python-pillow/Pillow
1
1
Fork 0
mirror of https://github.com/python-pillow/Pillow.git synced 2025-01-26 01:04:29 +03:00
Code Issues Packages Projects Releases Wiki Activity

Updated resampling filter error messages

Browse Source
This commit is contained in:
Andrew Murray 2019-05-21 06:08:57 +10:00
parent 169961649d
commit 77630f000c
2 changed files with 37 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
Tests/test_image_transform.py
View File

@ -160,6 +160,15 @@ class TestImageTransform(PillowTestCase):
im = hopper()
self.assertRaises(ValueError, im.transform, (100, 100), None)
def test_unknown_resampling_filter(self):
im = hopper()
(w, h) = im.size
for resample in (Image.BOX, "unknown"):
self.assertRaises(ValueError, im.transform, (100, 100), Image.EXTENT,
(0, 0,
w, h),
resample)
class TestImageTransformAffine(PillowTestCase):
transform = Image.AFFINE

30
src/PIL/Image.py
View File

@ -1794,7 +1794,18 @@ class Image(object):
if resample not in (
NEAREST, BILINEAR, BICUBIC, LANCZOS, BOX, HAMMING,
):
raise ValueError("unknown resampling filter")
message = "Unknown resampling filter ("+str(resample)+")."
filters = [filter[1]+" (%d)" % filter[0] for filter in (
(NEAREST, "Image.NEAREST"),
(LANCZOS, "Image.LANCZOS"),
(BILINEAR, "Image.BILINEAR"),
(BICUBIC, "Image.BICUBIC"),
(BOX, "Image.BOX"),
(HAMMING, "Image.HAMMING")
)]
raise ValueError(
message+" Use "+", ".join(filters[:-1])+" or "+filters[-1])
size = tuple(size)
@ -2263,7 +2274,22 @@ class Image(object):
raise ValueError("unknown transformation method")
if resample not in (NEAREST, BILINEAR, BICUBIC):
raise ValueError("unknown resampling filter")
if resample in (BOX, HAMMING, LANCZOS):
message = {
BOX: "Image.BOX",
HAMMING: "Image.HAMMING",
LANCZOS: "Image.LANCZOS/Image.ANTIALIAS"
}[resample]+" (%d) cannot be used." % resample
else:
message = "Unknown resampling filter ("+str(resample)+")."
filters = [filter[1]+" (%d)" % filter[0] for filter in (
(NEAREST, "Image.NEAREST"),
(BILINEAR, "Image.BILINEAR"),
(BICUBIC, "Image.BICUBIC")
)]
raise ValueError(
message+" Use "+", ".join(filters[:-1])+" or "+filters[-1])
image.load()