SpreadTooThin wrote: > Simon Brunning wrote: > > On 10/16/06, Simon Brunning <[EMAIL PROTECTED]> wrote: > > > >>> a = [1,2,3,4,5,6,7,8,9,10] > > > >>> a.sort(key=lambda item: (((item-1) %3), item)) > > > >>> a > > > [1, 4, 7, 10, 2, 5, 8, 3, 6, 9] > > > > Re-reading the OP's post, perhaps sorting isn't what's required: > > > > >>> a[::3] + a[1::3] + a[2::3] > > [1, 4, 7, 10, 2, 5, 8, 3, 6, 9] > > > > -- > > Cheers, > > Simon B > > [EMAIL PROTECTED] > > http://www.brunningonline.net/simon/blog/ >
> Ok so this is what I got.. but there is an odd side effect: > > def reslice(series): > series.sort() > i = 1 > newseries = series[::3] > while(1): > c = series[i::3] > if len(c) >= 3: > newseries = newseries + c > else: > break > i = i + 1 > return newseries > > a = [2,1,4,3,6,5,8,7,10,9] > b = reslice(a) > print b > >>> [1, 4, 7, 10, 2, 5, 8, 3, 6, 9, 4, 7, 10] > > I have one extra 10 that I shouldn't... I think my loop termination is incorrect... maybe I should just stop when my new series size is the same size as the original? -- http://mail.python.org/mailman/listinfo/python-list
