Schoolbus LED script

leds.py

#!/usr/bin/env python
# Randomly change LED lights on schoolbus

import sys, random, time

def main():
    while True:
        fh = open('/dev/led', 'w')
        fh.write(random.choice(('shutdown', 'fault on', 'fault off', 'ready on')) + '\n')
        fh.close()
        time.sleep(random.randint(1, 10))

if __name__ == '__main__':
    main()