# Import necessary libraries
from machine import Pin
import time
# Initialize pins

# Initialize as input and output
led = Pin(26, Pin.OUT)
led2 = Pin(0, Pin.OUT)
led3 = Pin(1, Pin.OUT)


while True:
    for i in range (0,8):
        #Start sequence with all leds off
        led.off()
        led2.off()
        led3.off()
        print(i)
        #convert int to bin and then string
        b=str(bin(i))
        #turn on LED 001
        if b[len(b)-1] == '1':
            led.on()
        #turn on LED 010
        if b[len(b)-2] == '1':
            led2.on()
        #turn on LED 100
        if b[len(b)-3] == '1':
            led3.on()
        time.sleep(1)