> I find it really handy to find useful libraries in an unfamiliar language. I needed to deal with some network addresses in python, it introduced me to the ipaddress module. I'm not a software developer, I certainly don't keep up with the latest developments (which I'd define as anything post matts-script-archive), so things like that are valuable.

That's correct. It has been many times helpful to me as well. But that's fundamentally because a google search for the same thing will be SEOd to death by blogspam sites listing top 100 python libraries.