On Thursday, February 24, 2011 10:09:53 AM UTC-7, Chris Rebert wrote: > On Thu, Feb 24, 2011 at 8:27 AM, Jeremy <jlco...@gmail.com> wrote: > > I just discovered the wiki page on sorting > > (http://wiki.python.org/moin/HowTo/Sorting/). This describes the new way > > of sorting a container instead of using the cmp function. But what do I do > > for custom objects? > > If I write __lt__, __gt__, etc. functions for my objects, will these be > >used? > > s/functions/methods/ > Yes, they will. As Bill Nye would say: "Try It!". The REPL exists for a > reason. > > If you're using Python 2.7+, you may want to use > functools.total_ordering() > [http://docs.python.org/library/functools.html#functools.total_ordering > ] for convenience. > > > Is this better than defining a key for sorting my custom objects? > > Unless there are multiple "obvious" ways to sort your objects, yes. > Third-party code will be able to sort+compare your objects. Sorting > your objects in your own code will be more concise. And you'll be able > to use the comparison operators on your objects.
I implemented __eq__ and __lt__ (and used functoos, thanks for the suggestion) and sorting works. Thanks for the help. Most importantly, I wanted to make sure I was doing this the right way and your post helped. Jeremy -- http://mail.python.org/mailman/listinfo/python-list
