120     def update(self, other):  argument
126     def __ior__(self, other):  argument
130     def difference(self, other):  argument
136     def difference_update(self, other):  argument
138     def __isub__(self, other):  argument
147     def intersection(self, other):  argument
151     def intersection_update(self, other):  argument
153     def __iand__(self, other):  argument
159     def issubset(self, other):  argument
163     def __lt__(self, other):  argument
166     def issuperset(self, other):  argument
170     def __gt__(self, other):  argument
173     def __eq__(self, other):  argument
178     def symmetric_difference(self, other):  argument
184     def symmetric_difference_update(self, other):  argument
186     def __ixor__(self, other):  argument
195     def union(self, other):  argument
199     def isdisjoint(self, other):  argument