For fellow programmers, comprehending the flow of control within generators can be complicated and counter-intuitive since it involves a lot of back-and-forth between the caller and the generator. Knowing what exact code is running at any specific point may be difficult to determine and so it is advisable to keep your generators short and ensure that they yield consistently—in other words, don't have too many different pathways of yielding within your generators and generally attempt to keep cyclomatic complexity quite low (you can read more about this if you skip ahead to the Handling cyclomatic complexity section).