import time
time.sleep(0.1) # Wait for USB to become ready
from machine import Pin 

Blue = Pin (2,Pin.OUT)
Pink = Pin(5,Pin.OUT)
if __name__=='__main__':
    while True:
        Blue.on()
        time.sleep(1)
        Blue.off()
        Pink.on()
        time.sleep(1)
        Pink.off()