Python Set union() Method

Return a set that contains all items from both sets, duplicates are excluded:

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}

z = x.union(y)

print(z)

Definition and Usage

The union() method returns a set that contains all items from the original set, and all items from the specified set(s).

You can specify as many sets you want, separated by commas.

It does not have to be a set, it can be any iterable object.

If an item is present in more than one set, the result will contain only one appearance of this item.

set.union(set1, set2...)

Parameter	Description
set1	Required. The iterable to unify with
set2	Optional. The other iterable to unify with. You can compare as many iterables as you like. Separate each iterable with a comma

Unify more than 2 sets:

x = {"a", "b", "c"}
y = {"f", "d", "a"}
z = {"c", "d", "e"}

result = x.union(y, z)

print(result)