Find Duplicates in List

find_duplicates.ipynb

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     "data": {
      "text/plain": [
       "['twitter']"
      ]
     },
     "execution_count": 1,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import collections\n",
    "mylist = ['twitter', 'facebook', 'instagram', 'twitter']\n",
    "[item for item, count in collections.Counter(mylist).items() if count > 1]"
   ]
  }
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