runninguniq.py

def runningUniq(anArray, compare=lambda x,y: x==y):                                                                      
      """ non-memory efficient linear deduplicator """                                                                     
      retAr = []                                                                                                           
      for n, elem in enumerate(anArray):                                                                                   
          if n == 0:                                                                                                       
              last = elem                                                                                                  
              retAr.append(elem)                                                                                           
              continue                                                                                                     
          if compare(elem, last):                                                                                          
              last = elem                                                                                                  
              continue                                                                                                     
          else:                                                                                                            
              last = elem                                                                                                  
              retAr.append(elem)                                                                                           
      return retAr