diff --git a/lib/stormpy/__init__.py b/lib/stormpy/__init__.py
index d3c7e881b..901ad52b5 100644
--- a/lib/stormpy/__init__.py
+++ b/lib/stormpy/__init__.py
@@ -602,11 +602,11 @@ def parse_properties(properties, context=None, filters=None):
         if context.is_prism_program():
             return core.parse_properties_for_prism_program(properties, context.as_prism_program(), filters)
         else:
-            core.parse_properties_for_jani_program(properties, context.as_jani_model(), filters)
+            return core.parse_properties_for_jani_program(properties, context.as_jani_model(), filters)
     elif type(context) == storage.PrismProgram:
         return core.parse_properties_for_prism_program(properties, context, filters)
     elif type(context) == storage.JaniModel:
-        core.parse_properties_for_jani_model(properties, context, filters)
+        return core.parse_properties_for_jani_model(properties, context, filters)
     else:
         raise StormError("Unclear context. Please pass a symbolic model description")
 
diff --git a/src/storage/bitvector.cpp b/src/storage/bitvector.cpp
index 9718695e5..fa53f88c7 100644
--- a/src/storage/bitvector.cpp
+++ b/src/storage/bitvector.cpp
@@ -21,6 +21,7 @@ void define_bitvector(py::module& m) {
         .def("set", [](BitVector& b, uint_fast64_t i, bool v) {
                 b.set(i, v);
             }, py::arg("index"), py::arg("value") = true, "Set")
+        .def("as_int", &BitVector::getAsInt, py::arg("index"), py::arg("no_bits"), "Get as unsigned int")
 
         .def("__len__", [](BitVector const& b) { return b.size(); })
         .def("__getitem__", [](BitVector const& b, uint_fast64_t i) {
@@ -49,7 +50,9 @@ void define_bitvector(py::module& m) {
         .def(py::self |= py::self)
 
         .def("__str__", &streamToString<BitVector>)
-
+        .def("__hash__", [](const BitVector &b) {
+                return storm::storage::Murmur3BitVectorHash<uint64_t>()(b);
+            })
     ;
 
 }
diff --git a/src/storage/model.cpp b/src/storage/model.cpp
index d498ec430..60602acd9 100644
--- a/src/storage/model.cpp
+++ b/src/storage/model.cpp
@@ -209,6 +209,7 @@ void define_sparse_model(py::module& m, std::string const& vtSuffix) {
         .def("labels_state", &SparseModel<ValueType>::getLabelsOfState, py::arg("state"), "Get labels of state")
         .def_property_readonly("initial_states", &getSparseInitialStates<ValueType>, "Initial states")
         .def_property_readonly("initial_states_as_bitvector", [](SparseModel<ValueType> const& model) {return model.getInitialStates();})
+        .def("set_initial_states", &SparseModel<ValueType>::setInitialStates, py::arg("states"), "Set initial states")
         .def_property_readonly("states", [](SparseModel<ValueType>& model) {
                 return SparseModelStates<ValueType>(model);
             }, "Get states")