Merge pull request #1794 from DKilkenny/show_progress_error

Fixed show_progress error

openmdao/core/problem.py

@@ -1471,6 +1471,9 @@ def check_totals(self, of=None, wrt=None, out_stream=_DEFAULT_OUT_STREAM, compac
             For 'rel error', 'abs error', 'magnitude' the value is: A tuple containing norms for
                 forward - fd, adjoint - fd, forward - adjoint.
         """
+        if out_stream == _DEFAULT_OUT_STREAM:
+            out_stream = sys.stdout
+
         if self._metadata['setup_status'] < _SetupStatus.POST_FINAL_SETUP:
             raise RuntimeError(self.msginfo + ": run_model must be called before total "
                                "derivatives can be checked.")

openmdao/core/tests/test_check_derivs.py

@@ -18,7 +18,8 @@
 from openmdao.test_suite.components.simple_comps import DoubleArrayComp
 from openmdao.test_suite.components.array_comp import ArrayComp
 from openmdao.test_suite.groups.parallel_groups import FanInSubbedIDVC, Diamond
-from openmdao.utils.assert_utils import assert_near_equal, assert_warning, assert_check_partials
+from openmdao.utils.assert_utils import assert_near_equal, assert_warning, assert_check_partials, \
+    assert_no_warning
 from openmdao.utils.mpi import MPI
 
 try:
@@ -2586,6 +2587,8 @@ def test_check_totals_show_progress(self):
         lines = stream.getvalue()
         self.assertFalse("Checking derivatives with respect to" in lines)
 
+        prob.check_totals(method='fd', show_progress=True)
+
     def test_desvar_as_obj(self):
         prob = om.Problem()
         prob.model = SellarDerivatives()