Set.discard(), .remove() & .pop) Problem Submissions Leaderboard Discussions Editorial e .remove(x) This operation removes element r from the set. If element z does not exist, it raises a KeyError The .remove(x) operation returns None Example >set([1, 2, 3, 4, 5, 6, 7, 8, 9]) >>> s.remove (5) >>> print s set([1, 2, 3, 4, 6, 7, 8, 9]) >>> print s.remove (4) None >>>print s set([1, 2, 3, 6, 7, 8, 9]) >>> s.remove(0) KeyError: 0 .discard(x) This operation also removes element from the set. If element z does not exist, it does not raise a KeyError The.discard(x) operation returns None Example >set([1, 2, 3, 4, 5, 6, 7, 8, 9]) >>s.discard (5) >> print s set([1, 2, 3, 4, 6, 7, 8, 9]) >>> print s.discard (4) None >> print s set ([1, 2, 3, 6, 7, 8, 9]) >>> s.discard(0) >> print s set([1, 2, 3, 6, 7, 8, 9])