Getting rrdcached statistics from zenoss in a zencommand datasource

gistfile1.py

#!/usr/bin/env python

import socket,os

try:
    zenhome = os.environ['ZENHOME']

    s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
    s.connect(zenhome + "/var/rrdcached.sock")
    s.send('STATS\n')
    data = s.recv(1024)
    s.close()

    lines = data.splitlines()[1:]
    stats = {}
    for line in lines:
        key, value = line.split(" ", 1)
        stats[key[:len(key)-1]] = int(value)

    for key, value in stats.items():
        print "%s=%d" %(key, value)

except:
    sys.exit(1)