> Guido's patch breaks these tests:
> 
> test_descr test_hash test_long test_richcmp test_set

It looks like all these are easily fixed:  all these tests were making 
outdated assumptions and needed updating.

Here's a patch that fixes these tests.

One other detail:

In test_descr.py, there are tests for 'overridden behavior for static 
classes' and 'overridden behavior for dynamic classes', using test classes 
'Proxy' and 'DProxy';  apart from the name change, the 'dynamic' code is 
identical to the 'static' code, so I removed it.  I guess this had to do 
with the __dynamic__ class attribute, which is ancient history, no?