+#
+#
+
# Copyright (C) 2007 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# 02110-1301, USA.
+"""Error definitions for QA.
+
+"""
+
+
class Error(Exception):
"""An error occurred during Q&A testing.
"""
pass
+
+
+class UnusableNodeError(Error):
+ """Unusable node.
+
+ """
+ pass