[docs] [issue19376] document that strptime() does not support the Feb 29 if the format does not contain the year

[abhishek]

Change by abhishek <abhishek4bhopati at gmail.com>:


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keywords: +patch
pull_requests: +9556
stage:  -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue19376>
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