
...
(0, 1, 2)
(0, 2, 1)
(1, 0, 2)
(1, 2, 0)
(2, 0, 1)
(2, 1, 0)
;-) but if you help(permutations) you will see that we have just imported
permutations from itertools.
Also note that we have multiset_permutations (and one for combinations and
partitions) for generating unique permutations of lists that contain
repeated elements
>>> for i in permutations('aab'):
... print i
...
('a', 'a', 'b')
('a', 'b', 'a')
('a', 'a', 'b')
('a', 'b', 'a')
('b', 'a', 'a')
('b', 'a', 'a')
>>> for i in multiset_permutations('aab'):
... print i
...
['a', 'a', 'b']
['a', 'b', 'a']
['b', 'a', 'a']
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