bpo-40275: Use new test.support helper submodules in tests (GH-21451)
diff --git a/Lib/test/test_pipes.py b/Lib/test/test_pipes.py
index 1d538b9..7d8cd54 100644
--- a/Lib/test/test_pipes.py
+++ b/Lib/test/test_pipes.py
@@ -3,7 +3,9 @@
import string
import unittest
import shutil
-from test.support import TESTFN, run_unittest, unlink, reap_children
+from test.support import run_unittest, reap_children
+from test.support.os_helper import TESTFN, unlink
+
if os.name != 'posix':
raise unittest.SkipTest('pipes module only works on posix')