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gh-143959: Split datetime tests requiring _datetime #143997

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gh-143959: Split datetime tests requiring _datetime #143997

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gh-143959: Split datetime tests requiring _datetime
VanshAgarwal24036 Jan 18, 2026
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gh-143959: Split datetime tests requiring _datetime
VanshAgarwal24036 Jan 18, 2026
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gh-143959: Skip datetime Fast tests when _datetime absent
VanshAgarwal24036 Jan 20, 2026
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Removed whitespaces
VanshAgarwal24036 Jan 20, 2026
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Correct Lint error
VanshAgarwal24036 Jan 20, 2026
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gh-143959: Skip Fast datetime tests if _datetime is unavailable
VanshAgarwal24036 Jan 20, 2026
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VanshAgarwal24036 Jan 20, 2026
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VanshAgarwal24036 Jan 21, 2026
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VanshAgarwal24036 Jan 21, 2026
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VanshAgarwal24036 Jan 21, 2026
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23 changes: 16 additions & 7 deletions 23 Lib/test/test_datetime.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,25 +4,34 @@

from test.support.import_helper import import_fresh_module


TESTS = 'test.datetimetester'

def load_tests(loader, tests, pattern):
try:
try:
import _datetime
except ImportError:
has_datetime_ext = False
else:
has_datetime_ext = True
del _datetime
pure_tests = import_fresh_module(TESTS,
fresh=['datetime', '_pydatetime', '_strptime'],
blocked=['_datetime'])
fast_tests = import_fresh_module(TESTS,
fresh=['datetime', '_strptime'],
blocked=['_pydatetime'])
fast_tests = None
if has_datetime_ext:
fast_tests = import_fresh_module(TESTS,
fresh=['datetime', '_strptime'],
blocked=['_pydatetime'])
finally:
# XXX: import_fresh_module() is supposed to leave sys.module cache untouched,
# XXX: but it does not, so we have to cleanup ourselves.
for modname in ['datetime', '_datetime', '_strptime']:
for modname in ['datetime', '_datetime', '_pydatetime', '_strptime']:
sys.modules.pop(modname, None)

test_modules = [pure_tests, fast_tests]
test_suffixes = ["_Pure", "_Fast"]
test_modules = [pure_tests]

@serhiy-storchaka serhiy-storchaka Feb 26, 2026

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Now the accelerated module is not tested at all.

test_suffixes = ["_Pure"]

# XXX(gb) First run all the _Pure tests, then all the _Fast tests. You might
# not believe this, but in spite of all the sys.modules trickery running a _Pure
# test last will leave a mix of pure and native datetime stuff lying around.
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