Index: pyyaml/trunk/lib/yaml/events.py
===================================================================
--- pyyaml/trunk/lib/yaml/events.py	(revision 137)
+++ pyyaml/trunk/lib/yaml/events.py	(revision 222)
@@ -2,5 +2,5 @@
 # Abstract classes.
 
-class Event:
+class Event(object):
     def __init__(self, start_mark=None, end_mark=None):
         self.start_mark = start_mark