_new_backup_path: fix TypeError, bug #453892

diff --git a/pym/portage/dbapi/vartree.py b/pym/portage/dbapi/vartree.py
index 20a114bdad27195750d026fbe589db1a80462bcd..bbcf61c9f970c055c5f7c696378ee465da9cae97 100644 (file)
--- a/pym/portage/dbapi/vartree.py
+++ b/pym/portage/dbapi/vartree.py
@@ -4222,7 +4222,7 @@ class dblink(object):
                x = -1
                while True:
                        x += 1
-                       backup_p = p + '.backup.' + str(x).rjust(4, '0')
+                       backup_p = '%s.backup.%04d' % (p, x)
                        try:
                                os.lstat(backup_p)
                        except OSError: