.. method:: update(other, ...)
set |= other | ...
- Update the set, adding elements from *other*.
+ Update the set, adding elements from all others.
.. versionchanged:: 2.6
Accepts multiple input iterables.
.. method:: intersection_update(other, ...)
set &= other & ...
- Update the set, keeping only elements found in it and *other*.
+ Update the set, keeping only elements found in it and all others.
.. versionchanged:: 2.6
Accepts multiple input iterables.