[PATCH stabe-2.12 2/2] Fix string formatting in private object representation

['Lisa Velden' via ganeti-devel]

and use one-element tuplesfor string formatting

Signed-off-by: Lisa Velden <vel...@google.com>
---
 lib/serializer.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/serializer.py b/lib/serializer.py
index b4d5631..38fe841 100644
--- a/lib/serializer.py
+++ b/lib/serializer.py
@@ -253,10 +253,10 @@ class Private(object):
     return self._item
 
   def __str__(self):
-    return "<%s>" % self._descr
+    return "<%s>" % (self._descr, )
 
   def __repr__(self):
-    return "Private(?, descr=%r)" % self._descr
+    return "Private(?, descr=%r)" % (self._descr, )
 
   # pylint: disable=W0212
   # If it doesn't access _item directly, the call will go through __getattr__
@@ -280,7 +280,7 @@ class Private(object):
 
   def __call__(self, *args, **kwargs):
     return Private(self._item(*args, **kwargs),
-                   descr="%s()" % self._descr)
+                   descr="%s()" % (self._descr, ))
 
   # pylint: disable=R0201
   # While this could get away with being a function, it needs to be a method.
-- 
2.2.0.rc0.207.ga3a616c