Python
# Program to find list difference (A - B)
list1 = input("Enter first list elements: ").split()
list2 = input("Enter second list elements: ").split()
difference = [x for x in list1 if x not in list2]
print("Elements in first list but not in second:", difference)Output
Enter first list elements: 1 2 3 4 Enter second list elements: 3 4 Elements in first list but not in second: ['1', '2']
We iterate over the first list and keep only those elements that do not appear in the second list.