notas de estudio python_boost 1, paquete clase c ++

Este es el código c ++

#include <boost/python.hpp>

#include <boost/python/list.hpp>

#include <boost/python/extract.hpp>

#include <string>

#include <sstream>

#include <vector>



struct World

{

        void set(std::string msg) { mMsg = msg; }

        void many(boost::python::list msgs) {

                long l = len(msgs);

                std::stringstream ss;

                for (long i = 0; i<l; ++i) {

                        if (i>0) ss << ", ";

                        std::string s = boost::python::extract<std::string>(msgs[i]);

                        ss << s;

                }

                mMsg = ss.str();

        }

        std::string greet() { return mMsg; }

        std::string mMsg;

};



using namespace boost::python; //这里必须写



BOOST_PYTHON_MODULE(boost_eg)

{
        
        class_<World>("World") //导入一个默认构造函数的，类

                .def("greet", &World::greet)//导入类中的greet函数

                .def("set", &World::set)//导入类中的set函数

                .def("many", &World::many)//导入类的many函数

                ;//一个导入语句结束，加分号结束

};

Código de llamada Python

import boost_eg
t = boost_eg.World()
t.set("bom dia!")
print (t.greet())
t.many(['Good Morning', 'Buon giorno', 'Kali mera'])
print (t.greet())

Resultado de la operación

bom dia!
Good Morning, Buon giorno, Kali mera