Summary

In this chapter, we learned how to create a Python package as a directory on the filesystem and how to mark it with an __init__.py file, so that importing is efficient and we can add package metadata. We looked at adding code modules to a package. We saw how code modules within the same package interact.

We learned how to put together a Python code package that can be used in a program or distributed to other programmers. Soon, we'll see how to turn a package into a complete program as well. In the next chapter, we'll step back a little bit and talk about some best practices for working with Python code.