from machine import Pin
from time import sleep

l1 = Pin(21, Pin.OUT)
l2 = Pin(19, Pin.OUT)
l3 = Pin(18, Pin.OUT)
l4 = Pin(5, Pin.OUT)
l5 = Pin(17, Pin.OUT)
l6 = Pin(16, Pin.OUT)
l7 = Pin(4, Pin.OUT)
l8 = Pin(0, Pin.OUT)
l9 = Pin(2, Pin.OUT)
l10 = Pin(15, Pin.OUT)


while True:

    l1.on()
    l2.on()
    l3.on()
    l4.on()
    l5.on()
    l6.on()
    l7.on()
    l8.on()
    l9.on()
    l10.on()

    sleep(0.5)

    l1.off()
    l2.off()
    l3.off()
    l4.off()
    l5.off()
    l6.off()
    l7.off()
    l8.off()
    l9.off()
    l10.off()

    sleep(0.5)