Generally, I would also recommend using pymoo [1] if you have multi-objective optimization problems. They also have an implementation of Non-dominated Sorting [

Generally, I would also recommend using pymoo [1] if you have multi-objective optimization problems. They also have an implementation of Non-dominated Sorting [2], which should serve the same purpose. [1]: https://pymoo.org/ https://pymoo.org/ [2]: https://github.com/msu-coinlab/pymoo/blob/master/pymoo/util/nds/fast_non_dominated_sort.py https://github.com/msu-coinlab/pymoo/blob/master/pymoo/util/...