py2app and OpenGL, "No module named util" in ctypes

trhaynes trhaynes at gmail.com
Tue Jun 2 23:56:42 CEST 2009


On May 28, 6:28 pm, Carl Banks <pavlovevide... at gmail.com> wrote:
> On May 28, 11:06 am, trhaynes <trhay... at gmail.com> wrote:
>
>
>
> > I'm trying to use py2app to package an OpenGL app, so first I tried to
> > build the example here
>
> >http://svn.pythonmac.org/py2app/py2app/trunk/examples/PyOpenGL/
>
> > and I get the error:
>
> > >  File "/opt/local/lib/python2.5/site-packages/PyOpenGL-3.0.0c1-py2.5.egg/OpenGL/platform/darwin.py", line 24, in <module>
> > >    import ctypes, ctypes.util
> > >ImportError: No module named util
> > >2009-05-28 13:55:06.819 lesson5[19965:10b] lesson5 Error
> > >2009-05-28 13:55:06.821 lesson5[19965:10b] lesson5 Error
> > >An unexpected error has occurred during execution of the main script
>
> > >ImportError: No module named util
>
> > But when I open up my python interactive interpreter and "import
> > ctypes.util", it works fine (using lesson5.app/Contents/MacOS/python,
> > too).
>
> > Thanks for the help.
>
> What has happened is that py2app didn't bundle ctypes.util with the
> app, because py2app failed to detect that it was imported for some
> reason.
>
> A typical workaround is to imported in maually in your main script to
> make it explicit to py2app that it should be packaged.
>
> A word of caution: PyOpenGL uses entry hooks and that can cause a lot
> of trouble for application builder utilities like py2exe and py2app.
> In fact, I decided to stop using PyOpenGL in my projects in large part
> because of that issue (I use my own OpenGL wrapper now).  It's
> possible py2app has learned to deal with entry hooks by now, but these
> days I refuse to use packages that require entry hooks so I wouldn't
> know.
>
> Carl Banks

Thanks all.  I had to add ctypes.util to the list of includes for it
to work.



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