There is a specific question this change attempts to answer: "Where is the module I imported located in the file system?"

I suspect this comes up a lot because developers want to inspect or mess with installed modules, add debug output and the like, to understand some of their development issues better.

The site module documentation explains the details.[3] The paragraph the change adds links to that documentation. That should be sufficient (for a tutorial); other technical details probably fit well in the document being linked to.

[3] https://docs.python.org/3/library/site.html#site.getusersitepackages

I tried to keep it concise, adding value with a quick glance over the `site` module features that relate to the module paths topic.