python执行shell获取硬件参数写入mysql的方法

@author: liufei
'''
#coding=utf-8
import time,sched,os,string
from datetime import datetime
import MySQLdb
 
s = sched.scheduler(time.time,time.sleep)

def event_func():
    try:
        #主机名
        name = os.popen(""" hostname """).read()
        #cpu数目
        cpu_num = os.popen(""" cat /proc/cpuinfo | grep processor | wc -l """).read()
        #内存大小
        mem = os.popen(""" free | grep Mem | awk '{print $2}' """).read()
        #机器品牌
        brand = os.popen(""" dmidecode | grep 'Vendor' | head -1 | awk -F: '{print $2}' """).read()
        #型号
        model = os.popen(""" dmidecode | grep 'Product Name' | head -1 | awk -F: '{print $2}' """).read()
        #磁盘大小
        storage = os.popen(""" fdisk -l | grep 'Disk /dev/sd' | awk 'BEGIN{sum=0}{sum=sum+$3}END{print sum}' """).read()
        #mac地址
        mac = os.popen(""" ifconfig -a | grep HWaddr | head -1 | awk '{print $5}' """).read()
       
        name = name.replace("n","").lstrip()
        cpu_num =  cpu_num.replace("n","").lstrip()
        memory_gb = round(string.atof(mem.replace("n","").lstrip())/1000.0/1000.0,1)
        brand = brand.replace("n","").lstrip()
        model = model.replace("n","").lstrip()
        storage_gb = storage.replace("n","").lstrip()
        mac = mac.replace("n","").lstrip()
       
        print name
        print cpu_num
        print memory_gb
        print storage_gb
        print brand
        print model
        print mac
   
        conn=MySQLdb.connect(host='xx.xx.xx.xx',user='USERNAME',passwd='PASSWORD',db='DBNAME',port=3306)
        cur=conn.cursor()
        cur.execute('select mac from servers where mac=%s',mac)
        data = cur.fetchone()

        if data is None:
            value = [name,brand,model,memory_gb,storage_gb,cpu_num,mac,datetime.now(),datetime.now()]
            cur.execute("insert into servers(name,  created_at,updated_at) values(%s,%s,%s)",value)           
        else:
            value1 = [name,mac]
            cur.execute("update servers set name=%s,brand=%s,model=%s,memory_gb=%s,storage_gb=%s,cpu_num=%s,updated_at=%s where mac=%s",value1)
          
        conn.commit()
        cur.close()
        conn.close()
       
    except MySQLdb.Error,e:
        print "Mysql Error %d: %s" % (e.args[0],e.args[1])
   
def perform(inc):
    s.enter(inc,perform,(inc,))
    event_func()
   
def mymain(inc=10):
    s.enter(0,))
    s.run()
 
if __name__ == "__main__":
    mymain()