On Mon, Apr 20, 2009 at 1:53 PM, glok_twen <glok_t...@yahoo.com> wrote:
>
> hi.
>
> i have used boost python to create the sample from the doc within visual
> studio. a dll has resulted. but when i copy that dll to any of numerous
> places on my path, and run a python shell, i keep getting:
>
> ImportError: no module named hello
>
> Here is the code, it's contained in 2 modules within visual c++ (maybe that
> part of the problem?):
>
> ***** first module *****
>
> // boost_pyth_01.cpp : Defines the exported functions for the DLL
> application.
> //
>
> #include <boost/python.hpp>
> using namespace boost::python;
>
>
> //#include "stdafx.h"
>
> __declspec(dllexport) struct World
> {
> void set(std::string msg) { this->msg = msg; }
> std::string greet() { return msg; }
> std::string msg;
> };
>
>
> BOOST_PYTHON_MODULE(hello)
> {
> class_<World>("World")
> .def("greet", &World::greet)
> .def("set", &World::set)
> ;
> }
>
> ***** and, second module *****
>
> // dllmain.cpp : Defines the entry point for the DLL application.
> #include "stdafx.h"
>
> BOOL APIENTRY DllMain( HMODULE hModule,
> DWORD ul_reason_for_call,
> LPVOID lpReserved
> )
> {
> switch (ul_reason_for_call)
> {
> case DLL_PROCESS_ATTACH:
> case DLL_THREAD_ATTACH:
> case DLL_THREAD_DETACH:
> case DLL_PROCESS_DETACH:
> break;
> }
> return TRUE;
> }
>
>
> it does build a dll, named after my project name in the first module. i
> copied this dll to numerous places on my path. still get the error above in
> the python shell.
>
> also i get this warning during the link:
>
> 1>d:\cpp_testing\boost_pyth_01\boost_pyth_01.cpp(15) : warning C4091:
> '__declspec(dllexport)' : ignored on left of 'World' when no variable is
> declared
>
> --
> View this message in context:
> http://www.nabble.com/boost-python-in-visual-c%2B%2B-2008-tp23130743p23130743.html
> Sent from the Python - c++-sig mailing list archive at Nabble.com.
>
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>
Hi,
Are you compiled your module to a file with '.dll' extension? Accord
to Python document, the '.dll' extension will not be recognized by
Python after version 2.5.
(http://docs.python.org/extending/windows.html) You should change the
extension name to '.pyd'.
-- Haoyu Bai
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