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#5354: replace list with Sequence in from_parquet type hints
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\This PR replaces `list` type hints with `Sequence` in `from_parquet` to improve type checking. Note: Local pytest errors on Python 3.13 due to removal of `distutils` are unrelated to this change.
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Fix #5354: replace list with Sequence in from_parquet type hints
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This PR replaces `list` type hints with `Sequence` in `from_parquet` to improve type checking. Note: Local pytest errors on Python 3.13 due to removal of `distutils` are unrelated to this change.
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feat: Add GenBank file format support for biological sequence data
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## Summary Add native support for loading GenBank (.gb, .gbk, .genbank) files, a standard format for biological sequence data with annotations maintained by NCBI. ## Changes - Add `genbank` packaged module with pure Python state machine parser - Register GenBank extensions in `_PACKAGED_DATASETS_MODULES` and `_EXTENSI...
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Add examples for Lance datasets
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2026-01-17T19:33:31
2026-01-17T21:58:53
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## Summary Updated the Lance integration docs to match the official dataset cards and expand coverage of multimodal workflows in `use_with_lance.mdx`. ## Details - Added a Lance format-focused guidance page for multimodal examples: - Stream from the Hub via `datasets` API - Use Lance's dataset API to p...
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docs: clarify documentation build instructions
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[ "This PR clarifies the documentation build instructions by improving wording and adding clarity for local builds." ]
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docs: clarify documentation build instructions
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json: add optional return_file_name parameter
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This PR adds an optional `return_file_name` parameter to the JSON dataset loader. When enabled, a new `file_name` column is added containing the source file name for each row. Default behavior is unchanged. Changes: - Add `return_file_name` to JsonConfig - Append file name during JSON table generation - Add t...
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MMLU get_dataset_config_names provides different lists of subsets in online and offline modes
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### Describe the bug When getting the config names of `cais/mmlu` in online mode, it provides the different subjects and `all` but in offline mode is provides `default` even with cached version of the dataset. ### Steps to reproduce the bug 1. First download dataset in online mode so that it is cached: ``` $ HF_DATA...
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Question: Is there a faster way to push_to_hub for large image datasets?
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[ "This is a really interesting approach, especially combining parallel parquet\nconversion with upload_large_folder and hf_xet.\n\nOne question / observation:\nThe shard calculation currently uses max_shard_size_mb as a proxy for\nsamples_per_shard. Since sample size can vary a lot across datasets,\nwould it make se...
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# Question: Is there a faster way to `push_to_hub` for large image datasets? Or could this approach be integrated? Hi! I frequently work with large image datasets (100k-300k+ samples) and found that `dataset.push_to_hub()` can be quite slow. cc @lhoestq - would love your thoughts on this! I experimented with an alte...
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7945). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
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Useful to list a dataset's shards: ```python from datasets import load_dataset_builder, StreamingDownloadManager dlm = StreamingDownloadManager() def get_shards(dataset_name, *args, **kwargs): b = load_dataset_builder(dataset_name, *args, **kwargs) splits = b._split_generators(dlm) return list(...
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add _OverridableIOWrapper
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7942). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2026-01-13T13:37:09
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fix https://github.com/huggingface/datasets/issues/7936
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Remove Python 3.7 and Python 2 code paths from _dill.py
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2026-01-13T08:44:31
2026-01-13T08:44:31
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This PR simplifies the code pickle handling to only support Python 3.9+. Datasets requires Python 3.9+ (since PR #7474). There's some dill specific code branches checking for earlier versions of python which can be removed.
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Improve readability and documentation of indexing integration tests
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2026-01-13T06:42:07
2026-01-13T06:42:07
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### Summary This PR improves the readability and maintainability of the indexing integration tests by adding clear, detailed comments throughout the test suite. ### Motivation The indexing tests cover multiple backends (FAISS and Elasticsearch) and involve non-trivial workflows such as vector creation, indexing, q...
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datasets.load_from_disk progress bar optional manual control
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2026-01-13T03:19:13
2026-01-13T03:19:13
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### Feature request This is tangentially related to [https://github.com/huggingface/datasets/issues/7918](https://github.com/huggingface/datasets/issues/7918). When loading a dataset with > 16 files a progress bar is shown (unless stdout is redirected or [https://github.com/huggingface/datasets/pull/7919](https://git...
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Fix method to retrieve attributes from file object
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7938). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2026-01-12T14:08:31
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fix http://github.com/huggingface/datasets/issues/7936
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Fix duplicate log messages by disabling log propagation by default
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2026-01-12T08:03:18
2026-01-13T08:10:24
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This PR fixes an issue where applications that configure logging see duplicate messages from `datasets`: ```python import logging logging.basicConfig(level=logging.WARNING) from datasets.utils.logging import get_logger get_logger("datasets.load").warning("This appears twice") ``` Outputs: ``` This appears ...
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_add_retries_to_file_obj_read_method makes file_obj invalid for pyarrow
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[ "hmm not sure how to fix this, I believe `file_obj.__getattr__ = lambda _, attr: getattr(orig_file_obj, attr)` would make all the methods point to the original file_obj", "> hmm not sure how to fix this, I believe `file_obj.__getattr__ = lambda _, attr: getattr(orig_file_obj, attr)` would make all the methods poi...
2026-01-09T07:05:25
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### Describe the bug I'm trying to use `load_dataset` to construct a dataset that read parquet data on HDFS streamingly, like ```python ds = load_dataset( "parquet", data_files={ "train": "hdfs://xxx/train*.parquet", "test": "hdfs://xxx/test*.parquet" }, streaming=True, ) ``` I encounte...
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Bug fix: Add HDFS hostname to protocol prefix
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[ "Hi ! is it related to https://github.com/huggingface/datasets/issues/7934 ?\r\n\r\nIt's not clear to me why the protocol would need this, given hostname should be present in `pattern` already\r\n\r\n```python\r\nresolve_pattern(\"hdfs://hostname/user/xxx\", ...)\r\n```", "> Hi ! is it related to #7934 ?\r\n> \r\...
2026-01-09T03:59:45
2026-01-15T04:06:17
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For HDFS url with hostname like `hdfs://hostname/user/xxx`, the function `resolve_pattern` would drop the hostname, and outputs `hdfs:///user/xxx`. This may break later file operations by trying to connect to wrong HDFS cluster.
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xPath cannot handle hdfs:///xxxx properly
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2026-01-08T12:14:11
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### Describe the bug _as_str('hdfs:///xxxx') would return hdfs://xxxx. Removing one / and making the path invalid. For the use case like ``` ds = load_dataset( "parquet", data_files={ "train": "hdfs:///user/path/to/data/train*.parquet", }, streaming=True, storage_options={ "host": ...
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feat: Add Apache TsFile format support
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7933). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2026-01-05T08:28:12
2026-01-06T10:26:51
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# Add Apache TsFile format support Adds support for loading `.tsfile` datasets. Closes #7922. ## What's TsFile? [Apache TsFile](https://tsfile.apache.org/) is a columnar time-series format popular in IoT. The TsFile community requested this integration and offered to help maintain it. ## What I did Creat...
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Fix duplicate keyword conflict in load_dataset_builder
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[ "Hi HuggingFace team\r\nThis PR fixes issue #4910 by safely merging builder_kwargs and config_kwargs to avoid duplicate keyword errors. \r\nA regression test is included to ensure this does not happen again. \r\n\r\nPlease let me know if you’d like any changes. Thanks!\r\n" ]
2026-01-03T05:49:06
2026-01-03T05:52:02
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Fixes #4910 This PR fixes a bug where passing the same keyword in builder_kwargs and config_kwargs caused a TypeError in load_dataset_builder. The kwargs are now merged safely so config_kwargs override builder_kwargs without duplication. A regression test is added to prevent this from happening again.
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7,931
Enable CORS + HTTP Range support for browser partial reads on cas-bridge.xethub.hf.co (Parquet row-group access)
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[ "Cc @assafvayner maybe ? or @cfahlgren1 @severo if you've already encountered this ?", "OK, reproduced with hyparquet on https://huggingface.co/spaces/hyperparam/hyperparam, see https://huggingface.co/spaces/hyperparam/hyperparam?url=https%3A%2F%2Fhuggingface.co%2Fdatasets%2Ffacebook%2Fresearch-plan-gen%2Fblob%2F...
2026-01-03T04:23:54
2026-01-12T21:51:41
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### Feature request ## Summary Browser-based data tools need Range requests to read Parquet efficiently (footer + selected row groups). Downloads from the Hub redirect to cas-bridge.xethub.hf.co (Xet bridge). The redirected host fails CORS preflight for Range/HEAD workflows, blocking partial reads. ([Hugging Face](htt...
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Proposal: Protein 3D Structure Visualization for Dataset Viewer
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[ "cc @georgia-hf - Following up on your question about protein visualization for the Dataset Viewer. This proposal recommends 3Dmol.js (~150KB gzipped) as a lightweight alternative to Mol* (~1.3MB gzipped).\n\nLooking forward to your feedback!", "Exciting ! cc @cfahlgren1 @severo for the Viewer part\r\n\r\nFor the...
2026-01-03T03:30:01
2026-01-09T18:33:10
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# Proposal: Protein 3D Structure Visualization for HuggingFace Dataset Viewer ## Executive Summary This proposal outlines adding 3D protein structure visualization to the HuggingFace Dataset Viewer, enabling users to interactively view PDB and mmCIF molecular structures directly within the dataset preview interface. ...
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Raise early for invalid `revision` in `load_dataset`
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[ "Passes\r\n```sh\r\npytest -k \"LoadTest and test_load_dataset_invalid_revision_with_cache\"\r\n```\r\n\r\nFails\r\n```sh\r\ngit checkout cc2399019a3a547ebc31ec68a1ff99abd4ec93ce\r\npytest -k \"LoadTest and test_load_dataset_invalid_revision_with_cache\"\r\n```\r\n\r\nRan `make test`, but failures look unrelated to...
2026-01-02T10:40:49
2026-01-09T11:08:44
2026-01-09T11:08:43
CONTRIBUTOR
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Solves https://github.com/huggingface/datasets/issues/7928 Raise early for invalid revisions
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`load_dataset` `revision` param not respected when fetching from cache
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[ "This might be better placed as a feature request not a bug, since the logging `Using the latest cached version of the dataset since sentientfutures/ahb couldn't be found on the Hugging Face Hub` is clear.", "https://github.com/huggingface/datasets/pull/7929 This only solves the case of invalid revisions. Fetchin...
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### Describe the bug `datasets.load_dataset` `revision` semantics are a bit inconsistent when the dataset is not found on the huggingface hub. When fetching the latest cached version of the dataset, the `revision` argument is ignored, so long as any cached versions of the dataset already exist in the HF cache. ### St...
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Using Stateful Dataloader with Split Dataset By Node and DCP for DDP
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[ "Does it need to be pickled?\n\n```python\n def load_state_dict(self, state_dict):\n hf_state = pickle.loads(state_dict[\"data\"])\n self.train_dataset.load_state_dict(hf_state)\n\n def state_dict(self):\n return {\"data\": pickle.dumps(self.train_dataset.state_dict())}\n```", "Pickling...
2026-01-01T22:27:07
2026-01-02T02:48:21
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### Describe the bug I am trying to determine how to save and load the Stateful Dataloader State with DCP and Split Dataset by Node for DDP. Currently, I am running into the issue where I am receiving a slow resume. ``` Neither dataset nor iter(dataset) defines state_dict/load_state_dict so we are naively fast-forwar...
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Add lightweight PDB (Protein Data Bank) file support
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2025-12-31T21:01:04
2026-01-09T19:22:17
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## Summary This PR adds support for loading PDB (Protein Data Bank) files with `load_dataset()`, following the **ImageFolder pattern** where **one row = one structure**. Based on feedback from @lhoestq in #7930, this approach makes datasets more practical for ML workflows: - Each row is independent, enabling train/te...
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feat: Add mmCIF file support for macromolecular structures
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2025-12-31T20:11:32
2026-01-09T19:22:55
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## Summary This PR adds support for loading mmCIF (macromolecular Crystallographic Information File) files with `load_dataset()`, following the **ImageFolder pattern** where **one row = one structure**. Based on feedback from @lhoestq in #7930, this approach makes datasets more practical for ML workflows: - Each row ...
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Add lightweight FASTQ file format support
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2025-12-31T19:46:42
2026-01-10T01:24:56
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## Summary This PR adds support for loading FASTQ files directly with `load_dataset()`. FASTQ is an extension of FASTA that includes quality scores for each base, widely used for storing output from high-throughput sequencing instruments. ### Key Features - **Zero external dependencies** - Pure Python parser based o...
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feat(fasta): add lightweight FASTA file format support
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2025-12-31T19:33:00
2026-01-10T01:13:05
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## Summary This PR adds support for loading FASTA files directly with `load_dataset()`, addressing feedback from #7851. FASTA is a text-based format for representing nucleotide sequences (DNA/RNA) or peptide sequences (proteins), widely used in bioinformatics. ## Key Features - **Zero external dependencies** - Uses...
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7,922
Support Apache TsFile Datasets
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[ "A large quantity of industrial timeseries data has been stored as TsFile, and I have been constantly hearing about AI fellows complaining about the lack of data or the insufficiency of data quality.\n\nI like the ambition that uses TsFile as the bridge between AI research and industrial analysis requirements. This...
2025-12-31T08:07:51
2026-01-05T08:23:21
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### Feature request I would love to use Hugging Face datasets library to directly load datasets composed of .tsfile files, for example: `ds = load_dataset("username/dataset-with-tsfile-files")` This feature would allow researchers working on time-series tasks to seamlessly integrate datasets stored in the Apache TsF...
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Add beginner-friendly quick installation verification tip in README
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2025-12-29T09:22:27
2025-12-29T09:22:27
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This PR adds a small beginner-friendly tip to help users quickly verify whether 🤗 Datasets is installed correctly by loading a simple dataset. This improves onboarding experience for first-time users and reduces confusion for beginners.
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Add progress_format support for machine-readable progress output
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2025-12-28T22:35:24
2025-12-28T22:35:24
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## Summary Adds support to , enabling machine-readable JSON progress output similar to [huggingface/tokenizers#1921](https://github.com/huggingface/tokenizers/pull/1921). ## Motivation When using `datasets` in automated pipelines or UI applications, it's useful to emit machine-readable progress instead of ANSI prog...
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Fix load_from_disk progress bar with redirected stdout
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[ "this seems to contradict the comment that says \r\n\r\n> set `disable=None` rather than `disable=False` by default to disable progress bar when no TTY attached\r\n\r\nI believe the right approach is to do the same as in https://github.com/huggingface/huggingface_hub/pull/2698", "> this seems to contradict the co...
2025-12-28T15:39:31
2026-01-16T14:44:49
2026-01-16T14:44:49
CONTRIBUTOR
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Fixes #7918 ## Problem When using `load_from_disk()` with `contextlib.redirect_stdout()`, the progress bar was not showing even for datasets with >16 files. ## Root Cause The `disable` parameter was set to `None` which triggers TTY auto-detection. This fails when stdout is redirected, causing the progress ba...
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