[Python-Dev] Rich Comparisons and New Coercions

[Eric S. Raymond]

Guido van Rossum <guido@python.org>:
> [Moshe, on rich comparisons]
> > Nope. I'm not even sure if they're going to be in 2.1. DA?
> 
> Yes, they should go into 2.1. 

Good.  Within a few hours after I see that feature in the beta I'll
have a very rich Set class for the standard library.  It includes all
the standard boolean operations, symmetric difference, powerset, and
useful overloads for most of the standard operators.  As the header
comment says:

# A set-algebra module for Python
#
# The functions work on any sequence type and return lists.
# The set methods can take a set or any sequence type as an argument.

Most of the code is tested already.  All it's waiting on is rich comparisons
so I can handle partial-ordering of sets properly.
-- 
		<a href="http://www.tuxedo.org/~esr/">Eric S. Raymond</a>

When only cops have guns, it's called a "police state".
        -- Claire Wolfe, "101 Things To Do Until The Revolution"