class PowerState:
	UNKNOWN=0
	OFF=1
	ON=2
	SLEEP=3
	UNPLUGGED=4

def PowerStateToStr( powerState ):
	if powerState == PowerState.UNKNOWN:
		return 'UNKNOWN'
	if powerState == PowerState.OFF:
		return 'OFF'
	if powerState == PowerState.ON:
		return 'ON'
	if powerState == PowerState.SLEEP:
		return 'SLEEP'
	if powerState == PowerState.UNPLUGGED:
		return 'UNPLUGGED'
	else:
		assert( False )