The ``None`` Object

.. highlight:: c

.. _noneobject:

The None Object

.. index:: pair: 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 and is :term:immortal.

.. versionchanged:: 3.12 :c:data:Py_None is :term:immortal.

.. c:macro:: Py_RETURN_NONE

Return :c:data:Py_None from a function.