[issue42070] I think the rationale to keep IsoCalendarDate private from the pickle perspective should get revisited

[Karthikeyan Singaravelan]

Change by Karthikeyan Singaravelan <tir.karthi at gmail.com>:


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nosy: +belopolsky, p-ganssle

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42070>
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