Yeah that’s a valid point. I tend to have in mind that as soon as I pull any of the inner functions out to the publicly visible module level I can say goodbye

Yeah that’s a valid point. I tend to have in mind that as soon as I pull any of the inner functions out to the publicly visible module level I can say goodbye to ever trying to stop people reusing the code when I don’t really want them to. For example, if your function has an implicit, undocumented contract such as assuming the DB is only a few milliseconds away, but they then reuse the code for logging to DBs over the internet, then they find it’s slow and speed it up with caching. Now your DB writing code has to suffer their cache logic bugs when it didn’t have to.