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/test_zlib.py b/Lib/test/test_zlib.py
index 776557e..bf1e639 100644
--- a/Lib/test/test_zlib.py
+++ b/Lib/test/test_zlib.py
@@ -174,7 +174,7 @@
 
         decombuf = zlib.decompress(combuf)
         # Test type of return value
-        self.assertTrue(isinstance(decombuf, bytes))
+        self.assertIsInstance(decombuf, bytes)
 
         self.assertEqual(data, decombuf)
 
@@ -373,7 +373,7 @@
             data = HAMLET_SCENE
             comp = zlib.compress(data)
             # Test type of return value
-            self.assertTrue(isinstance(comp, bytes))
+            self.assertIsInstance(comp, bytes)
 
             d0 = zlib.decompressobj()
             bufs0 = []