from evdev import InputDevice, categorize, ecodes, KeyEvent
gamepad = InputDevice('/dev/input/event4')
for event in gamepad.read_loop():
    if event.type == ecodes.EV_ABS:
        absevent = categorize(event)
        if ecodes.bytype[absevent.event.type][absevent.event.code]=='ABS_RZ':
            if absevent.event.value > 128:
                print 'revesre'
                print absevent.event.value
            elif absevent.event.value < 127:
                print 'anti Srevesre'
                print absevent.event.value
        if ecodes.bytype[absevent.event.type][absevent.event.code]=='ABS_Z':
            if absevent.event.value > 128:
                print 'rigt'
                print absevent.event.value
            elif absevent.event.value < 127:
                print 'other rigt'
                print absevent.event.value