test of boost::python vector to python lits conversion

yay.cxx

#include <boost/python.hpp>

#include <vector>
#include <string>

char const* yay()
{
  return "Yay!";
}


std::vector<int> myrange(int N) {
    std::vector<int> vi;
    for (int i = 0; i < N; i++) {
        vi.push_back(i);
    }
    return vi;
}


struct World
{
    void set(std::string msg) { this-> msg = msg; }
    std::string greet() { return msg; }
    std::string msg;
    std::vector<int> digits();
};

std::vector<int> World::digits() {
    std::vector<int> vi;
    for (int i = 0; i <= 9; i++) {
        vi.push_back(i);
    }
    return vi;
}

template<class T>
struct vector_to_python
{
    static PyObject* convert(const std::vector<T>& vec)
    {
        boost::python::list* l = new boost::python::list();
        for(std::size_t i = 0; i < vec.size(); i++)
            (*l).append(vec[i]);

        return l->ptr();
    }
};



BOOST_PYTHON_MODULE(libyay)
{
  using namespace boost::python;
  def("yay", yay);
  def("myrange", myrange);
  class_<World>("World")
      .def("greet", &World::greet)
      .def("set", &World::set)
      .def("digits", &World::digits)
      ;
  to_python_converter<std::vector<int, std::allocator<int> >, vector_to_python<int> >();
}

Code examples taken from here and here.