Current File : //proc/self/root/proc/self/root/usr/share/doc/python-docs-2.7.5/html/_sources/c-api/none.txt
.. 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.
.. versionadded:: 2.4
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