A = set([1,2,3,3]) B = set([1,4,5]) A.update([0,9]) # 넣기 A.remove(9) # 빼기
print(A&B) print(A.intersection(B))
print(A | B) print(A.union(B))
print(A - B) print(A.difference(B))
print(A ^ B)