Question

My problem is very similar to the one linked below except that if there was a [2,1] element I would need that to be deleted too.

Removing duplicates from a list of lists

I’ve tried all sorts of things but just can’t make it work. Any help would be much appreciated!

Thanks.

Answer 1

Maybe what you really want is a set of sets

unique = set(map(set, list_of_lists))

Edit: well, but that doesn’t work. alas, sets cannot contain sets because sets are unhashable. frozenset is, though:

unique = set(map(frozenset, list_of_lists))