Lesson 4 contains a variety of subjects to help you use Python more effectively as a GIS analyst. The sections of this lesson will reinforce what you've learned already, while introducing some new concepts that will help take your automation to the next level.
You'll learn now to modularize a section of code to make it usable in multiple places. You'll learn how to use new Python modules, such as os, to open and read files; then you'll transfer the information in those files into geographic datasets that can be read by ArcGIS. Finally, you'll learn how to use your operating system to automatically run Python scripts at any time of day.