example_set_one = set([1,2,3])
example_set_two = set([3,4,5])

# combine the sets together
# use "union" function for this
print(example_set_one.union(example_set_two))
# output: {1, 2, 3, 4, 5}

# only print elements that are in both sets
# use "intersect" funtion for this
print(example_set_one.intersection(example_set_two))
# output: {3}

# find the difference between the sets
# use "difference" for this
print(example_set_one.difference(example_set_two))
# this basically means any elements from 
# "example_set_two" is removed from "example_set_one"
# same as "example_set_one - example_set_two"
# output: {1, 2}