Send Linux machine heartbeat to a supervisor on GAE

heartbeat_linux.py

#!/usr/bin/python

import commands
import httplib
from urllib import urlencode
import time

servername = 'MrPenguin'

data = commands.getoutput('df -h') + "\r\n\r\n" + "Uptime: " + commands.getoutput('uptime') + "\r\nDate: " + commands.getoutput("date -R") + "\r\n\r\n"
utc_date_str = time.strftime("%Y-%m-%d %H:%M:%S", time.gmtime())

params = dict([
              ['servername',servername],
              ['uptime', commands.getoutput('uptime')],
              ['serverdate',commands.getoutput('date -R')],
              ['pyserverdate',utc_date_str],
              ['freesysdisk',commands.getoutput('df -h / | tail -n 1')],
              ['fullreport',data]])

h = httplib.HTTPConnection("***************.appspot.com")
h.request("POST","/post", urlencode(params))
res = h.getresponse()
#print res.status, res.reason