Connection Management and CLI Scraping
Netmiko
Netmiko is a Python library based on paramiko and aimed to simplify SSH access to network devices. Created by Kirk Byers in 2014 this Python library stays the most popular and widely used tool for managing SSH connections to network devices.
Scrapli
Scrapli is a somewhat new python library (first release in 2019) that solves the same problems as Netmiko but aims to be "as fast and flexible as possible".