--- a/setup.py	Tue Mar 19 16:56:46 2013 +0100
+++ b/setup.py	Wed Mar 20 17:40:25 2013 +0100
@@ -129,7 +129,7 @@
                 shutil.copy2(src, dest)
     try:
         os.mkdir(to_dir)
-    except OSError, ex:
+    except OSError as ex:
         # file exists ?
         import errno
         if ex.errno != errno.EEXIST: