Python 批量修改root密码

#_*_coding:utf8_*_
from multiprocessing import Process, Pool
import paramiko
import sys,os

host_list = (
    ('192.168.1.91', 'root','',123456),
    ('192.168.1.93', 'root', '',123456),

)

s = paramiko.SSHClient()  #绑定实例
s.load_system_host_keys()   #加载本机HOST主机文件
s.set_missing_host_key_policy(paramiko.AutoAddPolicy())
def ssh_run(host_info):
    ip,username,password,newpassword = host_info
    s.connect(ip,22,username,password,timeout=5)   #连接远程主机
    stdin,stdout,stderr=s.exec_command('echo %s | passwd --stdin root'%(newpassword))
    #stdin,stdout,stderr=s.exec_command('df')
    cmd_result = stdout.read(),stderr.read()      #读取命令结果
    print '\033[32;1m-------------%s-----------\033[0m' % ip, username
    for line in cmd_result:
        print line,

p = Pool(processes=2)

result_list = []

for h in  host_list:
    result_list.append(p.apply_async(ssh_run, [h,])  )

for res in result_list:
    res.get()
s.close()