Does 10 years ago count as "until recently"? Below is Tornado, an async-based web server. https://github.com/tornadoweb/tornado/tree/branch1.2/tornado https://

Does 10 years ago count as "until recently"? Below is Tornado, an async-based web server. https://github.com/tornadoweb/tornado/tree/branch1.2/tornado https://github.com/tornadoweb/tornado/tree/branch1.2/tornado That's the earliest I could find off the top of my head - But the other comment responding to you found an even earlier one where they mention the "select" feature that was added sometime around 1998 (22 years ago). The twisted async networking library seems to have been released/started at least 13-14 years ago as well. I think we all (myself included) kinda forget or underestimate how old Python really is.