Python for Network Engineers: Where to Start
Python is the dominant language for network automation — readable, huge library ecosystem, and the default for Cisco's automation tooling. You don't need to become a software engineer; network engineers use a focused subset to automate repetitive device tasks.
Why Python specifically
It's readable enough to learn alongside a networking job, and the networking library ecosystem is mature: Netmiko (simplified SSH to devices), Paramiko (raw SSH), NAPALM (multi-vendor abstraction), and Nornir (automation framework). Cisco's own APIs return data Python handles natively.
What you actually automate
- Pushing the same config to hundreds of devices consistently
- Pulling and parsing operational data (interface status, versions) at scale
- Config backups and compliance checks
- Bulk changes that would take hours by hand
A realistic learning path
1) Python basics (variables, loops, functions, dictionaries — a few weeks). 2) Working with JSON/YAML data. 3) Netmiko to connect to devices. 4) REST APIs and NETCONF for modern platforms. Crucially — learn networking first; automation amplifies knowledge, it can't replace understanding what you're automating. See the automation engineer career guide.
Frequently asked questions
Do network engineers need to know Python?
Increasingly yes — a focused subset of Python is becoming an expected skill for automating repetitive tasks, though deep software-engineering expertise isn't required.
What Python libraries are used for network automation?
Netmiko and Paramiko for SSH connections, NAPALM for multi-vendor abstraction, and Nornir as an automation framework — plus built-in handling of JSON from APIs.
Should I learn networking or Python first?
Networking first — automation amplifies networking knowledge. You need to understand what you're configuring before automating it across hundreds of devices.
Is Python hard for network engineers to learn?
The subset used for automation is very approachable — readable syntax and task-focused libraries mean you can automate real work within weeks, not years.
Related articles
Want hands-on training?
Learn this on real Cisco lab devices with placement support at Attila Technologies, Ahmedabad.