GH-122616: Simplify LOAD_ATTR_WITH_HINT and STORE_ATTR_WITH_HINT by markshannon · Pull Request #122620 · python/cpython

bedevere-app

A somewhat mysterious bug report (a failure with a Python exception) that we received in Cython under Py3.14a1 bisects to this change:
cython/cython#6426 (comment)
Apparently, it introduced a behavioural change where some object attributes are set to (or read as) None (or possibly their super class default value, i.e. not set at all) instead of the expected value. Note that this is in plain Python code when running Cython to translate one of its modules, running python cython.py Cython/Compiler/Parsing.py from a source checkout.