exercise: partition a list by equivalence

[David Eppstein]

In article <1108895373.013257.192310 at l41g2000cwc.googlegroups.com>,
 "John Machin" <sjmachin at lexicon.net> wrote:

> > it would be nice if the two working programs do not use some package.
> > This problem shouldn't need to.
> 
> Look at the newsgroup again. By my count there are apparently-working
> versions from SIX people: Reinhold, bear.+, Brian Beck, David Eppstein,
> yourself, and me. Only David's uses stuff that's not in the Python 2.4
> off-the-shelf distribution.

Where "stuff" means a single 62-line file that I linked to in my post.

-- 
David Eppstein
Computer Science Dept., Univ. of California, Irvine
http://www.ics.uci.edu/~eppstein/