Not fully understanding the role of Queue.task_done()

[Fredrik Lundh]

Martin DeMello wrote:

> Reading up on python's built in Queue class, though, it seems oriented
> towards "job queues", with a two-step dequeue operation (get() and
> task_done()). I'm worried that this would make it too heavyweight for
> my application. Is ther documentation somewhere on what exactly
> task_done() does, and whether I can disable the tracking of a job once
> it's removed from the queue? The python docs for the Queue module were
> a bit light.

"task_done" just decrements a counter (incremented by "put").  when the 
counter reaches zero, the "join" call is unblocked.

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