from machine import Pin #module to import pin library
from time import sleep #module to import sleep function

# Define the pins for each LED into a common object
pins = [4, 0, 2]

# Create a Pin object for each LED and store them in a list
leds = [Pin(pin, Pin.OUT) for pin in pins] #loop makes all pins as output pins in one variable

# Function to blink all LEDs
def blink_leds():
    for i in range(5):  # Repeat the blink pattern 5 times
        for led in leds:  # Turn all LEDs on
            led.value(1)
        sleep(0.5)  # Keep LEDs on for 0.5 seconds
        for led in leds:  # Turn all LEDs off
            led.value(0)
        sleep(0.5)  # Keep LEDs off for 0.5 seconds

# Call the function to start blinking
blink_leds()