David Gibb: > For example: if my values are ['a', 'b', 'c'], then all possible lists > of length 2 would be: aa, ab, ac, ba, bb, bc, ca, cb, cc. >>> from itertools import product >>> list(product("abc", repeat=2)) [('a', 'a'), ('a', 'b'), ('a', 'c'), ('b', 'a'), ('b', 'b'), ('b', 'c'), ('c', 'a'), ('c', 'b'), ('c', 'c')] Bye, bearophile