Index: pyyaml/trunk/lib/yaml/resolver.py
===================================================================
--- pyyaml/trunk/lib/yaml/resolver.py	(revision 158)
+++ pyyaml/trunk/lib/yaml/resolver.py	(revision 222)
@@ -10,5 +10,5 @@
     pass
 
-class BaseResolver:
+class BaseResolver(object):
 
     DEFAULT_SCALAR_TAG = u'tag:yaml.org,2002:str'