[issue26421] string_richcompare invalid check Py_NotImplemented

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

PyDict_GetItem and lookdict_string use PyString_CheckExact for fast path. String subclasses are proceeded in general way. PyObject_GetAttr and string_richcompare use PyString_Check because they work with string and string subclasses. Py_TPFLAGS_STRING_SUBCLASS shouldn't be used if the type is not string subclass.

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resolution:  -> not a bug
stage:  -> resolved
status: open -> closed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue26421>
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