One with list comprehension.
>>> a = ['apple','banana','cherry','lemon','orange'] >>> b = ['car','lemon',80,443,'python','banana','yellow'] >>> [i for i in a if i in b] ['banana', 'lemon']not change to difference.
>>> [i for i in a if i not in b] ['apple', 'cherry', 'orange'] # sets >>> list(set(a) - set(b)) ['cherry', 'apple', 'orange']