stupid fan and heat

#!/usr/bin/env python

import time
import subprocess
import datetime

while True:
    tout = subprocess.check_output(["acpi", "-t"])
    with open("/home/m/devel/sammox/laptop_temp", "w") as f:
        f.write("{} {}".format(str(datetime.datetime.now()), tout))
    temp = float(tout.split(", ")[1].split(" ")[0])
    if temp > 65 and temp < 68:
        subprocess.Popen("echo level 5 > /proc/acpi/ibm/fan", shell=True)
    elif temp > 67 and temp < 69:
        subprocess.Popen("echo level 6 > /proc/acpi/ibm/fan", shell=True)
    elif temp > 69:
        subprocess.Popen("echo level full-speed > /proc/acpi/ibm/fan", shell=True)
    else:
        subprocess.Popen("echo level auto > /proc/acpi/ibm/fan", shell=True)
    time.sleep(3)