Lookup attr in class if obj doesn't have it

src/CPPInstance.cxx

@@ -838,6 +838,32 @@ static PyObject* op_str(CPPInstance* self)
     return op_repr(self);
 }
 
+//----------------------------------------------------------------------------
+static PyObject* op_getattro(PyObject* pyobj, PyObject* pyname)
+{
+// Check if we can access the attribute at the object level
+    PyObject* attr = PyObject_GenericGetAttr(pyobj, pyname);
+    if (attr)
+        return attr;
+
+// If it's not AttributeError the attribute was found and something else failed
+    if (!PyErr_ExceptionMatches(PyExc_AttributeError))
+        return nullptr;
+
+// Keep the error aside to be used in case lookup on class level fails
+    PyObject* pytype = 0, *pyvalue = 0, *pytrace = 0;
+    PyErr_Fetch(&pytype, &pyvalue, &pytrace);
+
+// Perform a class level lookup for statics, enums etc.
+    CPPClass* klass = (CPPClass*)Py_TYPE(pyobj);
+    attr = PyObject_GetAttr((PyObject*)klass, pyname);
+    if (attr)
+        return attr;
+
+    PyErr_Restore(pytype, pyvalue, pytrace);
+    return nullptr;
+}
+
 //-----------------------------------------------------------------------------
 static PyObject* op_getownership(CPPInstance* pyobj, void*)
 {
@@ -1030,7 +1056,7 @@ PyTypeObject CPPInstance_Type = {
     (hashfunc)op_hash,             // tp_hash
     0,                             // tp_call
     (reprfunc)op_str,              // tp_str
-    0,                             // tp_getattro
+    (getattrofunc)op_getattro,     // tp_getattro
     0,                             // tp_setattro
     0,                             // tp_as_buffer
     Py_TPFLAGS_DEFAULT |