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python-3.7.4-docs-html/_sources/c-api/none.rst.txt

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+.. highlightlang:: c
+
+.. _noneobject:
+
+The ``None`` Object
+-------------------
+
+.. index:: object: None
+
+Note that the :c:type:`PyTypeObject` for ``None`` is not directly exposed in the
+Python/C API.  Since ``None`` is a singleton, testing for object identity (using
+``==`` in C) is sufficient. There is no :c:func:`PyNone_Check` function for the
+same reason.
+
+
+.. c:var:: PyObject* Py_None
+
+   The Python ``None`` object, denoting lack of value.  This object has no methods.
+   It needs to be treated just like any other object with respect to reference
+   counts.
+
+
+.. c:macro:: Py_RETURN_NONE
+
+   Properly handle returning :c:data:`Py_None` from within a C function (that is,
+   increment the reference count of ``None`` and return it.)