python subtract one list from another

1[item for item in x if item not in y]

1# Subtract list1 from list2 (find only items not in both lists)
2list1 = [2, 2, 2]
3list2 = [1, 1, 1]
4difference = []   # initialization of result list
5
6zip_object = zip(list1, list2)
7
8for list1_i, list2_i in zip_object:
9    difference.append(list1_i-list2_i) # append each difference to list
10
11print(difference)

1 c = [x for x in a if x not in b]