guthrie wrote: > Beginner question! :-) > > x=[1,2,3,4] > for i in range(len(x)): > print x[:-i] > > >>> [] > >>> [1,2,3] > >>> [1,2] > >>> [1] > > 1) The x[:-0] result seems inconsistent to me; > I get the idea that -0=0, so it is taken as x[:0] -> []
that's what you get. > 2) how then should one do this basic left-recursive subsetting (easily). I am not sure what you mean, but replacing x[:-i] by x[:len(x)-i] you will get continuous behavior at i==0. -- http://mail.python.org/mailman/listinfo/python-list