On Wed, Apr 14, 2010 at 11:39 AM, William Laffin <william.laf...@gmail.com> wrote: > Hello helpful sage-support list! > > Is this the following normal behavior? > ... > sage: for x in itertools.chain(itertools.imap(Permutations,range(4))): > print x > ....: > Standard permutations of 0 > Standard permutations of 1 > Standard permutations of 2 > Standard permutations of 3
Yes, this is the normal behavior. itertools.chain expects multiple inputs. It's like the difference between these two: sage: list(itertools.chain([[1], [2,3], [3,4]])) [[1], [2, 3], [3, 4]] sage: list(itertools.chain([1], [2,3], [3,4])) [1, 2, 3, 3, 4] Or in your case: sage: list(itertools.chain(*map(Permutations, range(3)))) [[], [1], [1, 2], [2, 1]] --Mike -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org To unsubscribe, reply using "remove me" as the subject.
