pythonnet · lostmsu · Aug 6, 2021 · Oct 23, 2020
diff --git a/src/embed_tests/Inspect.cs b/src/embed_tests/Inspect.cs
@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+
+using NUnit.Framework;
+
+using Python.Runtime;
+
+namespace Python.EmbeddingTest
+{
+    public class Inspect
+    {
+        [OneTimeSetUp]
+        public void SetUp()
+        {
+            PythonEngine.Initialize();
+        }
+
+        [OneTimeTearDown]
+        public void Dispose()
+        {
+            PythonEngine.Shutdown();
+        }
+
+        [Test]
+        public void InstancePropertiesVisibleOnClass()
+        {
+            var uri = new Uri("http://example.org").ToPython();
+            var uriClass = uri.GetPythonType();
+            var property = uriClass.GetAttr(nameof(Uri.AbsoluteUri));
+            var pyProp = (PropertyObject)ManagedType.GetManagedObject(property.Reference);
+            Assert.AreEqual(nameof(Uri.AbsoluteUri), pyProp.info.Value.Name);
+        }
+    }
+}
diff --git a/src/runtime/propertyobject.cs b/src/runtime/propertyobject.cs
@@ -11,7 +11,7 @@ namespace Python.Runtime
    [Serializable]
    internal class PropertyObject : ExtensionType
    {
-        private MaybeMemberInfo<PropertyInfo> info;
+        internal MaybeMemberInfo<PropertyInfo> info;
        private MaybeMethodInfo getter;
        private MaybeMethodInfo setter;

@@ -50,9 +50,9 @@ public static IntPtr tp_descr_get(IntPtr ds, IntPtr ob, IntPtr tp)
            {
                if (!getter.IsStatic)
                {
-                    Exceptions.SetError(Exceptions.TypeError,
-                        "instance property must be accessed through a class instance");
-                    return IntPtr.Zero;
+                    Runtime.XIncref(ds);
+                    // unbound property
+                    return ds;
                }

                try