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.

The Python None object, denoting lack of value. This object has no methods and is immortal.

3.12 Py_None is immortal.

Return Py_None from a function.