Make formats parameter in Image.open accept aNy cAsE

python-pillow · Feb 5, 2021 · 0c1675a · 0c1675a
1 parent 023dbe3
commit 0c1675a
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/Tests/test_image.py b/Tests/test_image.py
@@ -94,7 +94,7 @@ def test_open_formats(self):
         with pytest.raises(TypeError):
             Image.open(PNGFILE, formats=123)
 
-        for formats in [["JPEG"], ("JPEG",)]:
+        for formats in [["jPeG"], ("JpEg",)]:
             with pytest.raises(UnidentifiedImageError):
                 Image.open(PNGFILE, formats=formats)
 

diff --git a/src/PIL/Image.py b/src/PIL/Image.py
@@ -2925,7 +2925,7 @@ def _open_core(fp, filename, prefix, formats):
             if i not in OPEN:
                 init()
             try:
-                factory, accept = OPEN[i]
+                factory, accept = OPEN[i.upper()]
                 result = not accept or accept(prefix)
                 if type(result) in [str, bytes]:
                     accept_warnings.append(result)