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gh-122272: Guarantee specifiers %F and %C for datetime.strftime to be 0-padded (GH-122436)

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blhsing 2024-08-23 23:45:03 +08:00 • committed by GitHub
parent 7cd3aa42f0
commit 126910edba
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7 changed files with 145 additions and 14 deletions
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17
Lib/test/datetimetester.py
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@ -1710,13 +1710,22 @@ class TestDate(HarmlessMixedComparison, unittest.TestCase):
(1000, 0),
(1970, 0),
)
for year, offset in dataset:
for specifier in 'YG':
specifiers = 'YG'
if _time.strftime('%F', (1900, 1, 1, 0, 0, 0, 0, 1, 0)) == '1900-01-01':
specifiers += 'FC'
for year, g_offset in dataset:
for specifier in specifiers:
with self.subTest(year=year, specifier=specifier):
d = self.theclass(year, 1, 1)
if specifier == 'G':
year += offset
self.assertEqual(d.strftime(f"%{specifier}"), f"{year:04d}")
year += g_offset
if specifier == 'C':
expected = f"{year // 100:02d}"
else:
expected = f"{year:04d}"
if specifier == 'F':
expected += f"-01-01"
self.assertEqual(d.strftime(f"%{specifier}"), expected)
def test_replace(self):
cls = self.theclass