[C++-sig] Import causes access violation

[Julian Bailey]

Hi,
I am running through the basic examples on the boost website for embedding boost::python.
My code currently reads:

#include <iostream>
#include "./include/Python.h"
#include "./boost/python.hpp"

using namespace boost::python;
int    main(void)
{
       Py_Initialize();
       object main_module = import("__main__");
       object main_namespace = main_module.attr("__dict__");
       object ignored = exec("print Hello world",main_namespace);
       return 0;
}
The program links successfully and begins running, however an access violation occurs (NULL pointer) at the first line after "py_initialize();" when i call import("__main__");
Visual studio 2010s debugger says the exception occurs at:  line 74 in object_attributes.hpp:
inline object const_attribute_policies::get(object const& target, char const* key)
{
    return python::getattr(target, key);
}
Python was built using Visual studio 2010 so i had access to the python debug library. Boost is version 1.45 and was built using :
bjam --build-type=complete msvc stage --with-python

I am linking against:
boost_python-vc100-mt-gd-1_45.lib
and
boost_python-vc100-mt-gd-1_45.dll

I have looked for soutions on the internet and have found nothing right now. Can anyone help me?

note: i am building my application in MSVC 2010, this should work though shouldn't it?


Dr Julian Bailey
Electronic Systems & Devices,
School of Electronics and Computer Science,
University of Southampton,
Southampton,
SO17 1BJ,
United Kingdom.

Tel. +44 (0)2380 593545
email: jab at ecs.soton.ac.uk


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