usb_mouse.py

import usb.core
import usb.util
import sys
interface = 0
# use command line: lsusb

dev = usb.core.find(idVendor=0x0458, idProduct=0x003a)

def main():

    if dev is None:
        print "device not found"
        return 
    else:
        print "device found"

    if dev.is_kernel_driver_active(interface) is True:
        print "but we need to detach kernel driver"
        dev.detach_kernel_driver(interface)

    print "claiming device"
    usb.util.claim_interface(dev, interface)
    print "release claimed interface"
    usb.util.release_interface(dev, interface)
    print "now attaching the kernel driver again"
    dev.attach_kernel_driver(interface)
    print "all done"
    
    return 0

if __name__ == '__main__':
    main()