Python has become a core tool for network engineers to automate repetitive tasks, manage multi-vendor environments, and improve operational efficiency. By leveraging libraries like Paramiko, Netmiko, NAPALM, Scapy, and Nornir, engineers can execute configurations, retrieve device data, and perform large-scale changes with minimal manual intervention.

Example – Automating Cisco Device Configuration with Netmiko

This script securely connects to a Cisco router, enters configuration mode, applies interface settings, and prints the result.

Key Libraries and Use Cases