1 files changed, 12 insertions, 0 deletions
diff --git a/Lib/test/test_keywordonlyarg.py b/Lib/test/test_keywordonlyarg.py
index 0503a7fc6a..e4a44c1d8f 100644
--- a/Lib/test/test_keywordonlyarg.py
+++ b/Lib/test/test_keywordonlyarg.py
@@ -176,6 +176,18 @@ class KeywordOnlyArgTestCase(unittest.TestCase):
                 return __a
         self.assertEqual(X().f(), 42)
 
+    def test_default_evaluation_order(self):
+        # See issue 16967
+        a = 42
+        with self.assertRaises(NameError) as err:
+            def f(v=a, x=b, *, y=c, z=d):
+                pass
+        self.assertEqual(str(err.exception), "name 'b' is not defined")
+        with self.assertRaises(NameError) as err:
+            f = lambda v=a, x=b, *, y=c, z=d: None
+        self.assertEqual(str(err.exception), "name 'b' is not defined")
+
+
 def test_main():
     run_unittest(KeywordOnlyArgTestCase)