From 4817064d5b2adbfdc83e2cce4bed4dbb40ff8d79 Mon Sep 17 00:00:00 2001 From: Herb Schilling Date: Mon, 17 Aug 2020 08:09:32 -0400 Subject: [PATCH] fixed equality test for _UNDEFINED --- openmdao/visualization/n2_viewer/n2_viewer.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/openmdao/visualization/n2_viewer/n2_viewer.py b/openmdao/visualization/n2_viewer/n2_viewer.py index 0a1b411742..424da8d821 100644 --- a/openmdao/visualization/n2_viewer/n2_viewer.py +++ b/openmdao/visualization/n2_viewer/n2_viewer.py @@ -197,7 +197,7 @@ def _get_tree_dict(system, component_execution_orders, component_execution_index if k in ['linear_solver', 'nonlinear_solver']: options[k] = system.options[k].SOLVER else: - if system.options._dict[k]['value'] == _UNDEFINED: + if system.options._dict[k]['value'] is _UNDEFINED: options[k] = str(system.options._dict[k]['value']) else: options[k] = system.options._dict[k]['value']