// Copyright Ralf W. Grosse-Kunstleve 2002-2004. Distributed under the Boost // Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) #include <boost/python/module.hpp> #include <boost/python/def.hpp> #include <boost/python/tuple.hpp> #include <boost/python/to_python_converter.hpp> namespace { // Avoid cluttering the global namespace. // Converts a std::pair instance to a Python tuple. template <typename T1, typename T2> struct std_pair_to_tuple { static PyObject* convert(std::pair<T1, T2> const& p) { return boost::python::incref( boost::python::make_tuple(p.first, p.second).ptr()); } static PyTypeObject const *get_pytype () {return &PyTuple_Type; } }; // Helper for convenience. template <typename T1, typename T2> struct std_pair_to_python_converter { std_pair_to_python_converter() { boost::python::to_python_converter< std::pair<T1, T2>, std_pair_to_tuple<T1, T2>, true //std_pair_to_tuple has get_pytype >(); } }; // Example function returning a std::pair. std::pair<int, int> foo() { return std::pair<int, int>(3, 5); } } // namespace anonymous BOOST_PYTHON_MODULE(std_pair_ext) { using namespace boost::python; std_pair_to_python_converter<int, int>(); def("foo", foo); }