Question about official API

[Frank Millman]

> "Lutz Horn"  wrote in message 
> news:BLU178-W1837247AF25E5755AF69EB9ED20 at phx.gbl...

> Hi,
>
> > What is the rule for knowing if something is part of the official API?
>
> Look into https://docs.python.org/3/library/
>

Thanks for the link, Lutz. Unfortunately I may have asked the wrong 
question.

In my specific case, how do I know if it is safe to use the attribute 
'unfinished_tasks' in the class queue.Queue?

It could be that it is intended for use, but has been omitted from the 
documentation in error.

Based on Ben's response I will raise an issue. At least that will settle the 
question one way or the other.

Frank