diff 2 lists python

1list1 = [1, 2, 4]
2list2 = [4, 5, 6]
3
4set_difference = set(list1) - set(list2)
5list_difference = list(set_difference)
6
7print(list_difference)
8
9#result
10[1,2]

1def get_diff(a: list,b: list) -> list:
2    return list(set(a) ^ set(b))