[issue29762] Use "raise from None"

[Serhiy Storchaka]

Serhiy Storchaka added the comment:


New changeset 5affd23e6f42125998724787025080a24839266e by Serhiy Storchaka in branch 'master':
bpo-29762: More use "raise from None". (#569)
https://github.com/python/cpython/commit/5affd23e6f42125998724787025080a24839266e


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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29762>
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