from machine import Pin
import utime
leds = [Pin(i,Pin.OUT) for i in range(0,5)]
if __name__ == '__main__':
 while True:
     for n in range(0,5):
         leds[n].value(1)
         utime.sleep_ms(50)
     for n in range(0,5):
         leds[n].value(0)
         utime.sleep_ms(50)