使用paramiko ssh执行命令行设置超时问题？

Question

import paramiko
import socket

client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())

client.connect(hostname='192.168.111.200', port=22, username='root', password='cainiao308')

try:
    stdin, stdout, stderr = client.exec_command('df -h && sleep 3' ,timeout=2)
    这里，如果不加这一行stderr.read()就捕获不到timeout异常，各位大神，有其他优雅的解决方案吗？
    print(stderr.read())
    print(stdout.read())
    status = stdout.channel.recv_exit_status()
    print(status)
except Exception as e:
    if isinstance(e , socket.timeout):
        print(1111111111)
        print(type(e))


client.close()