Thanks again Dave for the help provided ! I would like to know if there is a way to do the same for a constructor. I planned to use a .def("__init__", rawfunction(constructorfwd)) but this wont work for I do not have a constructed object to start with ;-) and on the top of that the object needs to be constructed at a specific place. Browsing through the Boost Python code, it looks like I could use the detail::make_keyword_range_constructor<Signature,NArgs> function or even use the objects::make_holder<Arity> however I do know which parameters I should provide... Thanks in advance, Marc