Home > Article > Backend Development > How to perform SCP file transfers in Python using Paramiko?
Question:
How can I perform SCP file transfers in Python using a clean and efficient approach? The os.system() method is a hack and doesn't work cross-platform or handle passwordless SSH.
Paramiko SCP Module:
Paramiko provides an excellent Python module specifically designed for SCP transfers: the paramiko.scp.SCPClient. It offers a user-friendly interface for secure operations.
Example Usage:
<code class="python">import paramiko from scp import SCPClient # Establish SSH Connection ssh = createSSHClient(server, port, user, password) # Initialize SCP Client scp = SCPClient(ssh.get_transport()) # SCP Operations scp.get('/etc/local/filename', '/etc/remote/filename') # Server to Local scp.put('/etc/local/filename', '/etc/remote/filename') # Local to Server</code>
Key Management:
The createSSHClient() function supports key management through the load_system_host_keys() and set_missing_host_key_policy() methods. Additionally, the SCPClient() constructor allows specifying the key file path or using system keys:
<code class="python"># Use System Keys client = scp.Client(host=host, user=user, keyfile=keyfile) # Use Password client = scp.Client(host=host, user=user, password=password)</code>
Benefits:
This approach provides a robust and customizable solution for seamless SCP file transfers in Python.
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