https://github.com/python/cpython
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Tip revision: 6c003210943fc91e5911bcbabe1fe4b0030cf38b authored by Benjamin Peterson on 15 October 2014, 22:07:54 UTC
goodbye, 2.6
goodbye, 2.6
Tip revision: 6c00321
none.rst
.. highlightlang:: c
.. _noneobject:
The None Object
---------------
.. index:: object: None
Note that the :ctype:`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 :cfunc:`PyNone_Check` function for the
same reason.
.. cvar:: 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.
.. cmacro:: Py_RETURN_NONE
Properly handle returning :cdata:`Py_None` from within a C function.
.. versionadded:: 2.4