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

[Berker Peksag]

Berker Peksag <berker.peksag at gmail.com> added the comment:


New changeset a645b23ffc76073a2eb4e77b88cb7648cfc6ef77 by Berker Peksag in branch '3.6':
bpo-30456: Clarify example for duplicates in second argument of isinstance (GH-1699)
https://github.com/python/cpython/commit/a645b23ffc76073a2eb4e77b88cb7648cfc6ef77


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