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-rw-r--r--Lib/test/test_builtin.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index cac4555..b3ae319 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -1151,6 +1151,10 @@ class BuiltinTest(unittest.TestCase):
raise ValueError
self.assertRaises(ValueError, sum, BadSeq())
+ empty = []
+ sum(([x] for x in range(10)), empty)
+ self.assertEqual(empty, [])
+
def test_type(self):
self.assertEqual(type(''), type('123'))
self.assertNotEqual(type(''), type(()))