Fixed case issue

python_binding/utils/pybind_Attributes.cpp

@@ -31,7 +31,7 @@ DynamicAttributes test_DynamicAttributes_binding() {
 }
 
 double test_DynamicAttributes_binding_check(DynamicAttributes& attrs) {
-    return attrs.getAttr<double>("D");
+    return attrs.getAttr<double>("d");
 }
 
 void init_Attributes(py::module& m){