Fix warning issue kw_only.

python_binding/operator/pybind_GenericOperator.cpp

@@ -52,6 +52,6 @@ void init_GenericOperator(py::module& m) {
             }
             return genericNode;
         }
-    , py::arg("type"), py::arg("nb_data"), py::arg("nb_param"), py::arg("nb_out"), py::arg("name") = "");
+    , py::arg("type"), py::arg("nb_data"), py::arg("nb_param"), py::arg("nb_out"), py::arg("name") = "", py::kw_only());
 }
 }  // namespace Aidge