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-rw-r--r--Lib/test/test_inspect.py8
1 files changed, 8 insertions, 0 deletions
diff --git a/Lib/test/test_inspect.py b/Lib/test/test_inspect.py
index 5c6ae39..20f7217 100644
--- a/Lib/test/test_inspect.py
+++ b/Lib/test/test_inspect.py
@@ -1206,6 +1206,14 @@ class TestGetcallargsFunctions(unittest.TestCase):
self.assertEqualException(f3, '1, 2')
self.assertEqualException(f3, '1, 2, a=1, b=2')
+ # issue #20816: getcallargs() fails to iterate over non-existent
+ # kwonlydefaults and raises a wrong TypeError
+ def f5(*, a): pass
+ with self.assertRaisesRegex(TypeError,
+ 'missing 1 required keyword-only'):
+ inspect.getcallargs(f5)
+
+
class TestGetcallargsMethods(TestGetcallargsFunctions):
def setUp(self):