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gh-130167: Improve the error case for textwrap.dedent #132666

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Merged
AA-Turner merged 5 commits into from
Apr 19, 2025
Merged

gh-130167: Improve the error case for textwrap.dedent #132666

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4c820cd
Improve the error case for ``textwrap.dedent``
AA-Turner Apr 18, 2025
d236d0c
Add a test
AA-Turner Apr 18, 2025
ec839ff
Improve the error message for bytes
AA-Turner Apr 18, 2025
1902d1c
Suppress BytesWarning
AA-Turner Apr 18, 2025
a996f00
Remove fast path
AA-Turner Apr 18, 2025
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Improve the error message for bytes
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@AA-Turner
AA-Turner committed Apr 18, 2025
commit ec839ff387878e231c0356d6a189833349d4ee8d
3 changes: 3 additions & 0 deletions Lib/test/test_textwrap.py
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Original file line number Diff line number Diff line change
Expand Up @@ -769,6 +769,9 @@ def test_type_error(self):
with self.assertRaisesRegex(TypeError, "expected str object, not"):
dedent(0)

with self.assertRaisesRegex(TypeError, "expected str object, not"):
dedent(b'')

def assertUnchanged(self, text):
"""assert that dedent() has no effect on 'text'"""
self.assertEqual(text, dedent(text))
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2 changes: 1 addition & 1 deletion Lib/textwrap.py
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Original file line number Diff line number Diff line change
Expand Up @@ -431,7 +431,7 @@ def dedent(text):

try:
lines = text.split('\n')
except AttributeError:
except (AttributeError, TypeError):
msg = f'expected str object, not {type(text).__qualname__!r}'
raise TypeError(msg) from None

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