Function PyImport_ImportModuleAttrString 

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

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