from machine import Pin
import time
led = Pin(2, Pin.OUT)
status = ("off")
while True:
    status = str(input("on/off"))
    while status == ("on"):
        led.on()
        time.sleep(1)
        led.off()
        time.sleep(1)
        led.on()
        time.sleep(1)
        led.off()
        time.sleep(1)
        led.on()
        time.sleep(1)
        led.off()
        status = str(input("on/off"))