I am often asked which Python book I recommend. Here is a good one: https://amzn.to/2E2x5bL Network Programmability and Automation: Skills for the Next-Generation Network Engineer

This book covers:
Python programming basics: data types, conditionals, loops, functions, classes, and modules
Linux fundamentals to provide the foundation you need on your network automation journey
Data formats and models: JSON, XML, YAML, and YANG for networking
Jinja templating and its applicability for creating network device configurations
The role of application programming interfaces (APIs) in network automation
Source control with Git to manage code changes during the automation process
How Ansible, Salt, and StackStorm open source automation tools can be used to automate network devices
Key tools and technologies required for a Continuous Integration (CI) pipeline in network operations