8 .. index:: object: None
10 Note that the :ctype:`PyTypeObject` for ``None`` is not directly exposed in the
11 Python/C API. Since ``None`` is a singleton, testing for object identity (using
12 ``==`` in C) is sufficient. There is no :cfunc:`PyNone_Check` function for the
16 .. cvar:: PyObject* Py_None
18 The Python ``None`` object, denoting lack of value. This object has no methods.
19 It needs to be treated just like any other object with respect to reference
23 .. cmacro:: Py_RETURN_NONE
25 Properly handle returning :cdata:`Py_None` from within a C function.