k400r keyboard bindings for pi 3

import os
import keyboard
import time

shutdown_time = 0
shutting_down = False

def mycallback( keyEvent ):
    global shutdown_time
    global shutting_down
    global home_pushed
    if keyEvent.event_type == keyboard.KEY_UP:
        print 'released'
        shutting_down = False #abort shutdown procedure
    elif keyEvent.scan_code == 142: #the "PC Power" button on the keyboard
        if shutting_down: #if they power button is being held in...
            print 'waiting for time to be up'
            if keyEvent.time - shutdown_time > 5: #...and more than 5s have elapsed...
                if keyboard.is_pressed( 'alt' ):
                    print 'rebooting'
                    os.system( 'sudo shutdown -r now' )
                elif keyboard.is_pressed( 'shift' ):
                    print( 'logging out' )
                    os.system( 'lxde-logout' )
                else:
                    print 'shutting down'
                    os.system( 'sudo shutdown -h now' ) #...shutdown!
        else: #if the button has just been pressed...
            print 'logging power button pressed time'
            shutdown_time = keyEvent.time #store the time it was initially pressed
            shutting_down = True #store that the button has been pressed and is now being held down
    elif keyEvent.scan_code == 172: #the "Home" button on the keyboard
        print 'showing desktop'
        keyboard.press( 'control' )
        keyboard.press( 'alt' )
        keyboard.press_and_release( 'd' )
        keyboard.release( 'control' )
        keyboard.release( 'alt' )
    elif keyEvent.scan_code == 164: #the 'pause/play' button aka F8
        print 'pausing/playing omxplayer'
    else:
        print keyEvent.scan_code
        print keyEvent.name
        print keyEvent.event_type
        print keyEvent.time

keyboard.hook( mycallback )
while True:
    time.sleep(10)