In the previous post we covered the ftplib module in Python, which you can read
more about here. In this post we will cover the pysftp module.
SFTP (Secure File Transfer Protocol) is used for securely exchanging files
over the Internet.
什么是pysftp
pysftp is an easy to use sftp module that utilizes paramiko and pycrypto.
It provides a simple interface to sftp.
Some of the features are:
Gracefully handles both RSA and DSS private key files automatically
Supports encrypted private key files.
Logging can now be enabled/disabled
Why should I use it?
When you want to securely exchange files over the Internet.
How do I install it?
pysftp is listed on PyPi and can be installed using pip.
Search for pysftp
pip search pysftp
pysftp # - A friendly face on SFTP
Install pysftp
pip install pysftp
How do I use it?
Using pysftp is easy and we will show some examples on how you can use it
List a remote directory
To connect to our FTP server, we first have to import the pysftp module and
specify (if applicable) server, username and password credentials.
After running this program, you should see all the files and directories of
the current directory of your FTP server.
import pysftp
Prints out the directories and files, line by line
for i in data:
print i
Connection parameters
Arguments that are not given are guessed from the environment.
Parameter Description
host The Hostname of the remote machine.
username Your username at the remote machine.(None)
private_key Your private key file.(None)
password Your password at the remote machine.(None)
port The SSH port of the remote machine.(22)
private_key_pass password to use if your private_key is encrypted(None)
log log connection/handshake details (False)
Download / Upload a remote file
As in the previous example we first import the pysftp module and specify
(if applicable) server, username and password credentials.
We also import the sys module, since we want the user to specify the file to
download / upload.
import pysftp
import sys
Defines the name of the file for download / upload
原文链接：http://www.pythonforbeginners.com/modules-in-python/python-secure-ftp-module
Python的安全FTP模块
概述
In the previous post we covered the ftplib module in Python, which you can read more about here. In this post we will cover the pysftp module.
SFTP (Secure File Transfer Protocol) is used for securely exchanging files over the Internet.
什么是pysftp
pysftp is an easy to use sftp module that utilizes paramiko and pycrypto.
It provides a simple interface to sftp.
Some of the features are:
Supports encrypted private key files.
Logging can now be enabled/disabled Why should I use it? When you want to securely exchange files over the Internet. How do I install it? pysftp is listed on PyPi and can be installed using pip.
Search for pysftp
pip search pysftp
pysftp # - A friendly face on SFTP
Install pysftp
pip install pysftp How do I use it? Using pysftp is easy and we will show some examples on how you can use it List a remote directory To connect to our FTP server, we first have to import the pysftp module and specify (if applicable) server, username and password credentials.
After running this program, you should see all the files and directories of the current directory of your FTP server. import pysftp
srv = pysftp.Connection(host="your_FTP_server", username="your_username", password="your_password")
Get the directory and file listing
data = srv.listdir()
Closes the connection
srv.close()
Prints out the directories and files, line by line
for i in data: print i Connection parameters Arguments that are not given are guessed from the environment. Parameter Description host The Hostname of the remote machine. username Your username at the remote machine.(None) private_key Your private key file.(None) password Your password at the remote machine.(None) port The SSH port of the remote machine.(22) private_key_pass password to use if your private_key is encrypted(None) log log connection/handshake details (False) Download / Upload a remote file As in the previous example we first import the pysftp module and specify (if applicable) server, username and password credentials.
We also import the sys module, since we want the user to specify the file to download / upload. import pysftp import sys
Defines the name of the file for download / upload
remote_file = sys.argv[1]
srv = pysftp.Connection(host="your_FTP_server", username="your_username", password="your_password")
Download the file from the remote server
srv.get(remote_file)
To upload the file, simple replace get with put.
srv.put(remote_file)
Closes the connection
srv.close() What's the next step? Play around with the script, change things and see what happens.
Try add error handling to it. What happens if no argument is passed?
Add some interaction to the program by prompting for input. Sources
https://code.google.com/p/pysftp/ http://en.wikipedia.org/wiki/SSH_File_Transfer_Protocol