Dataset Features

• Add nifti support by @CloseChoice in https://github.com/huggingface/datasets/pull/7815
• Load medical imaging datasets from Hugging Face:

python ds = load_dataset("username/my_nifti_dataset") ds["train"][0] # {"nifti": <nibabel.nifti1.Nifti1Image>} * Load medical imaging datasets from your disk:

python files = ["/path/to/scan_001.nii.gz", "/path/to/scan_002.nii.gz"] ds = Dataset.from_dict({"nifti": files}).cast_column("nifti", Nifti()) ds["train"][0] # {"nifti": <nibabel.nifti1.Nifti1Image>}

• Documentation: https://huggingface.co/docs/datasets/nifti_dataset

• Add num channels to audio by @CloseChoice in https://github.com/huggingface/datasets/pull/7840

  :::python

  samples have shape (num_channels, num_samples)

  ds = ds.cast_column("audio", Audio()) # default, use all channels ds = ds.cast_column("audio", Audio(num_channels=2)) # use stereo ds = ds.cast_column("audio", Audio(num_channels=1)) # use mono

• Python 3.14 support by @lhoestq in https://github.com/huggingface/datasets/pull/7836

What's Changed

• Fix random seed on shuffle and interleave_datasets by @CloseChoice in https://github.com/huggingface/datasets/pull/7823
• fix ci compressionfs by @lhoestq in https://github.com/huggingface/datasets/pull/7830
• fix: better args passthrough for _batch_setitems() by @sghng in https://github.com/huggingface/datasets/pull/7817
• Fix: Properly render [!TIP] block in stream.shuffle documentation by @art-test-stack in https://github.com/huggingface/datasets/pull/7833
• resolves the ValueError: Unable to avoid copy while creating an array by @ArjunJagdale in https://github.com/huggingface/datasets/pull/7831
• fix column with transform by @lhoestq in https://github.com/huggingface/datasets/pull/7843
• support fsspec 2025.10.0 by @lhoestq in https://github.com/huggingface/datasets/pull/7844

New Contributors

• @sghng made their first contribution in https://github.com/huggingface/datasets/pull/7817
• @art-test-stack made their first contribution in https://github.com/huggingface/datasets/pull/7833

Full Changelog: https://github.com/huggingface/datasets/compare/4.3.0...4.4.0