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[3.9] bpo-44566: resolve differences between asynccontextmanager and contextmanager (GH-27024). (#27269)

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(cherry picked from commit 7f1c330da3)

Co-authored-by: Thomas Grainger <tagrain@gmail.com>
This commit is contained in:
Łukasz Langa 2021-07-20 21:12:58 +02:00 • committed by GitHub
parent dae4928dd0
commit 1c5c9c89ff
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4 changed files with 78 additions and 44 deletions
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23
Lib/test/test_contextlib.py
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@ -125,19 +125,22 @@ class ContextManagerTestCase(unittest.TestCase):
self.assertEqual(state, [1, 42, 999])
def test_contextmanager_except_stopiter(self):
stop_exc = StopIteration('spam')
@contextmanager
def woohoo():
yield
try:
with self.assertWarnsRegex(DeprecationWarning,
"StopIteration"):
with woohoo():
raise stop_exc
except Exception as ex:
self.assertIs(ex, stop_exc)
else:
self.fail('StopIteration was suppressed')
class StopIterationSubclass(StopIteration):
pass
for stop_exc in (StopIteration('spam'), StopIterationSubclass('spam')):
with self.subTest(type=type(stop_exc)):
try:
with woohoo():
raise stop_exc
except Exception as ex:
self.assertIs(ex, stop_exc)
else:
self.fail(f'{stop_exc} was suppressed')
def test_contextmanager_except_pep479(self):
code = """\