Added deprecation warning

python-pillow · Mar 24, 2020 · ce40529 · ce40529
1 parent 9f89f26
commit ce40529
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Showing 2 changed files with 8 additions and 1 deletion.
diff --git a/Tests/test_file_jpeg2k.py b/Tests/test_file_jpeg2k.py
@@ -129,7 +129,8 @@ def test_reduce():
     with Image.open("Tests/images/test-card-lossless.jp2") as im:
         assert callable(im.reduce)
 
-        im.reduce = 2
+        with pytest.warns(DeprecationWarning):
+            im.reduce = 2
         assert im.reduce == 2
 
         im.load()

diff --git a/src/PIL/Jpeg2KImagePlugin.py b/src/PIL/Jpeg2KImagePlugin.py
@@ -15,6 +15,7 @@
 import io
 import os
 import struct
+import warnings
 
 from . import Image, ImageFile
 
@@ -213,6 +214,11 @@ def reduce(self):
 
     @reduce.setter
     def reduce(self, value):
+        warnings.warn(
+            'The reduce property of Jpeg2KImageFile is deprecated, and will'
+            ' be removed in a future version. Use the load_reduce method instead.',
+            DeprecationWarning
+        )
         self.load_reduce = value
 
     def load(self):