Make mq resilient to tuple keys.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@2480 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/client/mq.py

@@ -283,11 +283,10 @@ class MQ(object):
                 del self._cache_buffers[data.level][data.element]
                 self._evict(key)
                 return
-        raise KeyError, "%s was not found in the cache" % key
+        raise KeyError, "%s was not found in the cache" % (key, )
 
     __delitem__ = invalidate
 
-
 # Here is a test.
 if __name__ == '__main__':
     import hotshot, hotshot.stats