Function PyImport_ImportModuleAttr 

pub unsafe extern "C" fn PyImport_ImportModuleAttr(
    mod_name: *mut PyObject,
    attr_name: *mut PyObject,
) -> *mut PyObject

Available on Py_3_14 and (Py_3_14 or non-PyPy) and neither Py_LIMITED_API nor RustPython only.