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[3.12] gh-111380: Show SyntaxWarnings only once when parsing if invalid syntax is encouintered (GH-111381) (#111382)

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gh-111380: Show SyntaxWarnings only once when parsing if invalid syntax is encouintered (GH-111381)
(cherry picked from commit 3d2f1f0b83)

Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
This commit is contained in:
Miss Islington (bot) 2023-10-27 06:02:17 +02:00 • committed by GitHub
parent a70b2cd2d2
commit 307ca78d7f
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3 changed files with 19 additions and 0 deletions
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12
Lib/test/test_string_literals.py
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@ -131,6 +131,18 @@ class TestLiterals(unittest.TestCase):
self.assertEqual(exc.lineno, 1)
self.assertEqual(exc.offset, 1)
# Check that the warning is raised ony once if there are syntax errors
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always', category=SyntaxWarning)
with self.assertRaises(SyntaxError) as cm:
eval("'\\e' $")
exc = cm.exception
self.assertEqual(len(w), 1)
self.assertEqual(w[0].category, SyntaxWarning)
self.assertRegex(str(w[0].message), 'invalid escape sequence')
self.assertEqual(w[0].filename, '<string>')
def test_eval_str_invalid_octal_escape(self):
for i in range(0o400, 0o1000):
with self.assertWarns(SyntaxWarning):