DeprecationWarning from Pillow (with Pillow ≥ 9.1.0) #19569
Description
System Info
transformers: 4.22.2
pillow: 9.2.0
Python 3.9.9
Who can help?
@NielsRogge @amyeroberts (tagged based on changes to image_utils.py in #18520, but the issue seems to span most of the repo)
Reproduction
Pillow 9.1.0 deprecated a bunch of constants such as PIL.Image.BILINEAR, leading to the following warning when importing the CLIP model
Note: I ran python with warnings enabled (python -W always)
>>> from transformers import CLIPFeatureExtractor
.../transformers/image_utils.py:239: DeprecationWarning: BILINEAR is deprecated and will be removed in Pillow 10 (2023-07-01). Use Resampling.BILINEAR instead.
def resize(self, image, size, resample=PIL.Image.BILINEAR, default_to_square=True, max_size=None):
Caused by this line in image_utils.py (though there's other instances where deprecated PIL constants are used)
These constants are pending removal in Pillow 10 (July 2023).
Action required
Noticed that transformers doesn't currently enforce a Pillow version constraint in setup.py, so I've opened this issue to check if any action is required – either enforce Pillow < 10, or migrate to using the new Pillow constants
Additional info: discovered this warning when importing https://github.com/huggingface/diffusers – simply running import diffusers on a fresh install (version 0.4.1) triggers this warning for me.