some type clearification

src/App/FeaturePython.cpp

@@ -54,7 +54,7 @@ DocumentObjectExecReturn *FeaturePythonImp::execute()
             Py::Object feature = static_cast<PropertyPythonObject*>(proxy)->getValue();
             if (feature.hasAttr("__object__")) {
                 Py::Callable method(feature.getAttr(std::string("execute")));
-                Py::Tuple args(0);
+				Py::Tuple args;
                 method.apply(args);
             }
             else {

src/App/PropertyPythonObject.cpp

@@ -89,7 +89,7 @@ std::string PropertyPythonObject::toString() const
         Py::Callable method(pickle.getAttr(std::string("dumps")));
         Py::Object dump;
         if (this->object.hasAttr("__getstate__")) {
-            Py::Tuple args(0);
+			Py::Tuple args;
             Py::Callable state(this->object.getAttr("__getstate__"));
             dump = state.apply(args);
         }