some_dict = {"firstname": "Albert", "nickname": "Albert", "surname": "Likins", "username": "Angel"} I would like to return the keys of my dict where their value exists for more than one time. Could some one show me how to implement this? a_list = [] for k,v in some_dict.iteritems(): if v in some_dict.values() and v != some_dict.keys(k): a_list.append(k) Continue reading...