The PEP 239 is Rejected (http://www.python.org/dev/peps/pep-0239/).

If a Rational data type would be included in the stdlib, my
recommendation is that first that PEP would be reopened and pushed until
get accepted.

Also, note the kind of questions Mark is asking here: the analysis and
answer of those questions belongs to a PEP, not to a patch. We risk to
not be very rational (1/2 wink) in these decisions.

I'd close this patch as Rejected (as for the PEP), at least until the
PEP gets accepted (if ever).