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Last change
on this file was 391, checked in by dmik, 11 years ago |
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python: Merge vendor 2.7.6 to trunk.
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Property svn:eol-style
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native
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File size:
689 bytes
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| [2] | 1 | .. highlightlang:: c
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| 2 |
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| 3 | .. _noneobject:
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| 4 |
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| 5 | The None Object
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| 6 | ---------------
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| 7 |
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| 8 | .. index:: object: None
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| 9 |
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| [391] | 10 | Note that the :c:type:`PyTypeObject` for ``None`` is not directly exposed in the
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| [2] | 11 | Python/C API. Since ``None`` is a singleton, testing for object identity (using
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| [391] | 12 | ``==`` in C) is sufficient. There is no :c:func:`PyNone_Check` function for the
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| [2] | 13 | same reason.
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| 14 |
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| 15 |
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| [391] | 16 | .. c:var:: PyObject* Py_None
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| [2] | 17 |
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| 18 | The Python ``None`` object, denoting lack of value. This object has no methods.
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| 19 | It needs to be treated just like any other object with respect to reference
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| 20 | counts.
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| 21 |
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| 22 |
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| [391] | 23 | .. c:macro:: Py_RETURN_NONE
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| [2] | 24 |
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| [391] | 25 | Properly handle returning :c:data:`Py_None` from within a C function.
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| [2] | 26 |
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| 27 | .. versionadded:: 2.4
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| 28 |
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