paramiko download from linux server

paramiko_download_linux.py

import paramiko
import os


ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
IP = "***********"
# port = 22
# user = "riic"
# key = "/Users/zhangjiawei/.ssh/id_dsa_138_jwzhang.jwzhang"
ssh.connect(IP, port=22, username='riic', password='****')
# stdin, stdout, stderr = ssh.exec_command('qstat -a')
stdin, stdout, stderr = ssh.exec_command('qstat -a')
# print stdout.read()
sftp = paramiko.SFTPClient.from_transport(ssh.get_transport())
work_path = "/home/riic/gdata/jwzhang/ml/surfacedos"
ml = sftp.listdir(work_path)
for i in ml:
    dos_remote = work_path + "/" + i + "/step2/OUTCAR"
    dos_local  = "/Users/zhangjiawei/Desktop/NiPdata/NiP/dos/outcar/OUTCAR_" + i
    sftp.get(dos_remote, dos_local)