On 6/18/2009 7:23 AM karma said... > Hi Robert, > > Thanks for the link. However, I am looking for eliminating consecutive > duplicates rather than all duplicates - my example wasn't clear, > apologies for that. > > x=[1,1,1,3,2,2,2,4,4,2,2] > > [1 ,3 ,2 ,4 ,2 ] Something like [ ii for ii,jj in zip(x,x[1:]+[-1]) if jj != ii] Emile