len True True x in s True True x not in s True True isdisjoint(other) True True issubset(other) True True True set <= other True True True True set < other True True True True issuperset(other) True True True set >= other True True True True set > other True True True True union(other,...) True True True True intersection(other,...) True True True True difference(other,...) True True True True symmetric_difference(other) True True True True copy() True True True True update(other,...) True True True True intersection_update(other,...) True True True True difference(other,...) True True True True symmetric_difference_update(other) True True True True add(elem) True True remove(elem) True True discard(elem) True True pop() True True True True True