gh-126349: test_turtle: Add cleanup to avoid reference leaks (GH-129079)

diff --git a/Lib/test/test_turtle.py b/Lib/test/test_turtle.py
index de6508ff8c791df4152ad235c07f6c5a56c36b13..d02cac284a909acb2661fbd6cfa1c4895a659f0d 100644 (file)
--- a/Lib/test/test_turtle.py
+++ b/Lib/test/test_turtle.py
@@ -570,6 +570,9 @@ class TestTurtle(unittest.TestCase):
         with patch_screen():
             self.turtle = turtle.Turtle()
 
+        # Reset the Screen singleton to avoid reference leaks
+        self.addCleanup(setattr, turtle.Turtle, '_screen', None)
+
     def test_begin_end_fill(self):
         self.assertFalse(self.turtle.filling())
         self.turtle.begin_fill()