#include <boost/python.hpp>  #include <boost/python/module.hpp>     #include <boost/python/def.hpp>  #include <boost/python/to_python_converter.hpp>  #include  using namespace std;  using namespace boost::python;     namespace HelloPython{  // 简单函数  char const* sayHello(){      return "Hello from boost::python";  }        // 简单类  class HelloClass{  public:      HelloClass(const string& name):name(name){      }  public:      string sayHello(){        return "Hello from HelloClass by : " + name;      }  private:      string name;  };  // 接受该类的简单函数  string sayHelloClass(HelloClass& hello){      return hello.sayHello() + " in function sayHelloClass";  }        //STL容器  typedef vector<int> ivector;        //有默认参数值的函数  void showPerson(string name,int age=30,string nationality="China"){      cout << name << " " << age << " " << nationality << endl;  }     // 封装带有默认参数值的函数  BOOST_PYTHON_FUNCTION_OVERLOADS(showPerson_overloads,showPerson,1,3) //1:最少参数个数,3最大参数个数     // 封装模块  BOOST_PYTHON_MODULE(HelloPython){      // 封装简单函数      def("sayHello",sayHello);         // 封装简单类，并定义__init__函数      class_("HelloClass",init())        .def("sayHello",&HelloClass::sayHello)//Add a regular member function        ;      def("sayHelloClass",sayHelloClass); // sayHelloClass can be made a member of module!!!         // STL的简单封装方法      class_("ivector")        .def(vector_indexing_suite());      class_ >("ivector_vector")        .def(vector_indexing_suite >());         // 带有默认参数值的封装方法      def("showPerson",showPerson,showPerson_overloads());  }