Issue #20555: Use specific asserts in urllib, httplib, ftplib, cgi, wsgiref tests.
diff --git a/Lib/test/test_urllib.py b/Lib/test/test_urllib.py
index fa88b61..0032865 100644
--- a/Lib/test/test_urllib.py
+++ b/Lib/test/test_urllib.py
@@ -878,7 +878,7 @@
 #     def testTimeoutNone(self):
 #         # global default timeout is ignored
 #         import socket
-#         self.assertTrue(socket.getdefaulttimeout() is None)
+#         self.assertIsNone(socket.getdefaulttimeout())
 #         socket.setdefaulttimeout(30)
 #         try:
 #             ftp = urllib.ftpwrapper("myuser", "mypass", "localhost", 9093, [])
@@ -890,7 +890,7 @@
 #     def testTimeoutDefault(self):
 #         # global default timeout is used
 #         import socket
-#         self.assertTrue(socket.getdefaulttimeout() is None)
+#         self.assertIsNone(socket.getdefaulttimeout())
 #         socket.setdefaulttimeout(30)
 #         try:
 #             ftp = urllib.ftpwrapper("myuser", "mypass", "localhost", 9093, [])