[3.12] gh-115341: Fix loading unit tests with doctests in -OO mode (GH-115342) (GH...

(cherry picked from commit 872cc9957a9c8b971448e7377fad865f351da6c9)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

diff --git a/Lib/doctest.py b/Lib/doctest.py
index cda2f5a06b270e5b77eb533469178161726ae05c..696bb966549255038eef9bec12d79846cf592c6a 100644 (file)
--- a/Lib/doctest.py
+++ b/Lib/doctest.py
@@ -2203,13 +2203,13 @@ class DocTestCase(unittest.TestCase):
         unittest.TestCase.__init__(self)
         self._dt_optionflags = optionflags
         self._dt_checker = checker
-        self._dt_globs = test.globs.copy()
         self._dt_test = test
         self._dt_setUp = setUp
         self._dt_tearDown = tearDown
 
     def setUp(self):
         test = self._dt_test
+        self._dt_globs = test.globs.copy()
 
         if self._dt_setUp is not None:
             self._dt_setUp(test)