@@ -0,0 +1,7 @@
+# -*- coding: utf-8 -*-
+
+FOO = 1
+
+
+def test_foo():
+    return FOO
@@ -64,5 +64,20 @@ public void TestSysArgsImportException()
             PyObject module = PythonEngine.ImportModule("PyImportTest.sysargv");
             Assert.IsNotNull(module);
         }
+
+        /// <summary>
+        /// Test Global Variable casting. GH#420
+        /// </summary>
+        [Test]
+        public void TestCastGlobalVar()
+        {
+            dynamic foo = Py.Import("PyImportTest.cast_global_var");
+            Assert.AreEqual("1", foo.FOO.ToString());
+            Assert.AreEqual("1", foo.test_foo().ToString());
+
+            foo.FOO = 2;
+            Assert.AreEqual("2", foo.FOO.ToString());
+            Assert.AreEqual("2", foo.test_foo().ToString());
+        }
     }
 }