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Chapter Summary
This chapter delved into the basics of module coding tools—the import and from statements, and the reload call. We learned how the from statement simply adds an extra step that copies names out of a file after it has been imported, and how reload forces a file to be imported again without stopping and restarting Python. We also surveyed namespace concepts, saw what happens when imports are nested, explored the way files become module namespaces, and learned about some potential pitfalls of the from statement.
Although we’ve already seen enough to handle module files in our programs, the next chapter extends our coverage of the import model by presenting package imports—a way for our import statements to specify part of the directory path leading to the desired module. As we’ll see, package imports give us a hierarchy that is useful in larger systems and allow us to break conflicts between same-named modules. Before we move on, though, here’s a quick quiz on the concepts presented here.
