Hello Ishwor , The simpliest way I can explain slicing is that the slices point to the spot *between* the items...... Take this list for example slicer = [0,1,2,3,4,5] >>> slicer [1] 1 >>> slicer [1:2] [1] >>> slicer [:-1] [0,1,2,3,4] >>> slicer[2,4] [2,3] Hth, M.E.Farmer