Function _PyEval_RequestCodeExtraIndex 

pub unsafe extern "C" fn _PyEval_RequestCodeExtraIndex(
    func: freefunc,
) -> Py_ssize_t

👎Deprecated since 0.29.0:

renamed to PyUnstable_Eval_RequestCodeExtraIndex

Available on neither Py_LIMITED_API nor RustPython and non-PyPy only.