Index: output.py
===================================================================
--- output.py	(revision 250)
+++ output.py	(working copy)
@@ -422,6 +422,9 @@
     Hello!
     """

+    def __init__(self, *args, **kwargs):
+        pass
+
     def __call__(self, stream):
         for kind, data, pos in stream:
             if kind is TEXT: