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-rw-r--r--Lib/test/test_set.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/Lib/test/test_set.py b/Lib/test/test_set.py
index b1fab0f..29bb39d 100644
--- a/Lib/test/test_set.py
+++ b/Lib/test/test_set.py
@@ -593,6 +593,7 @@ class TestSet(TestJointOps, unittest.TestCase):
p = weakref.proxy(s)
self.assertEqual(str(p), str(s))
s = None
+ support.gc_collect() # For PyPy or other GCs.
self.assertRaises(ReferenceError, str, p)
def test_rich_compare(self):