[docs] [issue27747] Broken example in the queue module documentation

[R. David Murray]

R. David Murray added the comment:

The example looks correct to me.  Have you tested it and seen it hang?

The q.join() is done, and returns once all the puts have been processed.  *Then* None is put for each worker, which terminates the worker thread.  There's no q.join() to block at that point.

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nosy: +r.david.murray

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