diff --git a/Lib/test/test_ast/test_ast.py b/Lib/test/test_ast/test_ast.py
index 1e6f60074308e2..cedffbb0a2e346 100644
--- a/Lib/test/test_ast/test_ast.py
+++ b/Lib/test/test_ast/test_ast.py
@@ -1,7 +1,6 @@
 import _ast_unparse
 import ast
 import builtins
-import contextlib
 import copy
 import dis
 import enum
@@ -14,7 +13,6 @@
 import types
 import unittest
 import weakref
-from io import StringIO
 from pathlib import Path
 from textwrap import dedent
 try:
@@ -3417,11 +3415,9 @@ def set_source(self, content):
         Path(self.filename).write_text(self.text_normalize(content))
 
     def invoke_ast(self, *flags):
-        stderr = StringIO()
-        stdout = StringIO()
         with (
-            contextlib.redirect_stdout(stdout),
-            contextlib.redirect_stderr(stderr),
+            support.captured_stdout() as stdout,
+            support.captured_stderr() as stderr,
         ):
             ast.main(args=[*flags, self.filename])
         self.assertEqual(stderr.getvalue(), '')
@@ -3462,9 +3458,8 @@ def f(x: int) -> int:
     def test_help_message(self):
         for flag in ('-h', '--help', '--unknown'):
             with self.subTest(flag=flag):
-                output = StringIO()
                 with self.assertRaises(SystemExit):
-                    with contextlib.redirect_stderr(output):
+                    with support.captured_stderr() as output:
                         ast.main(args=flag)
                 self.assertStartsWith(output.getvalue(), 'usage: ')
 
diff --git a/Lib/test/test_pickle.py b/Lib/test/test_pickle.py
index e2384b33345a45..b24d865b1b8b5c 100644
--- a/Lib/test/test_pickle.py
+++ b/Lib/test/test_pickle.py
@@ -2,7 +2,6 @@
                             NAME_MAPPING, REVERSE_NAME_MAPPING)
 import builtins
 import collections
-import contextlib
 import io
 import pickle
 import struct
@@ -728,8 +727,7 @@ def set_pickle_data(self, data):
             pickle.dump(data, f)
 
     def invoke_pickle(self, *flags):
-        output = io.StringIO()
-        with contextlib.redirect_stdout(output):
+        with support.captured_stdout() as output:
             pickle._main(args=[*flags, self.filename])
         return self.text_normalize(output.getvalue())
 
@@ -754,10 +752,9 @@ def test_invocation(self):
 
     @support.force_not_colorized
     def test_unknown_flag(self):
-        stderr = io.StringIO()
         with self.assertRaises(SystemExit):
             # check that the parser help is shown
-            with contextlib.redirect_stderr(stderr):
+            with support.captured_stderr() as stderr:
                 _ = self.invoke_pickle('--unknown')
         self.assertStartsWith(stderr.getvalue(), 'usage: ')
 
diff --git a/Lib/test/test_tokenize.py b/Lib/test/test_tokenize.py
index 865e0c5b40ddd3..92a0510ddf0b03 100644
--- a/Lib/test/test_tokenize.py
+++ b/Lib/test/test_tokenize.py
@@ -1,4 +1,3 @@
-import contextlib
 import itertools
 import os
 import re
@@ -3181,8 +3180,7 @@ def set_source(self, content):
             fp.write(content)
 
     def invoke_tokenize(self, *flags):
-        output = StringIO()
-        with contextlib.redirect_stdout(output):
+        with support.captured_stdout() as output:
             tokenize._main(args=[*flags, self.filename])
         return self.text_normalize(output.getvalue())
 
@@ -3209,7 +3207,7 @@ def f():
 
         with self.assertRaises(SystemExit):
             # suppress argparse error message
-            with contextlib.redirect_stderr(StringIO()):
+            with support.captured_stderr():
                 _ = self.invoke_tokenize('--unknown')
 
     def test_without_flag(self):