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[3.12] gh-117534: Add checking for input parameter in iso_to_ymd (GH-117543) (#117689)

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gh-117534: Add checking for input parameter in iso_to_ymd (GH-117543)

Moves the validation for invalid years in the C implementation of the `datetime` module into a common location between `fromisoformat` and `fromisocalendar`, which improves the error message and fixes a failed assertion when parsing invalid ISO 8601 years using one of the "ISO weeks" formats.

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(cherry picked from commit d5f1139c79)

Co-authored-by: Vlad4896 <166005126+Vlad4896@users.noreply.github.com>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
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Miss Islington (bot) 2024-04-09 20:17:21 +02:00 • committed by GitHub
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4 changed files with 16 additions and 7 deletions
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Lib/test/datetimetester.py
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@ -1908,6 +1908,10 @@ class TestDate(HarmlessMixedComparison, unittest.TestCase):
'2009-02-29', # Invalid leap day
'2019-W53-1', # No week 53 in 2019
'2020-W54-1', # No week 54
'0000-W25-1', # Invalid year
'10000-W25-1', # Invalid year
'2020-W25-0', # Invalid day-of-week
'2020-W25-8', # Invalid day-of-week
'2009\ud80002\ud80028', # Separators are surrogate codepoints
]