[Python-Dev] PyDict_Get/SetItem and dict subclasses

Benjamin Peterson benjamin at python.org
Sat Nov 5 17:34:47 CET 2011

2011/11/5 Victor Stinner <victor.stinner at haypocalc.com>:
> Hi,
> PyDict_GetItem() and PyDict_SetItem() 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.


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