Python for Network Engineers: CCIE Kirk Byers has Python lectures on using REST APIs, testing, and CI. He wrote the netmiko Python library (SSH) and is a maintainer of NAPALM
Sentdex Tutorials: Not really network-related, but the dude has great Python tutorials
Similar Websites
In some cases, the source of “Further Reading” links in some articles.
packetlife.net: CCIE who has great articles that stand the test of time.
dev_dungeon: A “virtual hackerspace” that has hands-on tutorials in various languages. The focus is not on networking, but has packet generation in a couple languages.