Re: [Sndobj-devel] PySndObj, Python 2.4, Mac OS10.4

[Craig L. <lew...@mi...>]

I *finally* was able to get sndobj.py successfully generated and
installed on OSX (10.4.8), with Python 2.4.4

my initial problem was that I was continually getting this error when
I would try to 'import sndobj' from the python interpreter:

Traceback (most recent call last):
 File "<stdin>", line 1, in ?
 File "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/sndobj.py",
line 4, in ?
   import _sndobj
ImportError: Failure linking new module:
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/_sndobj.so:
Library not loaded: lib/libsndobj.dylib
 Referenced from:
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/_sndobj.so
 Reason: image not found


the default Python that comes with OSX, on my machine, was Python
2.3.5.  however, i was running Python 2.4.4 from a different location.
 i needed this because of other  modules i am using with my
application.  it turned out, that in the SConstruct file, the variable
pythonpath needed to be changed from:

pythonpath = '/System/Library/Frameworks/Python.framework'
(the location of the original Python 2.3.5 install), to:

pythonpath = '/Library/Frameworks/Python.framework'
(the location of Python 2.4.4.)

however, once i did this, i was still having problems when i'd run
scons.  the build would complete, but no sndobj.py file could be
found.  so, after reading a little bit, i ran scons again with the
cache disabled:

%scons --cache-disable
(scons user guide here: http://www.scons.org/doc/HTML/scons-user.html)

when i did that, it completely rebuilt SndObj, including generating
the sndobj.py file, along with its libraries.

still, the problem was that the PySndObj files (sndobj.py, _sndobj.so,
libsndobj.dylib) were not being installed into my Python 2.4.4
framework automatically with the scons build.  instead, they were just
showing up in the install folder on my desktop, so i had to manually
install them into my Python framework.  from the SConstruct file, as
far as i can tell, it doesn't look like it's built to install the
PySndObj files.  is this correct?

either way, it's working now.

another issue i notice: in the SConstruct file, in the general
configuration section, the indenting seemed to be very complicated.
is there a reason for this?  i know that indenting is crucial to
proper python execution, and the mixed spaces and tabs in that section
really confused.  one of the reason i bring this up is because even
though i had set pythonpath in the code, when i ran:

%scons -h

i got a printout with an 'actual' value of pythonpath to be blank.
so, i had to manually set python by running

%scons pythonpath=/Library/Frameworks/Python.framework

of course, i was running scons so many times that maybe this is some
error on my part.  either way, i wanted to see if anyone else had
notice the indenting in that section, and could possibly explain it.

all that said, i'm curious to know what other people on this list are
using SndObj for in their Python applications.  my current application
is a Tkinter-based GUI that takes incoming signals from a USB
prototype keyboard and turns those into sound.  it's basically a MIDI
controller, without the MIDI.

ok.  thanks for getting back to me.

-craig


On 1/23/07, akonsu <ak...@gm...> wrote:
> Hello,
>
> you can build it from source for your version. it looks like you are
> on osx, so it should work. it worked for me on openbsd, osx is even
> easier.
>
> konstantin
>
> 2007/1/23, sonify <so...@av...>:
> > Hi Craig,
> > What architecture/ operating system?
> >
> >
> > On 23/01/2007, at 10:39 AM, Craig Lewiston wrote:
> >
> > > I've been having trouble getting SndObj to work in Python, before I
> > > finally realized that the current release is only built for Python
> > > 2.3.  I changed my PATH to point to the Apple's default Python install
> > > (2.3.5), and SndObj worked great within Python.  The problem is, my
> > > current application that I'm trying to add sound to uses other
> > > external modules that are only compatible with at least Python 2.4.
> > >
> > > Is there a way I can build SndObj for Python 2.4?  Do you only have to
> > > alter _sndobj.so to link to Python 2.4 on the system, or is there
> > > something more fundamental that needs to be done?
> > >
> > > thanks,
> > > craig
> > >
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