python_doc_md/Advanced/c-api/none.md

The None Object {#noneobject}

::: index pair: object; None :::

Note that the PyTypeObject{.interpreted-text role="c:type"} 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{.interpreted-text role="c:func"} function for the same reason.

The Python None object, denoting lack of value. This object has no methods and is immortal{.interpreted-text role="term"}.

::: versionchanged 3.12 Py_None{.interpreted-text role="c:data"} is immortal{.interpreted-text role="term"}. :::

Return Py_None{.interpreted-text role="c:data"} from a function.