code: def item_object_hook(dct):
      
      if len(dct.keys()) > 1:
          return dct
      if 'S' in dct:
          return dct['S']
      if 'N' in dct:
          return convert_num(dct['N'])
      if 'SS' in dct:
          return set(dct['SS'])
      if 'NS' in dct:
          return set(map(convert_num, dct['NS']))
      return dct
docs: A custom object hook for use when decoding JSON item bodys.
      This hook will transform Amazon DynamoDB JSON responses to something
      that maps directly to native Python types.