You are correct. Dicts are ordered by insertion. Also, I'd like to add that, maybe surprisingly, sets are not. >>> set([3, 2, 1]) {1, 2, 3} >>> se

You are correct. Dicts are ordered by insertion. Also, I'd like to add that, maybe surprisingly, sets are not. >>> set([3, 2, 1]) {1, 2, 3} >>> set([10, 100, 1000]) {1000, 10, 100}