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Tip revision: 33b2d786e704b1e929fef8aeab9ab840ce840a07 authored by Benjamin Peterson on 03 December 2016, 20:38:47 UTC
python 2.7.13rc1
python 2.7.13rc1
Tip revision: 33b2d78
none.rst
.. 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