status of Programming by Contract (PEP 316)?

[Russ]

I just stumbled onto PEP 316: Programming by Contract for Python
(http://www.python.org/dev/peps/pep-0316/). This would be a great
addition to Python, but I see that it was submitted way back in 2003,
and its status is "deferred." I did a quick search on
comp.lang.python,
but I don't seem to see much on it. Does anyone know what the real
status is of getting this into standard Python? Thanks.