Python 3.11 Task Groups

The idea is that sometimes you have a situation where you did several things and maybe more than one of them raised an exception. And now you need to report that there was more than one error in whatever you did. So the motivation was, yeah, we have task groups in Python 3.11, which are kind of like Trio nurseries, kind of a structured collection of asynchronous tasks. The PEP lists a bunch of examples of where this can happen.