paramiko exec_command 返回 shell 脚本 exit 值

import paramiko  

  

hostname = '121.40.100.198'  

port = 22  

username = 'root'  

key_file = '/root/.ssh/id_rsa'  

key = paramiko.RSAKey.from_private_key_file(key_file) 

s = paramiko.SSHClient()  

s.load_system_host_keys()  

s.connect(hostname,port,username,pkey=key)  

stdin,stdout,stderr = s.exec_command('/bin/bash /root/auto_run/publish81.sh') 

channel = stdout.channel

status = channel.recv_exit_status()

print status