The None Object — Python documentation
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Python/docs/3.8/c-api/none
The None Object
Note that the 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 PyNone_Check()
function for the same reason.
- 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.
- Py_RETURN_NONE
- Properly handle returning Py_None from within a C function (that is, increment the reference count of
None
and return it.)