On Thu, Feb 12, 2009 at 4:25 AM, Alan Gauld <[email protected]> wrote:
> Thats tricky! Dictionaries are not sorted and do not retain insertion order. > But you need to have an order that will work with sorted(). > Its not just the order you add items to the dict. To store an > arbitrary order I suspect you would need to maintain a > secondary list with the keys in the order of insertion. > The most reliable way to dop that would be to subclass > dict. Somebody may already have done that so its worth > a google... In fact this is planned for inclusion in Python 2.7: http://www.python.org/dev/peps/pep-0372/ The PEP lists several implementations including one with the specified API: http://dev.pocoo.org/hg/sandbox/raw-file/tip/odict.py Kent _______________________________________________ Tutor maillist - [email protected] http://mail.python.org/mailman/listinfo/tutor
