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[3.14] gh-139640: Fix swallowing syntax warnings in different modules (GH-139755) (GH-140117)

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Revert GH-131993.

Fix swallowing some syntax warnings in different modules if they accidentally
have the same message and are emitted from the same line.

Fix duplicated warnings in the "finally" block.

(cherry picked from commit 279db6bede)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

* Update 2025-10-06-10-03-37.gh-issue-139640.gY5oTb.rst

---------

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
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Miss Islington (bot) 2025-10-14 17:56:01 +02:00 • committed by GitHub
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commit af28efd8b4
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7 changed files with 63 additions and 74 deletions
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26
Lib/test/test_pyrepl/test_interact.py
View file

@ -1,7 +1,6 @@
import contextlib
import io
import unittest
import warnings
from unittest.mock import patch
from textwrap import dedent
@ -274,28 +273,3 @@ def test_incomplete_statement(self):
code = "if foo:"
console = InteractiveColoredConsole(namespace, filename="<stdin>")
self.assertTrue(_more_lines(console, code))
class TestWarnings(unittest.TestCase):
def test_pep_765_warning(self):
"""
Test that a SyntaxWarning emitted from the
AST optimizer is only shown once in the REPL.
"""
# gh-131927
console = InteractiveColoredConsole()
code = dedent("""\
def f():
try:
return 1
finally:
return 2
""")
with warnings.catch_warnings(record=True) as caught:
warnings.simplefilter("default")
console.runsource(code)
count = sum("'return' in a 'finally' block" in str(w.message)
for w in caught)
self.assertEqual(count, 1)