Python generators do conform to the academic definition of coroutines. Specifically, they are stackless, asymmetric, coroutines. Which is somewhat nerfed and second rate, in my opinion, but that's Python for you.

I agree with you, as anyone should, that goroutines aren't coroutines at all. Preëmptive scheduling is disqualifying. I'm confident that the cute name was intended to convey "these aren't coroutines at all" but that was somewhat lost in the translation.