[pyusb-users] NotImplementedError when using pyusb

[greg y. <gyu...@ya...>]

When running the following code:



import sys
import usb.core
import usb.util

VENDOR_ID = 0x1bcf
PRODUCT_ID = 0x0007
DATA_SIZE = 8

# find the MagTek reader

device = usb.core.find(idVendor=VENDOR_ID, idProduct=PRODUCT_ID)

if device is None:
    sys.exit("Could not find device.")

# make sure the hiddev kernel driver is not active

if device.is_kernel_driver_active(0):
    try:
        device.detach_kernel_driver(0)
    except usb.core.USBError as e:
        sys.exit("Could not detatch kernel driver: %s" % str(e))
....

I get this error:

  File "test.py", line 20, in <module>
    if device.is_kernel_driver_active(0):
  File "C:\Python26\lib\site-packages\usb\core.py", line 704, in is_kernel_driver_active
    return self._ctx.backend.is_kernel_driver_active(self._ctx.handle, interface)
  File "C:\Python26\lib\site-packages\usb\backend\__init__.py", line 355, in is_kernel_driver_active
    _not_implemented(self.is_kernel_driver_active)
  File "C:\Python26\lib\site-packages\usb\backend\__init__.py", line 79, in _not_implemented
    raise NotImplementedError(func.__name__)
NotImplementedError: is_kernel_driver_active

Am I suppose to implement this on my own? Can I just redirect this to another python module that actually implements this?