Script to re-suspend laptop that wakes wandomly

#!/usr/bin/python

import re
import time
import subprocess
import syslog

def log(msg):
    syslog.syslog('lidfix: ' + msg)

def is_open():
    with open('/proc/acpi/button/lid/LID0/state', 'r') as f:
        state = f.readline()
        f.close()

    m = re.match(r'state:\s+([a-z]+)', state)

    return m.group(1) == 'open'

while True:
    if not is_open():
        time.sleep(5)
        if not is_open():
            log('Forcing suspend...')
            subprocess.call(['/usr/sbin/pm-suspend'])
            log('Done with pm-suspend.')
        else:
            log('Lid was open the second time.')

    time.sleep(5)