To summarize, in this chapter, we covered two of the most popular and common tools used by Python developers trying to make sense of the numbers returned by profilers such as cProfile. We analyzed the old code under this new light. We even got to analyze some new code.

In the next chapter, we'll start talking about optimization in more detail. We will cover some of the things we've already seen in practice and some recommendations of good practices when profiling and optimizing code.