None 物件

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 and is immortal.

在 3.12 版的變更: Py_None 為不滅的 (immortal)。

Py_RETURN_NONE

Return Py_None from a function.