Hi, I've a suggestion - make exposing Delphi objects to python painless by utilizing the new RTTI (runtime type information) feature in D2010 (and above). Currently exposing a class to the hosted Python code needs to you to write too much code (check demo06), I guess if we take advantage of the new RTTI feature in the newer versions of Delphi, the process can be improved a lot. For example, check out the Delphi chromium embedded project, all you have to do to expose the interface of any Delphi class to the JavaScript environment, is to register the class: // this is your class exposed to JS Test = class class procedure doit(const v: string); end; initialization // Register your class TCefRTTIExtension.Register('app', Test); // and in JavaScript code to call that class above: app.doit(''foo'')', '', 0); Cool! Isn't it? The above code was extracted from: http://groups.google.com/group/delphichromiumembedded/browse_thread/thread/1793e 7ca66012f0c/8ab31a5ecdb6bf48?lnk=gst&q=JavaScript+return+# Some intro about RTTI introduced since D2010: http://robstechcorner.blogspot.com/2009/09/delphi-2010-rtti-basics.html