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Downloading files

Download a single file

hf_hub_download

huggingface_hub.hf_hub_download

< >

( repo_id: str filename: str subfolder: typing.Optional[str] = None repo_type: typing.Optional[str] = None revision: typing.Optional[str] = None library_name: typing.Optional[str] = None library_version: typing.Optional[str] = None cache_dir: typing.Union[str, pathlib.Path, NoneType] = None user_agent: typing.Union[typing.Dict, str, NoneType] = None force_download: typing.Optional[bool] = False force_filename: typing.Optional[str] = None proxies: typing.Optional[typing.Dict] = None etag_timeout: typing.Optional[float] = 10 resume_download: typing.Optional[bool] = False use_auth_token: typing.Union[bool, str, NoneType] = None local_files_only: typing.Optional[bool] = False legacy_cache_layout: typing.Optional[bool] = False )

Parameters

  • repo_id (str) — A user or an organization name and a repo name separated by a /.
  • filename (str) — The name of the file in the repo.
  • subfolder (str, optional) — An optional value corresponding to a folder inside the model repo.
  • repo_type (str, optional) — Set to "dataset" or "space" if uploading to a dataset or space, None or "model" if uploading to a model. Default is None.
  • revision (str, optional) — An optional Git revision id which can be a branch name, a tag, or a commit hash.
  • library_name (str, optional) — The name of the library to which the object corresponds.
  • library_version (str, optional) — The version of the library.
  • cache_dir (str, Path, optional) — Path to the folder where cached files are stored.
  • user_agent (dict, str, optional) — The user-agent info in the form of a dictionary or a string.
  • force_download (bool, optional, defaults to False) — Whether the file should be downloaded even if it already exists in the local cache.
  • proxies (dict, optional) — Dictionary mapping protocol to the URL of the proxy passed to requests.request.
  • etag_timeout (float, optional, defaults to 10) — When fetching ETag, how many seconds to wait for the server to send data before giving up which is passed to requests.request.
  • resume_download (bool, optional, defaults to False) — If True, resume a previously interrupted download.
  • use_auth_token (str, bool, optional) — A token to be used for the download.
    • If True, the token is read from the HuggingFace config folder.
    • If a string, it’s used as the authentication token.
  • local_files_only (bool, optional, defaults to False) — If True, avoid downloading the file and return the path to the local cached file if it exists.
  • legacy_cache_layout (bool, optional, defaults to False) — If True, uses the legacy file cache layout i.e. just call hf_hub_url() then cached_download. This is deprecated as the new cache layout is more powerful.

Download a given file if it’s not already present in the local cache.

The new cache file layout looks like this:

  • The cache directory contains one subfolder per repo_id (namespaced by repo type)
  • inside each repo folder:
    • refs is a list of the latest known revision => commit_hash pairs
    • blobs contains the actual file blobs (identified by their git-sha or sha256, depending on whether they’re LFS files or not)
    • snapshots contains one subfolder per commit, each “commit” contains the subset of the files that have been resolved at that particular commit. Each filename is a symlink to the blob at that particular commit.
[  96]  .
└── [ 160]  models--julien-c--EsperBERTo-small
    ├── [ 160]  blobs
    │   ├── [321M]  403450e234d65943a7dcf7e05a771ce3c92faa84dd07db4ac20f592037a1e4bd
    │   ├── [ 398]  7cb18dc9bafbfcf74629a4b760af1b160957a83e
    │   └── [1.4K]  d7edf6bd2a681fb0175f7735299831ee1b22b812
    ├── [  96]  refs
    │   └── [  40]  main
    └── [ 128]  snapshots
        ├── [ 128]  2439f60ef33a0d46d85da5001d52aeda5b00ce9f
        │   ├── [  52]  README.md -> ../../blobs/d7edf6bd2a681fb0175f7735299831ee1b22b812
        │   └── [  76]  pytorch_model.bin -> ../../blobs/403450e234d65943a7dcf7e05a771ce3c92faa84dd07db4ac20f592037a1e4bd
        └── [ 128]  bbc77c8132af1cc5cf678da3f1ddf2de43606d48
            ├── [  52]  README.md -> ../../blobs/7cb18dc9bafbfcf74629a4b760af1b160957a83e
            └── [  76]  pytorch_model.bin -> ../../blobs/403450e234d65943a7dcf7e05a771ce3c92faa84dd07db4ac20f592037a1e4bd

Raises the following errors:

hf_hub_url

huggingface_hub.hf_hub_url

< >

( repo_id: str filename: str subfolder: typing.Optional[str] = None repo_type: typing.Optional[str] = None revision: typing.Optional[str] = None )

Parameters

  • repo_id (str) — A namespace (user or an organization) name and a repo name separated by a /.
  • filename (str) — The name of the file in the repo.
  • subfolder (str, optional) — An optional value corresponding to a folder inside the repo.
  • repo_type (str, optional) — Set to "dataset" or "space" if uploading to a dataset or space, None or "model" if uploading to a model. Default is None.
  • revision (str, optional) — An optional Git revision id which can be a branch name, a tag, or a commit hash.

Construct the URL of a file from the given information.

The resolved address can either be a huggingface.co-hosted url, or a link to Cloudfront (a Content Delivery Network, or CDN) for large files which are more than a few MBs.

Example:

>>> from huggingface_hub import hf_hub_url

>>> hf_hub_url(
...     repo_id="julien-c/EsperBERTo-small", filename="pytorch_model.bin"
... )
'https://huggingface.co/julien-c/EsperBERTo-small/resolve/main/pytorch_model.bin'

Notes:

Cloudfront is replicated over the globe so downloads are way faster for the end user (and it also lowers our bandwidth costs).

Cloudfront aggressively caches files by default (default TTL is 24 hours), however this is not an issue here because we implement a git-based versioning system on huggingface.co, which means that we store the files on S3/Cloudfront in a content-addressable way (i.e., the file name is its hash). Using content-addressable filenames means cache can’t ever be stale.

In terms of client-side caching from this library, we base our caching on the objects’ entity tag (ETag), which is an identifier of a specific version of a resource [1]_. An object’s ETag is: its git-sha1 if stored in git, or its sha256 if stored in git-lfs.

References:

Download a snapshot of the repo

huggingface_hub.snapshot_download

< >

( repo_id: str revision: typing.Optional[str] = None repo_type: typing.Optional[str] = None cache_dir: typing.Union[str, pathlib.Path, NoneType] = None library_name: typing.Optional[str] = None library_version: typing.Optional[str] = None user_agent: typing.Union[typing.Dict, str, NoneType] = None proxies: typing.Optional[typing.Dict] = None etag_timeout: typing.Optional[float] = 10 resume_download: typing.Optional[bool] = False use_auth_token: typing.Union[bool, str, NoneType] = None local_files_only: typing.Optional[bool] = False allow_regex: typing.Union[typing.List[str], str, NoneType] = None ignore_regex: typing.Union[typing.List[str], str, NoneType] = None allow_patterns: typing.Union[typing.List[str], str, NoneType] = None ignore_patterns: typing.Union[typing.List[str], str, NoneType] = None )

Parameters

  • repo_id (str) — A user or an organization name and a repo name separated by a /.
  • revision (str, optional) — An optional Git revision id which can be a branch name, a tag, or a commit hash.
  • repo_type (str, optional) — Set to "dataset" or "space" if uploading to a dataset or space, None or "model" if uploading to a model. Default is None.
  • cache_dir (str, Path, optional) — Path to the folder where cached files are stored.
  • library_name (str, optional) — The name of the library to which the object corresponds.
  • library_version (str, optional) — The version of the library.
  • user_agent (str, dict, optional) — The user-agent info in the form of a dictionary or a string.
  • proxies (dict, optional) — Dictionary mapping protocol to the URL of the proxy passed to requests.request.
  • etag_timeout (float, optional, defaults to 10) — When fetching ETag, how many seconds to wait for the server to send data before giving up which is passed to requests.request.
  • resume_download (bool, optional, defaults to False) -- If True`, resume a previously interrupted download.
  • use_auth_token (str, bool, optional) — A token to be used for the download.
    • If True, the token is read from the HuggingFace config folder.
    • If a string, it’s used as the authentication token.
  • local_files_only (bool, optional, defaults to False) — If True, avoid downloading the file and return the path to the local cached file if it exists.
  • allow_patterns (List[str] or str, optional) — If provided, only files matching at least one pattern are downloaded.
  • ignore_patterns (List[str] or str, optional) — If provided, files matching any of the patterns are not downloaded.

Download all files of a repo.

Downloads a whole snapshot of a repo’s files at the specified revision. This is useful when you want all files from a repo, because you don’t know which ones you will need a priori. All files are nested inside a folder in order to keep their actual filename relative to that folder.

An alternative would be to just clone a repo but this would require that the user always has git and git-lfs installed, and properly configured.

Raises the following errors:

Get metadata about a file

get_hf_file_metadata

huggingface_hub.get_hf_file_metadata

< >

( url: str use_auth_token: typing.Union[bool, str, NoneType] = None proxies: typing.Optional[typing.Dict] = None timeout: typing.Optional[float] = 10 )

Parameters

  • url (str) — File url, for example returned by hf_hub_url().
  • use_auth_token (str or bool, optional) — A token to be used for the download.
    • If True, the token is read from the HuggingFace config folder.
    • If False or None, no token is provided.
    • If a string, it’s used as the authentication token.
  • proxies (dict, optional) — Dictionary mapping protocol to the URL of the proxy passed to requests.request.
  • etag_timeout (float, optional, defaults to 10) — How many seconds to wait for the server to send metadata before giving up.

Fetch metadata of a file versioned on the Hub for a given url.

HfFileMetadata

class huggingface_hub.HfFileMetadata

< >

( commit_hash: typing.Optional[str] etag: typing.Optional[str] location: str )

Parameters

  • commit_hash (str, optional) — The commit_hash related to the file.
  • etag (str, optional) — Etag of the file on the server.
  • location (str) — Location where to download the file. Can be a Hub url or not (CDN).

Data structure containing information about a file versioned on the Hub.

Returned by get_hf_file_metadata() based on a URL.

Caching

The methods displayed above are designed to work with a caching system that prevents re-downloading files. The caching system was updated in v0.8.0 to become the central cache-system shared across libraries that depend on the Hub.

Read the cache-system guide for a detailed presentation of caching at at HF.