duplicate_items_function.py

# -*- coding: utf-8 -*-
"""duplicate_items_function.ipynb

Automatically generated by Colaboratory.

Original file is located at
    https://colab.research.google.com/drive/13oOpgQf6GQDzp9Vhxcrq9EoOELbMObW5

**Method 1**
"""

from collections import Counter

def DuplicateItemsAre(items):
   test_set=set()
   d=list()

   for item in items :

       k=len(test_set)
       test_set.add(item)
       t=len(test_set)
      
       if k==t :

         d.append(item)          
         duplicate_items=Counter(d)

   for item in duplicate_items:

        print(item,"appears " ,duplicate_items.get(item)+1,"times")

"""**Method** **2** 


"""

from collections import Counter

def DuplicateItems(items):
   test_set=set()
   d=list()
   counts={}

   for i in items :

       k=len(test_set)
       test_set.add((i))
       t=len(test_set)
      
       if k==t :

         counts[i]=items.count(i)
  

   return counts

L=["osama","osama",1,2,3,3,1,2,5,5,8,8,1,1]

DuplicateItems(L)

DuplicateItemsAre(L)