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Merge pull request #7490 from Yay295/patch-1

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Add mode to ImageOps._lut() error message
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Hugo van Kemenade 2023-10-27 07:40:44 +03:00 committed by GitHub
commit d3fd1734af
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2 changed files with 7 additions and 1 deletions
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6
Tests/test_imageops.py
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@ -433,6 +433,12 @@ def test_exif_transpose_in_place():
assert_image_equal(im, expected) assert_image_equal(im, expected)
def test_autocontrast_unsupported_mode():
im = Image.new("RGBA", (1, 1))
with pytest.raises(OSError):
ImageOps.autocontrast(im)
def test_autocontrast_cutoff(): def test_autocontrast_cutoff():
# Test the cutoff argument of autocontrast # Test the cutoff argument of autocontrast
with Image.open("Tests/images/bw_gradient.png") as img: with Image.open("Tests/images/bw_gradient.png") as img:

2
src/PIL/ImageOps.py
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@ -56,7 +56,7 @@ def _lut(image, lut):
lut = lut + lut + lut lut = lut + lut + lut
return image.point(lut) return image.point(lut)
else: else:
msg = "not supported for this image mode" msg = f"not supported for mode {image.mode}"
raise OSError(msg) raise OSError(msg)