This script: d = [1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L, 9L, 8L, 7L, 6L, 5L, 4L, 3L, 2L, 1L] print reduce(lambda x, y: x*x + y*y, d) hangs up my python interpreter (on NT4). Is it a bug or my mistake? How about UNIX? -- ==================== Oleg Orlov orlov at diasoft.ru