[docs] [issue37004] SequenceMatcher.ratio() noncommutativity not well-documented

[Tim Peters]

Change by Tim Peters <tim at python.org>:


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resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed
versions: +Python 3.7, Python 3.8, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37004>
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