python上传和下载

#!/usr/bin/env python
import paramiko,datetime,os
hostname='192.168.0.102'
username='root'
password='abc123'
port=22
local_dir='/tmp/'
remote_dir='/tmp/test/'
try:
t=paramiko.Transport((hostname,port))
t.connect(username=username,password=password)
sftp=paramiko.SFTPClient.from_transport(t)
#files=sftp.listdir(dir_path)
files=sftp.listdir(remote_dir)
for f in files:
print''
print'#########################################'
print'Beginning to download file from %s %s ' % (hostname,datetime.datetime.now())
print'Downloading file:',os.path.join(remote_dir,f)
sftp.get(os.path.join(remote_dir,f),os.path.join(local_dir,f))#下载
#sftp.put(os.path.join(local_dir,f),os.path.join(remote_dir,f))#上传
print'Download file success %s ' % datetime.datetime.now()
print''
print'##########################################'
t.close()
except Exception:
print"connect error!"