python 远程统计文件

#!/usr/bin/python
#encoding=utf-8
import time
import os
import paramiko
import multiprocessing

#统计文件数量
def get_total(ip,password,filepath):
    paramiko.util.log_to_file('paramiko.log')
    ssh=paramiko.SSHClient()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    try:
        starttime=time.time()
        ssh.connect(hostname=ip,port=22,username='root',password=password)
        #stdin,stdout,stderr = ssh.exec_command(str(len(os.listdir(filepath))))
        stdin,stdout,stderr = ssh.exec_command('cd filepath ;ls |wc -l')
        #print ip,filepath,stdout.read().strip('\n')
        count=int(stdout.read().strip('\n'))
        endtime=time.time()
        caltime=endtime-starttime
        result=ip+','+filepath.strip('\n')+','+str(count)+','+str(caltime)+'\n'
        return result
    except:
        result=ip+','+filepath.strip('\n')+','+'failed'+'\n'
        return result
#读取ip、密码,ip.csv每一行为192.168.1.1,111111,/var 第一列是ip地址，第二例是密码，第三列是路径iplist=open('ip.csv').readlines()
#存入统计结果
ipresultlist=['IP,FILEPATH,COUNT,TIMECOST\n']
#多进程统计
pool=multiprocessing.Pool(processes=6)
#循环每一行进行统计
for ip in iplist:
    ipin=ip.split(',')
    pool.apply_async(ipresultlist.append(get_total(ipin[0],ipin[1],ipin[2])))
pool.close()
pool.join()
#写入文件
fp=open('tongji_log'+'_'+time.strftime('%Y%m%d%H%M%S',time.localtime())+'.csv','a+')
fp.writelines(ipresultlist)
fp.close()