[3.12] gh-117534: Add checking for input parameter in iso_to_ymd (GH-117543) #117689
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Moves the validation for invalid years in the C implementation of the
datetime
module into a common location betweenfromisoformat
andfromisocalendar
, which improves the error message and fixes a failed assertion when parsing invalid ISO 8601 years using one of the "ISO weeks" formats.(cherry picked from commit d5f1139)
Co-authored-by: Vlad4896 [email protected]
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>