#10360: catch TypeError in WeakSet.__contains__, just like WeakKeyDictionary does.
diff --git a/Lib/test/test_weakset.py b/Lib/test/test_weakset.py
index fe68b66..58a1f87 100644
--- a/Lib/test/test_weakset.py
+++ b/Lib/test/test_weakset.py
@@ -50,7 +50,8 @@
     def test_contains(self):
         for c in self.letters:
             self.assertEqual(c in self.s, c in self.d)
-        self.assertRaises(TypeError, self.s.__contains__, [[]])
+        # 1 is not weakref'able, but that TypeError is caught by __contains__
+        self.assertNotIn(1, self.s)
         self.assertIn(self.obj, self.fs)
         del self.obj
         self.assertNotIn(ustr('F'), self.fs)