Merged revisions 77727 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r77727 | ezio.melotti | 2010-01-24 18:58:36 +0200 (Sun, 24 Jan 2010) | 1 line

  use assert[Not]IsInstance where appropriate
........
diff --git a/Lib/test/pickletester.py b/Lib/test/pickletester.py
index dc1d156..79407a6 100644
--- a/Lib/test/pickletester.py
+++ b/Lib/test/pickletester.py
@@ -832,7 +832,7 @@
         x = dict.fromkeys(range(n))
         for proto in protocols:
             s = self.dumps(x, proto)
-            assert isinstance(s, bytes_types)
+            self.assertIsInstance(s, bytes_types)
             y = self.loads(s)
             self.assertEqual(x, y)
             num_setitems = count_opcode(pickle.SETITEMS, s)