Python USES sftp to upload and download of instance code

In Python, you can use sftp in paramiko module to log in the remote host and realize upload and download functions.

1. Function realization

According to the input parameters to determine whether the file or directory, upload and download

The local parameter local needs to be sent to the remote parameter remote of type 1, with the file ending in filename and the directory ending in \

Local and remote directories for uploading and downloading need to exist

Exception handling

2. Code implementation

#!/usr/bin/python
# coding=utf-8
import paramiko
import os
def sftp_upload(host,port,username,password,local,remote):
  sf = paramiko.Transport((host,port))
  sf.connect(username = username,password = password)
  sftp = paramiko.SFTPClient.from_transport(sf)
  try:
    if os.path.isdir(local):# Determines whether the local parameter is a directory or a file 
      for f in os.listdir(local):# Search the local directory 
        sftp.put(os.path.join(local+f),os.path.join(remote+f))# Upload files in the directory 
    else:
      sftp.put(local,remote)# Upload a file 
  except Exception,e:
    print('upload exception:',e)
  sf.close()
def sftp_download(host,port,username,password,local,remote):
  sf = paramiko.Transport((host,port))
  sf.connect(username = username,password = password)
  sftp = paramiko.SFTPClient.from_transport(sf)
  try:
    if os.path.isdir(local):# Determines whether the local parameter is a directory or a file 
      for f in sftp.listdir(remote):# Traverse the remote directory 
         sftp.get(os.path.join(remote+f),os.path.join(local+f))# Download the files in the directory 
    else:
      sftp.get(remote,local)# The download file 
  except Exception,e:
    print('download exception:',e)
  sf.close()
if __name__ == '__main__':
  host = '192.168.1.2'# The host 
  port = 22 # port 
  username = 'root' # The user name 
  password = '123456' # password 
  local = 'F:\\sftptest\\'# Local file or directory, with remote 1 To, currently is windows Directory format, window You need to use a double slash in the middle of the directory 
  remote = '/opt/tianpy5/python/test/'# Remote file or directory, with local 1 To, currently is linux Directory format 
  sftp_upload(host,port,username,password,local,remote)# upload 
  #sftp_download(host,port,username,password,local,remote)# download 

3. Summary

The above code to achieve the file and directory upload and download, can upload and download files alone, can also be bulk upload and download files in the directory, basically achieve the desired function, but for the directory does not exist, as well as upload and download to a number of host on the case, still need to be improved.