#####################################
###### IMPORT LIBRARIES
from machine import Pin
from utime import sleep

#####################################
###### PIN CONFIGURATIONS

# Configure the pin as output
# Replace with your GPIO Pins here
led_bar_pins=[23,22,21,5,17,16,4,0,2,15]

led_bar = [Pin(led_bar_pins[i], Pin.OUT) for i in range(10)]

#####################################
###### MAIN ROUTINE

def main():

    while True:
        # call the led subroutine here
        sub_led_bar()

#####################################
###### SUBROUTINE FOR LED

def sub_led_bar():

   # for each LED
    for pin in led_bar:

        # turn ON
        pin.on()

        # wait 0.05 seconds
        sleep(0.05)

        # turn OFF
        pin.off()

    # for each LED (reverse order)
    for pin in reversed(led_bar):

        # turn ON
        pin.on()

        # wait 0.05 seconds
        sleep(0.05)

        # turn OFF
        pin.off()
        
#####################################
###### EXECUTE MAIN ROUTINE
if __name__ == '__main__':
    main()