Index: Lib/test/regrtest.py
===================================================================
--- Lib/test/regrtest.py	(revision 77361)
+++ Lib/test/regrtest.py	(working copy)
@@ -150,7 +150,6 @@
 import cStringIO
 import getopt
 import itertools
-import json
 import os
 import random
 import re
@@ -160,15 +159,13 @@
 import warnings
 import unittest
 
-# I see no other way to suppress these warnings;
-# putting them in test_grammar.py has no effect:
-warnings.filterwarnings("ignore", "hex/oct constants", FutureWarning,
-                        ".*test.test_grammar$")
-if sys.maxint > 0x7fffffff:
-    # Also suppress them in <string>, because for 64-bit platforms,
-    # that's where test_grammar.py hides them.
-    warnings.filterwarnings("ignore", "hex/oct constants", FutureWarning,
-                            "<string>")
+with warnings.catch_warnings():
+    # Silence Py3k warnings
+    warnings.filterwarnings("ignore", "tuple parameter unpacking "
+                            "has been removed", SyntaxWarning)
+    warnings.filterwarnings("ignore", "assignment to True or False "
+                            "is forbidden", SyntaxWarning)
+    import json
 
 # Ignore ImportWarnings that only occur in the source tree,
 # (because of modules with the same name as source-directories in Modules/)
Index: Lib/test/test_json.py
===================================================================
--- Lib/test/test_json.py	(revision 77361)
+++ Lib/test/test_json.py	(working copy)
@@ -7,10 +7,15 @@
 
 import json.tests
 import test.test_support
+import warnings
 
 
 def test_main():
-    test.test_support.run_unittest(json.tests.test_suite())
+    with warnings.catch_warnings():
+        # Silence Py3k warning
+        warnings.filterwarnings("ignore", "comparing unequal types "
+                                "not supported", DeprecationWarning)
+        test.test_support.run_unittest(json.tests.test_suite())
 
 
 if __name__ == "__main__":
Index: Lib/test/test_sqlite.py
===================================================================
--- Lib/test/test_sqlite.py	(revision 77361)
+++ Lib/test/test_sqlite.py	(working copy)
@@ -4,14 +4,21 @@
 # Skip test if _sqlite3 module was not built.
 import_module('_sqlite3')
 
+import warnings
 from sqlite3.test import (dbapi, types, userfunctions, py25tests,
                                 factory, transactions, hooks, regression,
                                 dump)
 
 def test_main():
-    run_unittest(dbapi.suite(), types.suite(), userfunctions.suite(),
-                 py25tests.suite(), factory.suite(), transactions.suite(),
-                 hooks.suite(), regression.suite(), dump.suite())
+    with warnings.catch_warnings():
+        # Silence Py3k warnings
+        warnings.filterwarnings("ignore", "buffer.. not supported",
+                                DeprecationWarning)
+        warnings.filterwarnings("ignore", "classic int division",
+                                DeprecationWarning)
+        run_unittest(dbapi.suite(), types.suite(), userfunctions.suite(),
+                     py25tests.suite(), factory.suite(), transactions.suite(),
+                     hooks.suite(), regression.suite(), dump.suite())
 
 if __name__ == "__main__":
     test_main()