[C++-sig] Re: Documentation error or too much newbie?

[yakumoklesk at yahoo.es]

I made a chekout from soundforge, compiled the boost libraries, then 
compiled de C program, and got an error because 
boost\python\detail\member_function_cast.hpp was not found. CVS did 
not retrieved it.

I made a checkout from boost-consulting in other directory, compiled 
again the boost libraries and then compiled the C++ program without 
any errors. But when it is going to convert the handle into a dict object, 
it results in an acces violation again.

What I am doing bad? Do I have to download python 2.3 instead of 
using python 2.2.3 in debug mode?(python_d.lib).

I'll try the release version of the libraries and DLLs to see what 
happens.

David Lucena.

On 13 Sep 2003 at 23:40, Dirk Gerrits wrote:

> yakumoklesk at yahoo.es wrote:
> > Opps, sorry. In the documentation there is written
> > 
> > main_namespace dict(...)
> > 
> > I think it is
> > 
> > dict main_namespace(...), because dict is an boost.python object 
> > representing a python dict, isn't it?
> 
> Yes, a very embarassing mistake on my part. But the fix you suggested 
> has been in CVS for quite some time. Even before the 1.30.1 release I 
> believe. That it's not in 1.30.1 or 1.30.2 is perhaps due to my negligance?
> 
> > But the fact is that
> > 
> > dict main_namespace( handle<>( borrowed( PyModule_GetDict( 
> > main_module.get() ) ) );
> > 
> > gives me an acces violation whet it is executed. Of course, before this 
> > line is executed first I initialize the pyton interpreter with Py_Initialize() 
> > and then I add the main module (if it isn't added yet) using the line (as 
> > shown in documentation)
> > 
> > handle<> main_module(borrowed( 
> > PyImport_AddModule("__main__") )); 
> > 
> > So, what have I forgot to do? How can I avoid the ACCES VIOLATION 
> > given by the execution of the "dict main_namespace(..)" statement?
> 
> I just tried the following out on MSVC7.1 with Python 2.3 and a Boost 
> from CVS, though I think it's a few weeks old now. (Better do a CVS 
> update. :)) It worked for me, so I assume you are using a different 
> compiler and/or different versions of Python and Boost.Python. Some more 
> information would help...
> 
> #include <iostream>
> #include <boost/python.hpp>
> 
> using namespace boost::python;
> 
> int main()
> {
>      Py_Initialize();
>      handle<> main_module(borrowed( PyImport_AddModule("__main__") ));
>      dict main_namespace(handle<>(borrowed(
>          PyModule_GetDict(main_module.get()) )));
>      handle<>( PyRun_String("result = 5 ** 2", Py_file_input,
>          main_namespace.ptr(), main_namespace.ptr()) );
>      int five_squared = extract<int>( main_namespace["result"] );
>      std::cout << "5^2 = " << five_squared << "\n";
>      Py_Finalize();
> }
> 
> Regards,
> Dirk Gerrits
> 
> 
> 
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