Interfacing python with c++

Question

I am trying to interface python with C++. I am using Visual Studio Express 2012. I also have an enthought python 2.7 distribution. When I tried to build a Release on Win 32 with the following code:

#include "stdafx.h"
#include "C:/Python27/include/Python.h"
#include "C:/Python27/Lib/site-packages/numpy/core/include/numpy/arrayobject.h"

using namespace std;


int main( int argc, char* argv[] )
{  
   int x = 1;
   PyObject *mod1;
   Py_Initialize();
   return 0;
}

I get the following error:

Error   1   error LNK2001: unresolved external symbol __imp__Py_Initialize

Please help, any ideas more than welcome.

It is a linking issue you can read the already asked question stackoverflow.com/questions/658879/… — AurA
– AurA, Commented Sep 13, 2013 at 5:47
also add Python to your include path instead of using absolute path — Loïc Faure-Lacroix
– Loïc Faure-Lacroix, Commented Sep 13, 2013 at 5:47
Sorry I am at a loss as to how you mean, I am trying to build it, which automatically links it. I just cant build it due to those errors. I also tried to go through that post but wasnt clear. I apologize if I am being clumsy, but please let me know how to fix that error to build my application. Thanks. — gbh
– gbh, Commented Sep 13, 2013 at 5:50

Pierre Fourgeaud · Accepted Answer · 2013-09-13 05:50:34Z

1

You should add C:\Python27\libs to your library paths and add python27.lib to your dependencies.

For that:

Go to project properties -> Configuration properties -> Linker.
Go to ->General and set the "Additional Library directories"

In this field you add C:\Python27\libs.

After that:

Go to Linker -> Input and set the "Additional Dependencies"

In this field you add python27.lib.

Also you should add C:\Python27\include to your include directories and just do:

#include <Python.h>

answered Sep 13, 2013 at 5:50

Pierre Fourgeaud

14.6k1 gold badge40 silver badges64 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

gbh Over a year ago

I did the above and also changed to 64 bit and solved my problem. Many thanks.

Hennaldo · Accepted Answer · 2013-09-13 06:04:21Z

0

I think you try to link a 64 Bit python library to a 32-Bit Application

answered Sep 13, 2013 at 6:04

Hennaldo

1556 bronze badges

Collectives™ on Stack Overflow

Interfacing python with c++

2 Answers 2

1 Comment

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related