[docs] [issue28929] Provide a link from documentation back to its source file

[Terry J. Reedy]

Terry J. Reedy added the comment:

Nice idea.  I agree with an updated sidebar link, both aesthetically and as a practical matter for doc maintainers.

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nosy: +terry.reedy

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28929>
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