Python获取系统信息的代码详解编程语言

import os,inspect,socket,time,pymysql 
num = 0 
class Mysql: 
    def __init__(self,host,user,password,db): 
        self.cnn = pymysql.connect(host=host,user=user, passwd=password, db=db, charset='utf8') 
        self.cur= self.cnn.cursor() 
  
    def run(self,sql): 
        self.cur.execute(sql) 
  
    def cmd(self,sql): 
        self.cur.execute(sql) 
        return self.cur.fetchall() 
  
    def commit(self): 
        self.cnn.commit() 
  
    def close(self): 
        self.cur.close() 
        self.cnn.close() 
  
class mon: 
    def __init__(self): 
        self.db_file='./db.json' 
        self.data={} 
  
    def getAmber(self): 
        global num 
        num+=1 
        return num 
  
    def getDate(self): 
        return time.strftime('%Y-%m-%d %H:%M:%S',time.localtime()) 
  
    def getProcess(self): 
        return os.popen('ps -ef |wc -l').readlines()[0].split()[0] 
  
    def getDisk(self): 
        return os.popen("df -m |grep '/$'").readlines()[0].split() 
  
    def getMem(self): 
        return os.popen('free -m').readlines()[1].split()[1:4] 
  
    def getSwap(self): 
        return os.popen('free -m').readlines()[3].split()[1:] 
  
    def getLoad(self): 
        return os.popen('uptime').readlines()[0].split()[-3:] 
  
    def getHost(self): 
        return socket.gethostname() 
  
    def getUser(self): 
        return os.popen('uptime').readlines()[0].split()[3] 
  
    def getRuntime(self): 
        return os.popen('uptime').readlines()[0].split()[2] 
  
    def getSystem(self): 
        return os.popen('cat /etc/redhat-release').readlines()[0].split('/n')[0] 
  
    def getKerner(self): 
        return os.popen('uname -r').readlines()[0].split('/n')[0] 
  
  
    def run(self): 
        for fun in inspect.getmembers(self,predicate=inspect.ismethod): 
            if fun[0][:3] == 'get': 
                #print fun[1]() 
                self.data[fun[0][3:]] = fun[1]() 
        #print self.data 
        return self.data 
        #file(self.db_file,'a').write("%s/n" % self.data) 
        time.sleep(15) 
if __name__ == "__main__": 
    mysql=Mysql('192.168.0.58','root','123456','host') 
    while 1: 
        res= mon().run() 
        memTotal=int(res['Mem'][0]) 
        diskTotal=int(res['Disk'][0]) 
        memFree=int(res['Mem'][2]) 
        diskFree=int(res['Disk'][2]) 
        cpuPercent=int(res['Process']) 
        ip=os.popen("ifconfig |grep  'Bcast' |awk -F: '{print $2}'").readlines()[0].split()[0] 
        print('-------------------',ip) 
        ress=mysql.cmd('select * from hostinfo where ip="%s"'%ip) 
        ress=list(ress[0]) 
        for i in ress[3:]: 
            lists=eval(i) 
            print(lists) 
            lists['data'].pop(0) 
            lists['data'].append(eval(lists['name'])) 
            sqls='update hostinfo set %s = "%s" where ip="%s"'%(str(lists['name']),lists,ip) 
            mysql.cmd(sqls) 
        mysql.commit() 
        print('------------------------------------------------') 
        time.sleep(30)