[issue30197] Enhance swap_attr() and swap_item() in test.support

[Serhiy Storchaka]

Serhiy Storchaka added the comment:


New changeset 910ba937e90ffe3aa154a5b27dc7e2c3d3c88d1f by Serhiy Storchaka in branch '3.5':
[3.5] bpo-30197: Enhance functions swap_attr() and swap_item() in test.support. (#1341) (#1346)
https://github.com/python/cpython/commit/910ba937e90ffe3aa154a5b27dc7e2c3d3c88d1f


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<http://bugs.python.org/issue30197>
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