Issue1990

i.e.:

class Foo(object):
    class bar(object):
        bat = "hi"

from operator import attrgetter

print attrgetter("bar.bat")(Foo)

this is a pure Python workaround:

    def dottedgetter(attr):
        def g(obj):
            for name in attr.split("."):
                obj = getattr(obj, name)
            return obj
        return g

This is fixed in the default branch - I'm not exactly sure when it was fixed :) The upcoming beta1 release will have the fix included.