ImportError: No module named usb

[Alikazam]

I wonder if anybody can help. I am trying to install pywws on my Qnap
ts210. I have installed python25 using qpkg and then installed libusb
0.1.12-2 and py25-usb 0.4.1-1 using ipkg.

When I run TestWeatherStation.py I get the message ImportError: no
module named usb.

I have read on this forum that this is likely a problem with py25-usb
not being installed properly. I have removed and then reinstalled py25-
usb and get the same error. I originally had py-usb installed but
removed this and replaced it with py25-usb as recommended on another
post.

I've run out of ideas!

Ali

[Jim Easterbrook]

I think the clue is that you used qpkg to install python25 and ipkg to
install py25-usb. I suspect ipkg has installed the py25-usb modules
somewhere not on python's search path. You can test this by seeing where
each package thinks the 'site-packages' directory is:

qpkg files python25 | grep site

ipkg files py25-usb | grep site

If this is the answer, you can add the ipkg site-package directory to
your python installation's search path, as described here:
http://docs.python.org/install/index.html#inst-search-path
or you could uninstall the qpkg python25 and install the ipkg one
instead. This might be a better solution as there are less likely to be
incompatibilities between modules and the python interpreter.
--
Jim Easterbrook <http://www.jim-easterbrook.me.uk/>

[Alastair Hallsworth]

Great advice - I took the second option and removed the qpkg version, then installed with ipkg. Must be making progress because I get a different error message!

[/opt/bin/pywws-11.05_r380] # python TestWeatherStation.py                                                 

Traceback (most recent call last):

  File "TestWeatherStation.py", line 119, in <module>

    sys.exit(main())

  File "TestWeatherStation.py", line 71, in main

    ws = WeatherStation.weather_station(ws_type=ws_type)

  File "/share/MD0_DATA/.qpkg/Optware/bin/pywws-11.05_r380/pywws/WeatherStation.py", line 234, in __init__

    self.devh.setConfiguration(1)

usb.USBError: could not set config 1: Device or resource busy

Exception exceptions.ValueError: ValueError('No interface claimed',) in <bound method weather_station.__del__ of <pywws.WeatherStation.weather_station object at 0x405f8bd0>> ignored

Any ideas? I will search through the group for any similar problems.

Thanks for your help.

Ali

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[felixs]

Hello,

I had the same problem with a "Allnet" NAS.
Many tests later and with help from an other forum I got the
information,
that Kernel 2.4.xx this usb software (driver for weatherstation) not
supported.
Kernel 2.6.xx and higher have no problem with this. Mayby you have the
same problem.

felix