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-rw-r--r--Lib/test/_test_multiprocessing.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py
index d88cd07..c00846c 100644
--- a/Lib/test/_test_multiprocessing.py
+++ b/Lib/test/_test_multiprocessing.py
@@ -3857,7 +3857,7 @@ class TestSemaphoreTracker(unittest.TestCase):
p.stderr.close()
expected = 'semaphore_tracker: There appear to be 2 leaked semaphores'
self.assertRegex(err, expected)
- self.assertRegex(err, 'semaphore_tracker: %r: \[Errno' % name1)
+ self.assertRegex(err, r'semaphore_tracker: %r: \[Errno' % name1)
#
# Mixins