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_urllibnet.py b/Lib/test/test_urllibnet.py
index 63e061a..221b698 100644
--- a/Lib/test/test_urllibnet.py
+++ b/Lib/test/test_urllibnet.py
@@ -73,10 +73,10 @@
         # Test both readline and readlines.
         open_url = self.urlopen("http://www.python.org/")
         try:
-            self.assertTrue(isinstance(open_url.readline(), bytes),
-                         "readline did not return bytes")
-            self.assertTrue(isinstance(open_url.readlines(), list),
-                         "readlines did not return a list")
+            self.assertIsInstance(open_url.readline(), bytes,
+                                  "readline did not return a string")
+            self.assertIsInstance(open_url.readlines(), list,
+                                  "readlines did not return a list")
         finally:
             open_url.close()
 
@@ -87,9 +87,9 @@
             info_obj = open_url.info()
         finally:
             open_url.close()
-            self.assertTrue(isinstance(info_obj, email.message.Message),
-                         "object returned by 'info' is not an instance of "
-                         "email.message.Message")
+            self.assertIsInstance(info_obj, email.message.Message,
+                                  "object returned by 'info' is not an "
+                                  "instance of email.message.Message")
             self.assertEqual(info_obj.get_content_subtype(), "html")
 
     def test_geturl(self):
@@ -177,8 +177,8 @@
         # Make sure header returned as 2nd value from urlretrieve is good.
         file_location, header = self.urlretrieve("http://www.python.org/")
         os.unlink(file_location)
-        self.assertTrue(isinstance(header, email.message.Message),
-                     "header is not an instance of email.message.Message")
+        self.assertIsInstance(header, email.message.Message,
+                              "header is not an instance of email.message.Message")