> >But, EEK! Why did you need the eval there?? > >[x(y) for x in [lambda x:x*x, lambda x:x*x*x] for y in [1,2,3]] > >works fine as well. Good point! I was being unnecessarily obscure. Along same lines, we can iterate over predefined functions (in place of lambdas): >>> def f(x): return x*x >>> def g(x): return x*x*x >>> [k(x) for k in [f,g] for x in [1,2,3,4]] [1, 4, 9, 16, 1, 8, 27, 64] Kirby