How to join two sets in one line without using “|”

Question

Assume that S and T are assigned sets. Without using the join operator |, how can I find the union of the two sets? This, for example,

Answer 1

Suppose you have 2 lists

 A = [1,2,3,4]
 B = [3,4,5,6]

so you can find A Union B as follow

 union = set(A).union(set(B))

also if you want to find intersection and non-intersection you do that as follow

 intersection = set(A).intersection(set(B))
 non_intersection = union - intersection