Get a unique list of items that occur more than once in a list

Question

I have a list of items:

mylist = [\'A\',\'A\',\'B\',\'C\',\'D\',\'E\',\'D\']

I want to return a unique list of items that appear more than

Answer 1

Using a similar approach to others here, heres my attempt:

from collections import Counter

    def return_more_then_one(myList):
         counts = Counter(my_list)
         out_list = [i for i in counts if counts[i]>1]
         return out_list