paramiko python 多台机器for linux

#!/usr/bin/python2
# coding:utf-8
import paramiko
import sys

class Linux(object):
    # 通过IP, 用户名，密码，超时时间初始化一个远程Linux主机
    def __init__(self, ip, username, password, timeout=30):
        self.ip = ip
        self.username = user
        self.password = passwd
        self.timeout = timeout
        # transport和chanel
        self.t = ''
        self.chan = ''
        # 链接失败的重试次数
        self.try_times = 3

    def ssh_cmd(self, cmd):
        try:
            ssh = paramiko.SSHClient()
            ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
            ssh.connect(self.ip,22,self.username,self.password,timeout=5)
            stdin,stdout,stderr = ssh.exec_command(cmd)
            print(stdout.read())
            # print(' ===== :: %s OK\n'%(ip))
            ssh.close()
        except Exception,e:
            print('%s  Error:: %s \n' %(ip, e))

    def sftp_put(self, localfile, remotefile):
            t = paramiko.Transport(sock=(self.ip, 22))
            t.connect(username=self.username, password=self.password)
            sftp = paramiko.SFTPClient.from_transport(t)
            sftp.put(localfile, remotefile)
            t.close()

if __name__ == "__main__":
    args = sys.argv[1:]
    print "args === ", args
    ip_str = '10.33.81.'
    user = 'root'
    passwd = 'apoidea_ceph'
    remotefile = r'/usr/local/bin/daemo.py'
    localfile = r'/data/ansible/ansible_test/daemo.py'
    num = 1
    for i in range(160,172):
        ip = ip_str + str(i)
        print num,"=====",ip
        num += 1
        host = Linux(ip, user, passwd)
    if args[0] == "copy":
            host.sftp_put(localfile,remotefile)
    elif args[0] == "cmd":
            cmd = args[1]
            host.ssh_cmd(cmd)