join two set in python

set1 = {1, 4, 5, 6}
set2 = {1, 2, 3}

set3 = set1.union(set2)
print(set3)

Here is what the above code is Doing:
1. We create two sets, set1 and set2.
2. We use the union() method to combine the two sets.
3. We print the result.