In this chapter, you learned how Petrel makes it possible to develop Storm topologies in pure Python. We created and ran a simple topology, and you learned how it works. You also learned how to use Petrel's --venv self option and Python logging to streamline your development and debugging process.
In the next chapter, we will see some more complex topologies, including a spout that reads from a real-world data source (Twitter), rather than randomly generated data.