--- a/contrib/synthrepo.py	Mon May 16 21:30:32 2016 +0000
+++ b/contrib/synthrepo.py	Mon May 16 21:30:53 2016 +0000
@@ -507,7 +507,7 @@
             head = rename(head)
         else:
             head = ''
-        renamed = os.path.join(head, wordgen.next())
+        renamed = os.path.join(head, next(wordgen))
         replacements[dirpath] = renamed
         return renamed
     result = []