Eric Snow added the comment: Looks like a case where the concrete dict API is ignoring subtype implementations.
In your example the attribute access will be handled by a LOAD_ATTR which calls PyObject_GetAttr() (Python/ceval.c:2369). That ends up calling PyFunction_Type.tp_getattro (inherited from PyBaseObject_Type). That ends up just being PyObject_GenericGetAttr() (Objects/object.c:1061). The dict gets pulled from foo using PyFunction_Type.->tp_dictoffset and then PyDict_GetItem() gets called on it. Unfortunately, PyDict_GetItem() is hard-coded to the dict implementation. At this point your __getitem__() has been entirely circumvented! FYI, this is a pain point for myself right now so it's been on my mind (COrderedDict and kwargs). This came up in 2011. See issue 10977. ---------- nosy: +eric.snow _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue16894> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
