Ok, try to create another env variable:
export PYUSB_DEBUG_LEVEL=debug
And send the results. PyUSB will start to dump debug messages on the screen.
Wander
2010/5/5 Mike Lawrence <mike.lawre...@dal.ca>
> I've tried adding /usr/local/lib to both $PATH and $LD_LIBRARY_PATH (I
> had to create the latter), but no luck; the error persists.
>
>
> On Wed, May 5, 2010 at 6:19 PM, Wander Lairson <wander.lair...@gmail.com>
> wrote:
> > Hi Mike,
> >
> > What about your library path? Does it point to /usr/local/lib ?
> >
> > Wander
> >
> > 2010/5/5 Mike Lawrence <mike.lawre...@dal.ca>
> >>
> >> Hi folks,
> >>
> >> Apologies if I've missed the solution to this in my search of the
> >> mailing list's archives, but I'm getting a "No backend available"
> >> error when using pyusb-1.0.0-a0 with libusb-1.0.8. Both compiled fine
> >> and I see all the requisite files in /usr/local/lib (
> >> libusb-1.0.0.dylib, libusb-1.0.a, libusb-1.0.dylib, libusb-1.0.la ),
> >> but:
> >>
> >> Python 2.6.2 (r262:71600, Apr 16 2009, 09:17:39)
> >> [GCC 4.0.1 (Apple Computer, Inc. build 5250)] on darwin
> >> Type "help", "copyright", "credits" or "license" for more information.
> >> >>> import usb; usb.busses()
> >> Traceback (most recent call last):
> >> File "<stdin>", line 1, in <module>
> >> File
> >>
> "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/usb/legacy.py",
> >> line 326, in busses
> >> return (Bus(),)
> >> File
> >>
> "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/usb/legacy.py",
> >> line 322, in __init__
> >> self.devices = [Device(d) for d in core.find(find_all=True)]
> >> File
> >>
> "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/usb/core.py",
> >> line 819, in find
> >> raise ValueError('No backend available')
> >> ValueError: No backend available
> >>
> >>
> >> Any suggestions?
> >>
> >>
> >> --
> >> Mike Lawrence
> >> Graduate Student
> >> Department of Psychology
> >> Dalhousie University
> >>
> >> Looking to arrange a meeting? Check my public calendar:
> >> http://tr.im/mikes_public_calendar
> >>
> >> ~ Certainty is folly... I think. ~
> >>
> >>
> >>
> ------------------------------------------------------------------------------
> >> _______________________________________________
> >> pyusb-users mailing list
> >> pyusb-users@lists.sourceforge.net
> >> https://lists.sourceforge.net/lists/listinfo/pyusb-users
> >
> >
> >
> ------------------------------------------------------------------------------
> >
> > _______________________________________________
> > pyusb-users mailing list
> > pyusb-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/pyusb-users
> >
> >
>
>
>
> --
> Mike Lawrence
> Graduate Student
> Department of Psychology
> Dalhousie University
>
> Looking to arrange a meeting? Check my public calendar:
> http://tr.im/mikes_public_calendar
>
> ~ Certainty is folly... I think. ~
>
>
> ------------------------------------------------------------------------------
> _______________________________________________
> pyusb-users mailing list
> pyusb-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>
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