Traceback:

>     image.save("reference.jpg")
>   File "/usr/local/lib/python3.12/dist-packages/PIL/Image.py", line 2596, in save
>     save_handler(self, fp, filename)
>   File "/usr/local/lib/python3.12/dist-packages/PIL/JpegImagePlugin.py", line 670, in _save
>     info = im.encoderinfo
>            ^^^^^^^^^^^^^^
> AttributeError: 'Image' object has no attribute 'encoderinfo'. Did you mean: 'encoderconfig'?

Version Used:

Ubuntu 24.04 LTS
Python 3.12.3
Pillow 11.1.0

I recently bumped Pillow from 9.3.0 to 11.1.0. At some point in the code, image = Image.open(io.BytesIO(bytes)) is used to create a Pillow image. I get the trackback as above when trying to save. Since this code did work for ages, I would expect that some Pillow change is to blame.

I see that JpegImagePlugin.py (line 670), tries to get encoderinfo. I don't know the Pillow code at all, but a wild guess is that this commit radarhere@203ca12 is related to the issue I see now. Perhaps I can just work-around this bug by assigning a dict to encoderinfo myself for now, will update you if that work-around did the trick.