Issue #17071: Signature.bind() now works when one of the keyword arguments is named ``self``.

1 files changed, 10 insertions, 0 deletions

diff --git a/Lib/test/test_inspect.py b/Lib/test/test_inspect.py
index 80db03b..6e3f04e 100644
--- a/Lib/test/test_inspect.py
+++ b/Lib/test/test_inspect.py
@@ -2241,6 +2241,16 @@ class TestSignatureBind(unittest.TestCase):
         with self.assertRaisesRegex(TypeError, "parameter is positional only"):
             self.call(test, a_po=1, b_po=2)
 
+    def test_signature_bind_with_self_arg(self):
+        # Issue #17071: one of the parameters is named "self
+        def test(a, self, b):
+            pass
+        sig = inspect.signature(test)
+        ba = sig.bind(1, 2, 3)
+        self.assertEqual(ba.args, (1, 2, 3))
+        ba = sig.bind(1, self=2, b=3)
+        self.assertEqual(ba.args, (1, 2, 3))
+
 
 class TestBoundArguments(unittest.TestCase):
     def test_signature_bound_arguments_unhashable(self):