Auto brightness hack for OSX

auto_brightness.py

# add keyboard brightness

import time
from datetime import datetime

SLEEP_TIME = 0.5

def write(n):
    with open("/sys/class/backlight/gmux_backlight/brightness", "w") as f:
        #print("new", n)
        f.write(str(n))


with open("/sys/class/backlight/gmux_backlight/max_brightness") as f:
    max_v = f.read()

print("running brightness, did you run with root?")
while True:
    with open("/sys/devices/platform/applesmc.768/light") as f:
        v = int(f.read()[1:-1].split(",")[0])
    #print("old", v)
    if v < 10:
        # do not do comparison constantly
        hour = datetime.now().hour
        if hour > 22 or hour < 8:
            write(100)
        else:
            write(300)
    else:
        write(max_v)
    time.sleep(SLEEP_TIME)