[docs] [issue30456] 2to3 docs: example of fix for duplicates in second argument of isinstance has superfluous parentheses

[Berker Peksag]

Berker Peksag added the comment:


New changeset 26248ef58dcf49619930ffa2e050ffa687a88601 by Berker Peksag (Eli Boyarski) in branch 'master':
bpo-30456: Clarify example for duplicates in second argument of isinstance (GH-1699)
https://github.com/python/cpython/commit/26248ef58dcf49619930ffa2e050ffa687a88601


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nosy: +berker.peksag

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