alibi-detect: utils: fetch: "Paths are no longer accepted as the `fname` argument."

[therayquaza]

Code extracted from https://docs.seldon.io/projects/alibi-detect/en/stable/examples/cd_mmd_cifar10.html

from alibi_detect.utils.fetching import fetch_tf_model

dataset = 'cifar10'
model = 'resnet32'
clf = fetch_tf_model(dataset, model)

Result:

[/usr/local/lib/python3.12/dist-packages/keras/src/utils/file_utils.py](https://localhost:8080/#) in get_file(fname, origin, untar, md5_hash, file_hash, cache_subdir, hash_algorithm, extract, archive_format, cache_dir, force_download)
    239     else:
    240         if os.sep in fname:
--> 241             raise ValueError(
    242                 "Paths are no longer accepted as the `fname` argument. "
    243                 "To specify the file's parent directory, use "

ValueError: Paths are no longer accepted as the `fname` argument. To specify the file's parent directory, use the `cache_dir` argument. Received: fname=/content/resnet32.h5

version: 0.12.0
python version: 3.12.11

[toutane]

Same problem with python 3.11.13, tensorflow 2.20.0, tf_keras 2.20.1 and keras 3.11.3 on osx-arm64.
(Edit: Working with keras 2.14.0)

[rashidrao-pk]

Hi, I’d like to work on this issue.

I plan to reproduce the failure with the currently supported TensorFlow/Keras setup, update fetch_tf_model so that the filename and cache directory are passed separately to get_file, and add a regression test covering the path-handling behaviour.

Please let me know if this approach aligns with the maintainers’ expectations.