itertools - Unordered Pairs (pair sets) in Python from a list -


i have list of items

 alist = ['dog', 'cat', 'fish']

i want return unique unordered pairs, in case:

 (dog,cat)(dog,fish)(fish,cat)

itertools.combinations not take account unordered condition, not quite need.

where problem itertools?

import itertools  alist = ['dog', 'cat', 'fish'] result in itertools.combinations(alist, 2):     print result

output:

('dog', 'cat') ('dog', 'fish') ('cat', 'fish')

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