#include <boost/python.hpp>
using namespace boost::python;

class Base {
public:
	virtual int f() = 0;
};

int call_f(Base& b) { return b.f(); }

class BaseWrap : Base
{
    BaseWrap(PyObject* self_) : self(self_) {}
    int f() { return call_method<int>(self, "f"); }
    PyObject* self;
};

BOOST_PYTHON_MODULE(test_module)
{
	class_<Base, BaseWrap, boost::noncopyable>("Base", no_init)
        ;
    def("call_f", call_f);
}