With these changes, the optparse test successfully runs!
It outputs a slightly different thing for us, since it
looks at the str of obj.__dict__, which for us is currently
an AttrWrapper.

I think this case is benign, so I'm hopeful that we'll be able
to keep __dict__ as an AttrWrapper and not as a full dict
(which would require deoptimizing that object and/or tracking
the existence of that dict to see if we can reoptimize).
I'm not sure if we'll be able to, but there's only one way to find out.