import time
import os
import RPi.GPIO as GPIO


GPIO.setmode(GPIO.BOARD)

pins = [8,10,12,16,18,22,24,26]

for pin in pins:
    print(pin)
    # GPIO.setup(pin, GPIO.OUT)
    GPIO.output(pin, False)
    time.sleep(float(0.5))
    GPIO.output(pin, True)
GPIO.cleanup