diff --git a/src/Plugins/SimplnxCore/wrapping/python/simplnxpy.cpp b/src/Plugins/SimplnxCore/wrapping/python/simplnxpy.cpp
index 31ba14ae22..80cfc6663f 100644
--- a/src/Plugins/SimplnxCore/wrapping/python/simplnxpy.cpp
+++ b/src/Plugins/SimplnxCore/wrapping/python/simplnxpy.cpp
@@ -836,12 +836,9 @@ PYBIND11_MODULE(simplnx, mod)
 
   py::class_<AttributeMatrix, BaseGroup, std::shared_ptr<AttributeMatrix>> attributeMatrix(mod, "AttributeMatrix");
   attributeMatrix.def("resize_tuples", &AttributeMatrix::resizeTuples, "Resize the tuples with the given shape");
-  attributeMatrix.def("tuple_shape", &AttributeMatrix::getShape, "Returns the Tuple dimensions of the AttributeMatrix");
-  attributeMatrix.def("__len__", &AttributeMatrix::getNumTuples, "Returns the total number of tuples");
+  attributeMatrix.def_property_readonly("tuple_shape", &AttributeMatrix::getShape, "Returns the Tuple dimensions of the AttributeMatrix");
   attributeMatrix.def_property_readonly("size", &AttributeMatrix::getNumTuples, "Returns the total number of tuples");
 
-  baseGroup.def("", &BaseGroup::getSize);
-
   py::class_<IArray, DataObject, std::shared_ptr<IArray>> iArray(mod, "IArray");
   iArray.def_property_readonly("tuple_shape", &IArray::getTupleShape);
   iArray.def_property_readonly("component_shape", &IArray::getComponentShape);