Message11010

Rewriting PyType.getAbstractmethods to

    public PyObject getAbstractmethods() {
        PyObject result = dict.__finditem__("__abstractmethods__");
        if (result == null || result instanceof PyDataDescr) {
            noAttributeError("__abstractmethods__");
        }
        return result;
    }

i.e. inserting ' || result instanceof PyDataDescr'
seems to solve it. I also checked other magic attributes (e.g. __module__) that are backed by getset_descriptors and __abstractmethods__ seems to be the only one that behaves differently from CPython, so this special-case-fix should be ultimate for the whole issue.

typing.py imports fine with the described fixes. Just running regrtests right now - fingers crossed.
Also: I suppose there were several newer versions of typing.py even for Python 2.7 than I tested with. So I will also investigate these, but suppose this issue is basically done now.