[Python-Dev] operator precedence of __eq__, __ne__, etc, if both object have implementations

[Eric Smith]

skip at pobox.com wrote:
>     Dino> For IronPython we wrote a set of tests which go through and define
>     Dino> the various operator methods in all sorts of combinations on both
>     Dino> new-style and old-style classes as well as subclasses of those
>     Dino> classes and then do the comparisons w/ logging.
> 
> It would be very nice if these complex corner cases had a set of test
> cases which could be run by all implementations (CPython, Jython,
> IronPython, PyPy, etc).  I don't know.  Maybe the CPython test suite serves
> that purpose, but it seems like it would be helpful if this sort of
> "validation suite" was maintained as a separate project all implementations
> could use and contribute to.

IIRC, one of the reasons for "breaking out"[1] the standard library (and 
its test suite) was to allow for things like this.

Eric.

[1] For whatever definition "breaking out" ends up having.