python 获取内存的状态

#!/usr/bin/env python

import subprocess

try:
import simplejson as json
except:
import json

memory_status = {}

p = subprocess.Popen("dmidecode --type system | perl -alne '/Manufacturer:\s(.*)/ and print $1'", shell=True, stdout=subprocess.PIPE)
vender = p.stdout.readline().strip()

if vender == 'HP':
mem_slot = []
mem_status = []
p = subprocess.call("rpm -qa | grep hp-health", shell=True, stdout=subprocess.PIPE)
if p != 0:
subprocess.call("rpm -ivh http://downloads.linux.hp.com/downloads/ManagementComponentPack/centos/6/x86_64/9.40/hp-health-9.40-1602.44.rhel6.x86_64.rpm", shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

p = subprocess.Popen("hpasmcli -s 'show dimm'", shell=True, stdout=subprocess.PIPE)
for line in p.stdout.readlines():
a = {}
data = line.strip().split(":")
if len(data) == 2:
a[data[0].strip()] = data[1].strip()

if 'Status' in a.keys():
status = a['Status']
if status == "Ok":
status = 0
mem_status.append(status)

length = len(mem_status)
if length:
for i in range(0, length):
slot = "slot_%d"  % (i)
mem_slot.append(slot)

memory_status = dict(zip(mem_slot, mem_status))
else:
mem_slot = []
mem_status = []
p = subprocess.Popen("omreport chassis Memory", shell=True, stdout=subprocess.PIPE)
for line in p.stdout.readlines():
a = {}
data = line.strip().split(":")
if len(data) == 2:
a[data[0].strip()] = data[1].strip()

if 'Index' in a.keys():
if a['Index']:
slot = "slot_" + a['Index']
mem_slot.append(slot)
elif 'Status' in a.keys():
status = a['Status']
if status != "Unknown" and status == "Ok":
status = 0
mem_status.append(status)

memory_status = dict(zip(mem_slot, mem_status))

print json.dumps(memory_status, indent=4)