[Python-Dev] PyDict_Get/SetItem and dict subclasses (original) (raw)
Benjamin Peterson benjamin at python.org
Sat Nov 5 17:34:47 CET 2011
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2011/11/5 Victor Stinner <victor.stinner at haypocalc.com>:
Hi,
PyDictGetItem() and PyDictSetItem() don't call getitem and setitem for dict subclasses. Is there a reason for that?
It's the same reason that PyUnicode_Concat doesn't call add on unicode subclasses or PyList_Append doesn't call "append" on list subclasses. It's a concrete API. Code which expects subclasses should use PyObject_GetItem and friends, the abstract API.
-- Regards, Benjamin
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