Index: python-pyflow/pyflow/src/pyflow.py
===================================================================
--- python-pyflow.orig/pyflow/src/pyflow.py
+++ python-pyflow/pyflow/src/pyflow.py
@@ -3492,7 +3492,7 @@ class WorkflowRunner(object) :
             except KeyboardInterrupt:
                 msg = "Keyboard Interrupt, shutting down running tasks..."
                 self._killWorkflow(msg)
-            except DataDirException, e:
+            except DataDirException(e):
                 # Special exception for when pyflow directory can't be initialized.
                 # A killWorkflow is not needed for this case, because no workflow
                 # could be started.