import pyfirmata
import time
board = pyfirmata.Arduino('/dev/ttyACM0')
while True:
	board.digital[13].write(1)
	time.sleep(1)
        board.digital[13].write(0)
        time.sleep(1)

0cdf034e57dc3c6c3f2cfe52411e3e74d5179dac
import pyfirmata
import time
board = pyfirmata.Arduino('/dev/ttyACM0')
while True:
	board.digital[13].write(1)
	time.sleep(1)
        board.digital[13].write(0)
        time.sleep(1)
