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gh-69528: Distinguish between file modes "wb+" and "rb+" (GH-137834)

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Co-authored-by: Xiang Zhang <angwerzx@126.com>
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Stan Ulbrych 2025-10-21 18:33:30 +01:00 • committed by GitHub
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commit 02c1abfc54
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7 changed files with 27 additions and 10 deletions
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Lib/test/test_io/test_fileio.py
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@ -567,8 +567,8 @@ def testModeStrings(self):
# test that the mode attribute is correct for various mode strings
# given as init args
try:
for modes in [('w', 'wb'), ('wb', 'wb'), ('wb+', 'rb+'),
('w+b', 'rb+'), ('a', 'ab'), ('ab', 'ab'),
for modes in [('w', 'wb'), ('wb', 'wb'), ('wb+', 'wb+'),
('w+b', 'wb+'), ('a', 'ab'), ('ab', 'ab'),
('ab+', 'ab+'), ('a+b', 'ab+'), ('r', 'rb'),
('rb', 'rb'), ('rb+', 'rb+'), ('r+b', 'rb+')]:
# read modes are last so that TESTFN will exist first