[Boost-users] Boost.Python: is my code safe?

I have a question regarding the use of Boost.Python. What I would like to do is to provide a simple scripting interface to an application in much the same way as Microsoft use Visual Basic within much of their product line (e.g. Excel) to provide direct access to the applications object model. My design is stunningly rendered below, +-------------------------+ | Application--+ | | | | Dynamically +---------------+ | v | Linked | Python Module | | +--->ObjectModel<------------------| | | | | +---------------+ | +---------------------+ | | | | Python Interpretter |<----------------------+ | | | | ">>> import ..." | +---------------------+ | +-------------------------+ What we have firstly is a our python module, in this case it exports a simple class 'ObjectModel' with various functions, sub objects and whatever else is required for the application to run. This is our Object Model, and is usable from the python interpretter on the command line. For what we have in mind however is for the python interpretter to be running inside the application (through use of the Py* functions from the python API and use of the relevant parts of Boost.Python - handle<>, object). What I want is for the application and the python instance to share the object model, for the interpretter to have knowledge of the ObjectModel it is simply imported from the python module. The application itself is linked against the python module in order to use ObjectModel (the relevant compiler specific code is inserted so that the ObjectModel class is exported/imported - __declspec(dllexport) and dllimport under Visual C++). With this setup, it is now possible to create an instance of ObjectModel within the python interpretter and use extract(...) in order to get access to it within the application, no doubt it is also possible to create the ObjectModel within the application and pass it to the python interpretter to use it there. Now my question basically regards pitfalls in this approach, there are two instances of the Python Module in use here but I'm sure that as long as care is taken to ensure the ObjectModel is destructed on the same heap that it was created on then there shall be no problems. Is there any other, possibly better way to do this perhaps - e.g. without requiring the use of the module at all, simply passing the Boost.Python class descriptions directly to the embedded interpretter. A simple test harness I have /appears/ to work fine with the above design. Here's an extremely cut down bit of code that should show kind of what I'm working on if I'm being a little unclear: my_module.hpp - this is the class that is in the python module that we shall have access to within python and our application: struct PLATFORM_SPECIFIC_DLL_EXPORT_COMMAND ObjectModel { const char * name() const; }; my_application.cpp - assume all the correct headers are included, the module is linked against etc: int main(int argc,char ** argv) { Py_Initialize(); //initialize the environment handle<> main_module(borrowed(PyImport_AddModule("__main__"))); handle<> main_namespace( borrowed(PyModule_GetDict(main_module.get()))); //import our python module handle<>(PyRun_String("import my_module", Py_file_input, main_namespace.get(), main_namespace.get()) ); //create a new instance of ObjectModel within python handle<>(PyRun_String("model = my_module.ObjectModel()", Py_file_input, main_namespace.get(), main_namespace.get())); //get the instance of ObjectModel and use it within our application object tmp(main_namespace); ObjectModel * model = extract(tmp["model"]); cout << model->name() << endl; Py_Finalize(); } Mat.