Latest version reported an error, but there were no errors in version 10.4.5

[hjj-lmx]

def pil_to_bytes(pil_img, ext: str,quality: int = 95, exif=None) -> bytes:
    exif = exif or b''
    with io.BytesIO() as output:
        pil_img.save(output, format=ext, exif=exif, quality=quality)
        image_bytes = output.getvalue()
    return image_bytes

Traceback (most recent call last):
  File "/UD-AI-RemoveObject/ud_cleaner/server_gpu.py", line 235, in process
    image_bytes = pil_to_bytes(
  File "/UD-AI-RemoveObject/ud_cleaner/helper.py", line 144, in pil_to_bytes
    pil_img.save(output, format=ext, exif=exif, quality=quality)
  File "/usr/local/lib/python3.10/dist-packages/PIL/Image.py", line 2605, in save
    save_handler(self, fp, filename)
  File "/usr/local/lib/python3.10/dist-packages/PIL/JpegImagePlugin.py", line 796, in _save
    exif = exif.tobytes()
  File "/usr/local/lib/python3.10/dist-packages/PIL/Image.py", line 4044, in tobytes
    return b"Exif\x00\x00" + head + ifd.tobytes(offset)
  File "/usr/local/lib/python3.10/dist-packages/PIL/TiffImagePlugin.py", line 963, in tobytes
    data = ifd.tobytes(offset)
  File "/usr/local/lib/python3.10/dist-packages/PIL/TiffImagePlugin.py", line 966, in tobytes
    data = self._write_dispatch[typ](self, *values)
  File "/usr/local/lib/python3.10/dist-packages/PIL/TiffImagePlugin.py", line 827, in write_rational
    return b"".join(
  File "/usr/local/lib/python3.10/dist-packages/PIL/TiffImagePlugin.py", line 828, in <genexpr>
    self._pack("2L", *_limit_rational(frac, 2**32 - 1)) for frac in values
  File "/usr/local/lib/python3.10/dist-packages/PIL/TiffImagePlugin.py", line 297, in _limit_rational
    inv = abs(float(val)) > 1
  File "/usr/lib/python3.10/numbers.py", line 291, in __float__
    return int(self.numerator) / int(self.denominator)
ZeroDivisionError: division by zero

[radarhere]

For clarity, there is no Pillow 10.4.5. I'm guessing you just meant Pillow 10.4.0.

While it would be more helpful to have a copy of the image you are trying to open, this otherwise looks like a duplicate of #8471, which has been resolved by #8474.

The next Pillow release is scheduled for January 2.

If you would like to patch your copy of Pillow so that it works in the meantime, you can insert this before your code.

from PIL import TiffImagePlugin

# Patch
def _limit_rational(val, max_val):
    inv = abs(val) > 1
    n_d = TiffImagePlugin.IFDRational(1 / val if inv else val).limit_rational(max_val)
    return n_d[::-1] if inv else n_d
TiffImagePlugin._limit_rational = _limit_rational

[radarhere]

Pillow 11.1.0 has now been released with the fix for this.