code: def diff_index(self, index1, index2):
          
          if index1.is_fullfilled_by(index2) and index2.is_fullfilled_by(index1):
              return False
  
          return True
docs: Finds the difference between the indexes index1 and index2.
  
          Compares index1 with index2 and returns True if there are any
          differences or False in case there are no differences.
  
          :type index1: Index
          :type index2: Index
  
          :rtype: bool