Added function to specify a specific workflow based on module name.

fluents/workflow.py

@@ -46,6 +46,21 @@ def workflow_list():
         
     return retval
 
+def find_workflow(basename):
+    """Searches for a workflow with a given filename."""
+    print "find_workflow"
+    
+    # List all .py files that can contain workflow classes
+    wf_path = sys.path
+    wf_file = None
+
+    for dir in wf_path:
+        fn = os.path.join(dir, "%s.py" % basename)
+        if os.path.isfile(fn):
+            wf_file = fn
+            return _workflow_classes(basename)[0]
+
+    return None
 
 class Workflow:
     """Defines a workflow that contains a set of analysis stages.