You can use dictionary comprehension : Say : dict1 = {'a': 123, 'b': 456} set1 = {'a'}
intersection : >>> { key:dict1[key] for key in dict1 if key in set1 } {'a': 123} difference : >>> { key:dict1[key] for key in dict1 if not key in set1 } {'b': 456} -- https://mail.python.org/mailman/listinfo/python-list