draw_graph() method is executed with try-except.

Author: shtaxxx

examples/dataflow_example/dataflow_example.py

@@ -47,7 +47,10 @@ def mkMultAdd():
     df.make_always()
 
     # draw dataflow graph in png
-    df.draw_graph()
+    try:
+        df.draw_graph()
+    except:
+        print('Dataflow graph could not be generated.')
 
     return m
 

tests/lib_dataflow_/draw_graph/lib_dataflow_draw_graph.py

@@ -32,7 +32,10 @@ def mkLed():
 
     df.make_always()
 
-    df.draw_graph('out.png')
+    try:
+        df.draw_graph()
+    except:
+        print('Dataflow graph could not be generated.')
 
     return m