On Mon, Jun 22, 2009 at 3:25 AM, Franco Saliola<sali...@gmail.com> wrote:
>
> Hello,
>
> Here is a quick description of what is below: Subclasses of Element
> complain that no sorting algorithm is defined even when all the rich
> comparison methods have been implemented. Bug?

If it helps, I create this page, that lists when each method is being called:

http://docs.sympy.org/python-comparisons.html

note that this has changed in Python 3.0, where both cmp() and
__cmp__() were removed.

Ondrej

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