bright

#!/usr/bin/python3
# change brightness level on all monitors simultaneously on linux ubuntu

import os
import re
from sys import argv

try:
    command = argv[1]
    if command == "+" or command == "-":
        brightness_level = os.popen("xrandr --verbose | grep -m 1 -i brightness | cut -f2 -d ' '").read()
        brightness_level = float(brightness_level)
        print(brightness_level)
        if command == "+":
            brightness_level += 0.03
        elif command == "-":
            brightness_level -= 0.03
        print(brightness_level)
    else:
        brightness_level = float(command)
except IndexError:
    brightness_level = 1.0

if brightness_level <= 0:
    brightness_level = 0.1

xrandr_lines = os.popen("xrandr").read()
outputs = re.findall(r'([\-\w]+) connected', xrandr_lines, re.M)
#print(outputs)
for output in outputs:
    os.popen("xrandr --output " + output + " --brightness " + str(brightness_level))