2010/8/23 Guido van Rossum guido@python.org:
Changing C APIs is even harder than changing Python API because you can't add exceptions to something that wasn't returning exceptions before. We did that for comparisons in the past and it was a pain (but worth it). For these two little APIs I think it is not worth it, though it may be worth it to create new APIs that *do* return exceptions.
+1 I propose we add PyObject_HasattrWithErrors to parallel PyDict_GetItemWithErrors.