[issue40825] Add a "strict" parameter to csv.writer and csv.DictWriter

[Dong-hee Na]

Dong-hee Na <donghee.na92 at gmail.com> added the comment:

I am +1 on with strict mode.
But I want to hear other core developers opinions.

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nosy: +corona10, serhiy.storchaka

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40825>
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