Issue #20786: Fix signatures for dict.__delitem__ and property.__delete__
diff --git a/Lib/test/test_inspect.py b/Lib/test/test_inspect.py
index 0dc7451..5c6ae39 100644
--- a/Lib/test/test_inspect.py
+++ b/Lib/test/test_inspect.py
@@ -1764,6 +1764,11 @@
__call__ = type
test_callable(ThisWorksNow())
+ # Regression test for issue #20786
+ test_unbound_method(dict.__delitem__)
+ test_unbound_method(property.__delete__)
+
+
@cpython_only
@unittest.skipIf(MISSING_C_DOCSTRINGS,
"Signature information for builtins requires docstrings")