[issue47145] Improve graphlib.TopologicalSort by removing the prepare step

[Larry Hastings]

Larry Hastings <larry at hastings.org> added the comment:

Having slept on it, I think the footgun is slightly bigger than I gave it credit for.  Also the problem of nodes lingering forever is easily solved: give the user control.

My next iteration will keep the done nodes around, but I'll also add a forget() method that compels the graph to forget all done nodes.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue47145>
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