Index: pyyaml/trunk/tests/lib/test_appliance.py
===================================================================
--- pyyaml/trunk/tests/test_appliance.py	(revision 325)
+++ pyyaml/trunk/tests/lib/test_appliance.py	(revision 330)
@@ -24,4 +24,6 @@
         if os.path.isfile(os.path.join(directory, filename)):
             base, ext = os.path.splitext(filename)
+            if base.endswith('-py3'):
+                continue
             filenames.setdefault(base, []).append(ext)
     filenames = filenames.items()