embedded python in c++ packaging

[Furkan Kuru]

Sorry for long delay,

I've tried below code (Setting pythonpath environment variable)
and then initialize python interpreter but the embedded python interpreter
did not get the newly assigned PYTHONPATH.
I ve looked at the sys.path in python code (that is run by the embedded
interpreter) and it behaved according to older pythonpath.

Setting environment variable seemed to be correct.
Does py_initialize run in another thread so it starts before setting the
environment var?

// add custom plib.zip archive to pythonpath

if(!::getenv("PYTHONPATH"))

{

::putenv("PYTHONPATH=.;.\\plib.zip");

}

else ::putenv("PYTHONPATH=%PYTHONPATH%;.\\plib.zip");

std::cout << "PYTHONPath Set to: " << ::getenv("PYTHONPATH") << std::endl <<
"And Again: ";

system("echo %PYTHONPATH%");

Py_Initialize();



Regards,

On Fri, Feb 8, 2008 at 2:08 AM, Bronner, Gregory <gregory.bronner at lehman.com>
wrote:

>  I've done this the rather old-fashioned way.
>
> Basically, what I do is:
>
> Step 1:
>
> Embed Python:
>   if(!::getenv("PYTHONHOME"))
>   {
>  ::putenv("PYTHONHOME=<Whatever>");
>   }
>   if(!::getenv("PYTHONPATH"))
>   {
>  ::putenv("PYTHONPATH=.");
>   }
>
>   Py_SetProgramName("leaktester");
>   Py_InitializeEx(0);
>   init_memoryhoginterface();  // This initializes your SWIG module
>   PyRun_SimpleString("print 'HELLO FROM PYTHON'");  //<--- OR you can do
> something else here like run a file
>
>
> Step 2:
> Extend python to talk back to your C++ code.
> I use one giant SWIG module (see init function above)
>
> SWIG allows you to finely control what you expose to python, so you don't
> wind up exposing the whole C++ API.
>
>
>
>
>
>
>
>
>
>  ------------------------------
> *From:* Furkan Kuru [mailto:furkankuru at gmail.com]
> *Sent:* Thursday, February 07, 2008 6:06 PM
> *To:* python-list at python.org
> *Subject:* Re: embedded python in c++ packaging
>
>   I do not have access to my development machine right now.
> but is it enough adding just a simple line at the top of my main python
> file 'sys.path.append("modules.zip")' before importing any other modules?
>
> On 2/7/08, Gabriel Genellina <gagsl-py2 at yahoo.com.ar> wrote:
> >
> > En Thu, 07 Feb 2008 16:18:57 -0200, Joshua Kugler <jkugler at bigfoot.com>
> > escribió:
> > > Furkan Kuru wrote:
> > >>
> > >> I have been developing an application in C++ that embeds Python
> > >> interpreter. It takes advantage of too many modules from Python.
> > >> When I want to package this application, I need to add too many files
> > >> (.pyc) from Python/lib folder together with Python25.dll.
> > >> Is there a way to pack these .pyc files to a zip file and redirect
> > >> Python25.dll to that zip file?
> > >
> > > That is effectively what py2exe does with the modules required by the
> > > main
> > > application.  It takes all the required modules and puts them in a
> > > library.zip file.  You might take a look at how it does it.
> >
> > Using py2exe has an additional advantage, it recursively scans all
> > modules
> > looking for dependencies.
> > Once you know the required set of modules, you can bundle them in a .zip
> > file and add its full path into sys.path (the absolute path including
> > filename and .zip extension). Python does look into the .zip searching
> > for
> > modules.
> >
> > --
> > Gabriel Genellina
> >
> > --
> > http://mail.python.org/mailman/listinfo/python-list
> >
>
>
>
> --
> Furkan Kuru
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-- 
Furkan Kuru
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