This video introduces an advanced topic that is completely optional and is not relevant to the final assignment. If you Google Python and coroutines, you will get something very different than what we have discussed in this video series. That is because, since Python 3.5, Python has developed a newer way of writing coroutines, which are called native coroutines. In this video we talk about how these relate to the coroutines that we have taught you, and why they are not always better.