Twisted has been supporting asynchronous / event driven applications way before asyncio. Twisted, and Glyph, have also been encouraging automated tests for a very long time. Twisted uses a technique that should be usable by other applications, even those using asyncio or other event driven architectures. Full Transcript Special Guest: Glyph. Sponsored By: Rollbar: Rollbar enables developers to proactively discover and resolve issues in their code, so they can work on continuous code improvement throughout the software development lifecycle. Learn more at Rollbar.com Links: Community Service Award Recipient Glyph Lefkowitz — The PSF article I was referring to early in the episode Twistedtwisted/kleintwisted/treqdjango/daphne — Django Channels HTTP/WebSocket serverScrapySo Easy You Can Even Do It in JavaScript: Event-Driven Architecture for Regular Programmers - YouTubeFeature test - twitter engineeringPython Testing with pytest — Some reading for Glyph if he wants to learn to love pytestpytest-twistedpygamePyodideBrython