How to Implement SFTP File Transfer with Python Using Paramiko?

Secure File Transfer Protocol (SFTP) with Python

For secure file transfers, the use of SFTP (Secure File Transfer Protocol) becomes essential. While ftplib is suitable for FTP operations, it lacks support for SFTP. This guide will demonstrate how to implement SFTP functionality within Python using Paramiko, providing a reliable and encrypted file transfer mechanism.

Paramiko is a comprehensive SSH2 implementation library for Python that enables SFTP operations. The following code demonstrates how to establish an SFTP connection and transfer a file:

<code class="python">import paramiko

# Define connection details
host = "server-address"
port = 22
username = "username"
password = "password"

# Establish the connection
transport = paramiko.Transport((host, port))
transport.connect(username=username, password=password)
sftp = paramiko.SFTPClient.from_transport(transport)

# Perform the file transfer
local_path = "/local/path/to/file.txt"
remote_path = "/remote/path/to/file.txt"
sftp.put(local_path, remote_path)

# Close the connection
sftp.close()
transport.close()</code>

This code establishes a secure SFTP connection, uploads a file from the local machine to the remote server, and subsequently closes the connection. The provided code snippet can be easily integrated into any Python script that requires SFTP file transfer capabilities.

By utilizing Paramiko, developers can securely transfer files over a network without compromising data integrity or confidentiality.

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