[C++-sig] Failed to import pyd File When python embed into C++

[Michael Wild]

On Wed, Jan 23, 2013 at 8:19 AM, salinea <liujz39 at gmail.com> wrote:

>
> I create a pyd File named "testPyd" with boostPython,and then I import the
> testPyd module into "test.py", it works perfect!
> But when I embeded the python interpreter into my C++ project and run the
> "test.py", it comes out a "ImportErr: no module named testPyd".
> It has confused me for two days and I googled for long time,but I can't
> find
> the answer!
> Anybody here can help me ?
> Thank you!
>
> Here is my test examples:
> The C++ codes to build the *pyd File* is:
> Excute.h
>
> #ifndef EXCUTE_H_
> #define EXCUTE_H_
> #include <string>
>
> class Excute
> {
> public:
>         Excute(){}
>         int getIoReuslt(std::string ioStr);
>         int getSignal();
> };
> #endif
>
> Excute.cpp:
> #include "Excute.h"
> #include "Explanation.h"
> #include <boost/python.hpp>
>
> int Excute::getIoReuslt(std::string ioStr)
> {
>         return 1;
> }
>
> int Excute::getSignal()
> {
>         int i = rand()%2;
>         return i;
> }
>
> BOOST_PYTHON_MODULE(pythonDll)
> {
>         using namespace boost::python;
>         class_<Excute>("Excute", init<>())
>                 .def("getIoResult", &Excute::getIoReuslt)
>                 .def("getSignal", &Excute::getSignal)
>                 ;
> }
> Then a pyd File Named pythonDll is created(pythonDll.pyd),
> Here are the codes in my test.py:
> test.py:
>
> from pythonDll import*
> h=Excurte()
> print h.getIoResult("a")
> print h.getSignal()
>
> And this script works perfect in IDLE.
>
> And then I embed python into my C++ project,Here are the test codes:
> #include <Python.h>
> #include <string>
>
> int main(int argc, char* argv[])
> {
>         Py_Initialize();
>         FILE * fp = fopen("$PATH/test.py", "r");
>         if (fp == NULL)
>         {
>             return 1;
>         }
>         PyRun_SimpleString("execfile($PATH/test.py')");
>         Py_Finalize();
>
>         system("Pause");
>
>         return 0;
> }
>
> The result is:
> Traceback (most recent call last):
>   File "<string>", line 1, in <module>
>   File "$PATH/test.py", line 1, in <module>
>     from pythonDll import*
> ImportError: No module named pythonDll
> [19228 refs]
>
>
Just to help you debug the issue: have you tried putting something like
this into your test.py?

import sys
sys.stderr.write("PYTHONPATH = %s\n"%(":".join(sys.path)))


Michael
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