Script to sleep machine based on login idle times

idle.py

#!/usr/bin/python

import datetime
import subprocess
import sys
import time

now = datetime.datetime.now()
if now.hour > 6 and now.hour < 19:
    timeout_hours = 4
else:
    timeout_hours = 1

TIMEOUT = 60 * 60 * timeout_hours

def get_idle():
    w = subprocess.check_output('w -sh | awk \'{print $3}\'', shell=True)
    min_idle = 30 * 24 * 3600
    for line in w.split('\n'):
        if 'm' in line:
            hours, mins = line.split(':')
            secs = 0
            mins = mins.replace('m', '')
            idle = int(hours) * 3600 + int(mins) * 60 + int(secs)
        elif ':' in line:
            try:
                mins, secs = line.split(':')
                hours = 0
            except ValueError:
                hours, mins, secs = line.split(':')
            idle = int(hours) * 3600 + int(mins) * 60 + int(secs)
        elif '.' in line:
            secs, frac = line.split('.')
            idle = int(secs)
        else:
            continue

        if idle < min_idle:
            min_idle = idle

    return min_idle

def sleep():
    with file('/sys/power/state', 'w') as f:
        f.write('mem')
    subprocess.call('nmcli con down id em1', shell=True)
    subprocess.call('nmcli con up id em1', shell=True)

idle = get_idle()
should_sleep = idle > TIMEOUT

try:
    should_sleep = sys.argv[1]
except:
    pass

if should_sleep:
    sleep()