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A file utility for accessing both local and remote files through a unified interface
A file utility library that provides a unified, simple interface for accessing both local and remote files. This can be used behind other APIs that need to access files agnostic to where they are located.
cached-path requires Python 3.7 or later.
pip
cached-path is available on PyPI. Just run
pip install cached-path
To install cached-path from source, first clone the repository:
git clone https://github.com/allenai/cached_path.git
cd cached_path
Then run
pip install -e .
from cached_path import cached_path
Given something that might be a URL or local path, cached_path()
determines which.
If it's a remote resource, it downloads the file and caches it to the cache directory, and
then returns the path to the cached file. If it's already a local path,
it makes sure the file exists and returns the path.
For URLs, http://
, https://
, s3://
(AWS S3), gs://
(Google Cloud Storage), and hf://
(HuggingFace Hub) are all supported out-of-the-box.
Optionally beaker://
URLs in the form of beaker://{user_name}/{dataset_name}/{file_path}
are supported, which requires beaker-py to be installed.
For example, to download the PyTorch weights for the model epwalsh/bert-xsmall-dummy
on HuggingFace, you could do:
cached_path("hf://epwalsh/bert-xsmall-dummy/pytorch_model.bin")
For paths or URLs that point to a tarfile or zipfile, you can also add a path
to a specific file to the url_or_filename
preceeded by a "!", and the archive will
be automatically extracted (provided you set extract_archive
to True
),
returning the local path to the specific file. For example:
cached_path("model.tar.gz!weights.th", extract_archive=True)
By default the cache directory is ~/.cache/cached_path/
, however there are several ways to override this setting:
CACHED_PATH_CACHE_ROOT
,set_cache_dir()
, orcache_dir
argument each time you call cached_path()
.cached-path is developed and maintained by the AllenNLP team, backed by the Allen Institute for Artificial Intelligence (AI2). AI2 is a non-profit institute with the mission to contribute to humanity through high-impact AI research and engineering. To learn more about who specifically contributed to this codebase, see our contributors page.
cached-path is licensed under Apache 2.0. A full copy of the license can be found on GitHub.
FAQs
A file utility for accessing both local and remote files through a unified interface
We found that cached-path demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 3 open source maintainers collaborating on the project.
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Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
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