fix possible error

ec99568c · Benjamin Peterson · fa1e21cf · ec99568c
Kaydet (Commit) ec99568c authored Agu 19, 2008 tarafından Benjamin Peterson
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test_threading.py Lib/test/test_threading.py +4 -1

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--- a/Lib/test/test_threading.py
+++ b/Lib/test/test_threading.py
@@ -329,7 +329,10 @@ class ThreadTests(unittest.TestCase):

        t = threading.Thread()
        with catch_warning() as w:
-            del threading.__warningregistry__
+            try:
+                del threading.__warningregistry__
+            except AttributeError:
+                pass
            msg = "isDaemon() is deprecated in favor of the " \
                  "Thread.daemon property"
            check(t.isDaemon(), w, msg)