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

print("Hello, Pi Pico!")
import machine
import utime 
led1=machine.Pin(15,machine.Pin.OUT) 
led2=machine.Pin(17,machine.Pin.OUT) 

while True: 
    led1.value(1) 
    led2.value(0)
    utime.sleep(1) 

    led1.value(0) 
    led2.value(1)
    utime.sleep(1)