It is an unordered collection of items. Set items are unique and immutable. Python has a set of built-in methods that We can use on sets.

**add():**It is used to add element in a set.**clear():**It is used to remove all elements from the set.**copy():**It returns the copy of a set.**difference():**It returns a set containing the difference between two or more sets.**difference.update():**It removes the items in the set that are also included in another, specified set.**discard():**It is used to remove the elements from the set.**intersection():**It is used to return the set which is intersection of two or more set.**intersection.update():**It is used to removes the items in the set that are not present in other, specified set.**isdisjoint():**It is used to check that two sets are disjoint set or not.**issubset():**It is used to check if a set is subset of another set.**issuperset():**It is used to check if a set is superset of another set or not.**pop():**It is used to remove an element from the set.**remove():**It is used to remove the specified element from the set.**symmetric_difference():**It returns the set with the symmetric difference of two set.**symmetric_difference_update():**It is used inserts the symmetric differences from this set and another.**union():**It return a set containing the union of sets.**update():**It is used to add element to the set.