paramiko多线程远程执行命令

import paramiko
import sys
import getpass
import threading
import os

def rcmd(host=None, port=22, user='root', passwd=None, command=None):
    ssh = paramiko.SSHClient()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    ssh.connect(hostname=host, username=user, password=passwd, port=port)
    _, stdout, stderr = ssh.exec_command(command)
    out = stdout.read()
    err = stderr.read()
    if out:
        print('[%s] OUT:
%s' % (host, out.decode()))
    if err:
        print('[%s] ERROR:
%s' % (host, err.decode()))
    ssh.close()

if __name__ == '__main__':
    # rcmd('192.168.4.6', passwd='123456', command='id root; id wangwu')
    if len(sys.argv) != 3:
        print('Usage: %s ipfile "command"' % sys.argv[0])
        exit(1)
    if not os.path.isfile(sys.argv[1]):
        print('No such file:', sys.argv[1])
        exit(2)
        
    ipfile = sys.argv[1]
    command = sys.argv[2]
    password = getpass.getpass()
    with open(ipfile) as fobj:
        for line in fobj:
            ip = line.strip()  # 删除行尾的

            # rcmd(ip, passwd=password, command=command)
            t = threading.Thread(target=rcmd, args=(ip,), kwargs={'passwd': password, 'command': command})
            t.start()