title: How to bind/unbind usb device in PyUsb?
body: <p>I need to on/off several usb devices on my python script.
  Can i bind and unbind usb devices with PyUsb?</p>
  
  <p>I can do it with shell commands:<br>
  Power off:<br>
  <code>echo "device_nuber" &gt; /sys/bus/usb/drivers/usb/unbind</code><br>
  Power on:<br>
  <code>echo "device_nuber" &gt; /sys/bus/usb/drivers/usb/bind</code></p>
  
  <p>How execute the same in python script?</p>