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IndexError when preprocessing an empty image or video list

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
74/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Active
Tech stack
python

Research direction

Start at is_valid_image_imagelist and trace the image/video preprocessing path that indexes image[0] or video[0]. Check the related pull request for context, then add coverage for empty lists and verify preprocessing raises a clear error rather than IndexError.

Written by the indexing model from the issue text.

Description

Describe the bug

Calling image/video preprocessing with an empty list raises IndexError because is_valid_image_imagelist([]) returns True (all([]) is True) and the code then indexes image[0] / video[0].

Reproduction

Empty list currently passes the validity check, then crashes on image[0].

Expected behavior

An empty list should not be treated as a valid image list, and preprocess should raise a clear error instead of IndexError.

Related

https://github.com/huggingface/diffusers/pull/14840

Dominant language
Python
Stars
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Forks
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Avg merge
3d 14h
Merged PRs (30d)
67

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  4. Open a pull request that references the issue number.

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