jamesLeeeeeee/datasets-github-issues huggingface dataset:
Raise a different exception for inexisting dataset vs files without known extension
Author: severo | Pull request: no | State: closed

See https://github.com/huggingface/datasets-server/issues/2082#issuecomment-1805716557

We have the same error for:
- https://huggingface.co/datasets/severo/a_dataset_that_does_not_exist: a dataset that does not exist
- https://huggingface.co/datasets/severo/test_files_without_extension: a dataset with files without a known extension

```
>>> import datasets
>>> datasets.get_dataset_config_names('severo/a_dataset_that_does_not_exist')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/slesage/hf/datasets-server/services/worker/.venv/lib/python3.9/site-packages/datasets/inspect.py", line 351, in get_dataset_config_names
    dataset_module = dataset_module_factory(
  File "/home/slesage/hf/datasets-server/services/worker/.venv/lib/python3.9/site-packages/datasets/load.py", line 1508, in dataset_module_factory
    raise FileNotFoundError(
FileNotFoundError: Couldn't find a dataset script at /home/slesage/hf/datasets-server/services/worker/severo/a_dataset_that_does_not_exist/a_dataset_that_does_not_exist.py or any data file in the same directory. Couldn't find 'severo/a_dataset_that_does_not_exist' on the Hugging Face Hub either: FileNotFoundError: Dataset 'severo/a_dataset_that_does_not_exist' doesn't exist on the Hub. If the repo is private or gated, make sure to log in with `huggingface-cli login`.
>>> datasets.get_dataset_config_names('severo/test_files_without_extension')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/slesage/hf/datasets-server/services/worker/.venv/lib/python3.9/site-packages/datasets/inspect.py", line 351, in get_dataset_config_names
    dataset_module = dataset_module_factory(
  File "/home/slesage/hf/datasets-server/services/worker/.venv/lib/python3.9/site-packages/datasets/load.py", line 1508, in dataset_module_factory
    raise FileNotFoundError(
FileNotFoundError: Couldn't find a dataset script at /home/slesage/hf/datasets-server/services/worker/severo/test_files_without_extension/test_files_without_extension.py or any data file in the same directory. Couldn't find 'severo/test_files_without_extension' on the Hugging Face Hub either: FileNotFoundError: No (supported) data files or dataset script found in severo/test_files_without_extension.
```

To differentiate, we must parse the error message (only the end is different). We should have a different exception for these two errors.
Add ability to set lock type
Author: leoleoasd | Pull request: no | State: closed

### Feature request

Allow setting file lock type, maybe from an environment variable

Currently, it only depends on whether fnctl is available:

https://github.com/huggingface/datasets/blob/12ebe695b4748c5a26e08b44ed51955f74f5801d/src/datasets/utils/filelock.py#L463-L470C16

### Motivation

In my environment, flock isn't supported on a network attached drive

### Your contribution

I'll be happy to submit a pr.
TorchFormatter images (H, W, C) instead of (C, H, W) format
Author: Modexus | Pull request: no | State: open

### Describe the bug

Using .set_format("torch") leads to images having shape (H, W, C), the same as in numpy. 
However, pytorch normally uses (C, H, W) format.

Maybe I'm missing something but this makes the format a lot less useful as I then have to permute it anyways.
If not using the format it is possible to directly use torchvision transforms but any non-transformed value will not be a tensor.

Is there a reason for this choice?

### Steps to reproduce the bug

```python
from datasets import Dataset, Features, Audio, Image
images = ["path/to/image.png"] * 10
features = Features({"image": Image()})
ds = Dataset.from_dict({"image": images}, features=features) 
ds = ds.with_format("torch")
ds[0]["image"].shape
```
```python
torch.Size([512, 512, 4])
```

### Expected behavior

```python
from datasets import Dataset, Features, Audio, Image
images = ["path/to/image.png"] * 10
features = Features({"image": Image()})
ds = Dataset.from_dict({"image": images}, features=features) 
ds = ds.with_format("torch")
ds[0]["image"].shape
```
```python
torch.Size([4, 512, 512])
```

### Environment info

- `datasets` version: 2.14.6
- Platform: Linux-6.5.9-100.fc37.x86_64-x86_64-with-glibc2.31
- Python version: 3.11.6
- Huggingface_hub version: 0.18.0
- PyArrow version: 14.0.1
- Pandas version: 2.1.2
Filter occasionally hangs
Author: dakinggg | Pull request: no | State: open

### Describe the bug

A call to `.filter` occasionally hangs (after the filter is complete, according to tqdm)

There is a trace produced
```
Exception ignored in: <function Dataset.__del__ at 0x7efb48130c10>
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/datasets/arrow_dataset.py", line 1366, in __del__
    if hasattr(self, "_indices"):
  File "/usr/lib/python3/dist-packages/composer/core/engine.py", line 123, in sigterm_handler
    sys.exit(128 + signal)
SystemExit: 143
```

but I'm not sure if the trace is actually from `datasets`, or from surrounding code that is trying to clean up after datasets gets stuck.

Unfortunately I can't reproduce this issue anywhere close to reliably. It happens infrequently when using `num_procs > 1`. Anecdotally I started seeing it when using larger datasets (~10M samples).

### Steps to reproduce the bug

N/A see description

### Expected behavior

map/filter calls always complete sucessfully

### Environment info

- `datasets` version: 2.14.6
- Platform: Linux-5.4.0-137-generic-x86_64-with-glibc2.31
- Python version: 3.10.13
- Huggingface_hub version: 0.17.3
- PyArrow version: 13.0.0
- Pandas version: 2.1.2
Webdataset dataset builder
Author: lhoestq | Pull request: yes | State: closed

Allow `load_dataset` to support the Webdataset format.

It allows users to download/stream data from local files or from the Hugging Face Hub.

Moreover it will enable the Dataset Viewer for Webdataset datasets on HF.

## Implementation details

- I added a new Webdataset builder
- dataset with TAR files are now read using the Webdataset builder
- Basic decoding from `webdataset` is used by default, except unsafe ones like pickle
- HF authentication support is done by registering a `webdataset.gopen` reader
- `webdataset` uses buffering when reading files, so I had to add buffering support in `xopen`

## TODOS

- [x] tests
- [x] docs
handle future deprecation argument
Author: winglian | Pull request: yes | State: closed

getting this error:
```
/root/miniconda3/envs/py3.10/lib/python3.10/site-packages/datasets/table.py:1387: FutureWarning: promote has been superseded by mode='default'.
  return cls._concat_blocks(pa_tables_to_concat_vertically, axis=0)
```

Since datasets supports arrow greater than 8.0.0, we need to handle both cases.

[Arrow v14 docs](https://arrow.apache.org/docs/python/generated/pyarrow.concat_tables.html)
[Arrow v13 docs](https://arrow.apache.org/docs/13.0/python/generated/pyarrow.concat_tables.html)
How to create 3d medical imgae dataset?
Author: QingYunA | Pull request: no | State: open

### Feature request

I am newer to huggingface, after i look up `datasets` docs, I can't find how to create the dataset contains 3d medical image (ends with '.mhd', '.dcm', '.nii')

### Motivation

help us to upload 3d medical dataset to huggingface!

### Your contribution

I'll submit a PR if I find a way to add this feature
How to load existing downloaded dataset ?
Author: liming-ai | Pull request: no | State: closed

Hi @mariosasko @lhoestq  @katielink 

Thanks for your contribution and hard work.

### Feature request

First, I download a dataset as normal by:
```
from datasets import load_dataset

dataset = load_dataset('username/data_name', cache_dir='data')
```

The dataset format in `data` directory will be:
```
-data
  |-data_name
    |-test-00000-of-00001-bf4c733542e35fcb.parquet
    |-train-00000-of-00001-2a1df75c6bce91ab.parquet
```


Then I use SCP to clone this dataset into another machine, and then try:
```
from datasets import load_dataset

dataset = load_dataset('data/data_name')  # load from local path
```

This leads to re-generating training and validation split for each time, and the disk quota will be duplicated occupation.

How can I just load the dataset without generating and saving these splits again?

### Motivation

I do not want to download the same dataset in two machines, scp is much faster and better than HuggingFace API. I hope we can directly load the downloaded datasets (.parquest)

### Your contribution

Please refer to the feature
Formatting overhead
Author: d-miketa | Pull request: no | State: closed

### Describe the bug

Hi! I very recently noticed that my training time is dominated by batch formatting. Using Lightning's profilers, I located the bottleneck within `datasets.formatting.formatting` and then narrowed it down with `line-profiler`. It turns out that almost all of the overhead is due to creating new instances of `self.python_arrow_extractor`. I admit I'm confused why that could be the case - as far as I can tell there's no complex `__init__` logic to execute.

![image](https://github.com/huggingface/datasets/assets/320321/5e022e0b-0d21-43d0-8e6f-9e641142e96b)

### Steps to reproduce the bug

1. Set up a dataset `ds` with potentially several (4+) columns (not sure if this is necessary, but it did at one point of the investigation make overhead worse)
2. Process it using a custom transform, `ds = ds.with_transform(transform_func)`
3. Decorate this function https://github.com/huggingface/datasets/blob/main/src/datasets/formatting/formatting.py#L512 with `@profile` from https://pypi.org/project/line-profiler/
4. Profile with `$ kernprof -l script_to_profile.py`

### Expected behavior

Batch formatting should have acceptable overhead.

### Environment info

```
datasets=2.14.6
pyarrow=14.0.0
```
Get an error when i try to concatenate the squad dataset with my own dataset
Author: CCDXDX | Pull request: no | State: closed

### Describe the bug

Hello,

I'm new here and I need to concatenate the squad dataset with my own dataset i created. I find the following error when i try to do it: Traceback (most recent call last):

  Cell In[9], line 1
    concatenated_dataset = concatenate_datasets([train_dataset, dataset1])

  File ~\anaconda3\Lib\site-packages\datasets\combine.py:213 in concatenate_datasets
    return _concatenate_map_style_datasets(dsets, info=info, split=split, axis=axis)

  File ~\anaconda3\Lib\site-packages\datasets\arrow_dataset.py:6002 in _concatenate_map_style_datasets
    _check_if_features_can_be_aligned([dset.features for dset in dsets])

  File ~\anaconda3\Lib\site-packages\datasets\features\features.py:2122 in _check_if_features_can_be_aligned
    raise ValueError(

ValueError: The features can't be aligned because the key answers of features {'id': Value(dtype='string', id=None), 'title': Value(dtype='string', id=None), 'context': Value(dtype='string', id=None), 'question': Value(dtype='string', id=None), 'answers': Sequence(feature={'text': Value(dtype='string', id=None), 'answer_start': Value(dtype='int32', id=None)}, length=-1, id=None)} has unexpected type - Sequence(feature={'text': Value(dtype='string', id=None), 'answer_start': Value(dtype='int32', id=None)}, length=-1, id=None) (expected either {'answer_start': Sequence(feature=Value(dtype='int64', id=None), length=-1, id=None), 'text': Value(dtype='string', id=None)} or Value("null").

### Steps to reproduce the bug

```python

from huggingface_hub import notebook_login
from datasets import load_dataset



notebook_login("mymailadresse", "mypassword")
squad = load_dataset("squad", split="train[:5000]")
squad = squad.train_test_split(test_size=0.2)
dataset1 = squad["train"]




import json

mybase = [
    {
        "id": "1",
        "context": "She lives in Nantes",
        "question": "Where does she live?",
        "answers": {
            "text": "Nantes",
            "answer_start": [13],
        }
    }
]




# Save the data to a JSON file
json_file_path = r"C:\Users\mypath\thefile.json"
with open(json_file_path, "w", encoding= "utf-8") as json_file:
    json.dump(mybase, json_file, indent=4)




# Load the JSON file as a dataset
custom_dataset = load_dataset("json", data_files=json_file_path)


# Access the train split
train_dataset = custom_dataset["train"]


from datasets import concatenate_datasets


# Concatenate the datasets
concatenated_dataset = concatenate_datasets([train_dataset, dataset1])
```

### Expected behavior

I would expect the two datasets to be concatenated without error. The len(dataset1) is equal to 4000 and the len(train_dataset) is equal to 1 so I would exepect concatenated_dataset to be created and having lenght 4001.

### Environment info

Python 3.11.4 and using windows

Thank you for your help
imagenet-1k downloads over and over
Author: seann999 | Pull request: no | State: closed

### Describe the bug

What could be causing this?
```
$ python3
Python 3.8.13 (default, Mar 28 2022, 11:38:47) 
[GCC 7.5.0] :: Anaconda, Inc. on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from datasets import load_dataset
>>> load_dataset("imagenet-1k")
Downloading builder script: 100%|██████████| 4.72k/4.72k [00:00<00:00, 7.51MB/s]
Downloading readme: 100%|███████████████████| 85.4k/85.4k [00:00<00:00, 510kB/s]
Downloading extra modules: 100%|████████████| 46.4k/46.4k [00:00<00:00, 300kB/s]
Downloading data: 100%|████████████████████| 29.1G/29.1G [19:36<00:00, 24.8MB/s]
Downloading data: 100%|████████████████████| 29.3G/29.3G [08:38<00:00, 56.5MB/s]
Downloading data: 100%|████████████████████| 29.0G/29.0G [09:26<00:00, 51.2MB/s]
Downloading data: 100%|████████████████████| 29.2G/29.2G [09:38<00:00, 50.6MB/s]
Downloading data: 100%|███████████████████▉| 29.2G/29.2G [09:37<00:00, 44.1MB/s^Downloading data:   0%|                     | 106M/29.1G [00:05<23:49, 20.3MB/s]
```

### Steps to reproduce the bug

See above commands/code

### Expected behavior

imagenet-1k is downloaded

### Environment info

- `datasets` version: 2.14.6
- Platform: Linux-6.2.0-34-generic-x86_64-with-glibc2.17
- Python version: 3.8.13
- Huggingface_hub version: 0.15.1
- PyArrow version: 14.0.0
- Pandas version: 1.5.2
Add CheXpert dataset for vision
Author: SauravMaheshkar | Pull request: no | State: open

### Feature request

### Name 

**CheXpert: A Large Chest Radiograph Dataset with Uncertainty Labels and Expert Comparison**

### Paper

https://arxiv.org/abs/1901.07031

### Data

https://stanfordaimi.azurewebsites.net/datasets/8cbd9ed4-2eb9-4565-affc-111cf4f7ebe2

### Motivation

CheXpert is one of the fundamental models in medical image classification and can serve as a viable pre-training dataset for radiology classification or low-scale ablation / exploratory studies.

This could also serve as a good pre-training dataset for Kaggle competitions.

### Your contribution

Would love to make a PR and pre-process / get this into 🤗
Add my dataset
Author: keyur536 | Pull request: yes | State: closed

## medical data

**Description:**
This dataset, named "medical data," is a collection of text data from various sources, carefully curated and cleaned for use in natural language processing (NLP) tasks. It consists of a diverse range of text, including articles, books, and online content, covering topics from science to literature.

**Citation:**
If applicable, please include a citation for this dataset to give credit to the original sources or contributors.

**Key Features:**
- Language: The text is primarily in English, but it may include content in other languages as well.
- Use Cases: This dataset is suitable for text classification, language modeling, sentiment analysis, and other NLP tasks.

**Usage:**
To access this dataset, use the `load_your_dataset` function provided in the `your_dataset.py` script within this repository. You can specify the dataset split you need, such as "train," "test," or "validation," to get the data for your specific task.

**Contributors:**
- [Keyur Chaudhari]

**Contact:**
If you have any questions or need assistance regarding this dataset, please feel free to contact [keyurchaudhari536@gmail.com].

Please note that this dataset is shared under a specific license, which can be found in the [LICENSE](link to your dataset's license) file. Make sure to review and adhere to the terms of the license when using this dataset for your projects.
Fix for continuation behaviour on broken dataset archives due to starving download connections via HTTP-GET
Author: RuntimeRacer | Pull request: yes | State: open

This PR proposes a (slightly hacky) fix for an Issue that can occur when downloading large dataset parts over unstable connections.
The underlying issue is also being discussed in https://github.com/huggingface/datasets/issues/5594.

Issue Symptoms & Behaviour:
- Download of a large archive file during dataset download via HTTP-GET fails.
- An silent net exception (which I was unable to identify) is thrown within the `tqdm` download progress.
- Due to missing exception catch code, the above process just continues processing, assuming `http_get` completed successfully.
- Pending Archive file gets renamed to remove the `.incomplete` extension, despite not all data has been downloaded. 
- Also, for reasons I did not investigate, there seems to be no real integrity check for the downloaded files; or it does not detect this problem. This is especially problematic, since the downloader script won't retry downloading this archive after CRC-Checking, even if it is being manually restarted / executed again after running into errors on extraction.

Fix proposal: Adding a retry mechanic for HTTP-GET downloads, which adds the following behaviour:
- Download Progress Thread checks for download size validity in case the HTTP connection starves mid download. If the check fails, a RuntimeError is thrown
- Cache Downloader code with retry mechanic monitors for an exception thrown by the download progress thread, and retries download with updated `resume_size`.
- Cache Downloader will not mark incomplete files which have thrown an exception during download, and exceeded retries, as complete.
Caching problem when deleting a dataset 
Author: clefourrier | Pull request: no | State: closed

### Describe the bug

Pushing a dataset with n + m features to a repo which was deleted, but contained n features, will fail.

### Steps to reproduce the bug

1. Create a dataset with n features per row
2. `dataset.push_to_hub(YOUR_PATH, SPLIT, token=TOKEN)`
3. Go on the hub, delete the repo at `YOUR_PATH`
4. Update your local dataset to have n + m features per row
5. `dataset.push_to_hub(YOUR_PATH, SPLIT, token=TOKEN)` will fail because of a mismatch in features number


### Expected behavior

Step 5 should work or display a message to indicate the cache has not been cleared

### Environment info

- `datasets` version: 2.12.0
- Platform: Linux-5.15.0-88-generic-x86_64-with-glibc2.31
- Python version: 3.10.10
- Huggingface_hub version: 0.16.4
- PyArrow version: 11.0.0
- Pandas version: 2.0.0
CI is broken: TypeError: Couldn't cast array
Author: albertvillanova | Pull request: no | State: closed

See: https://github.com/huggingface/datasets/actions/runs/6730567226/job/18293518039
```
FAILED tests/test_table.py::test_cast_sliced_fixed_size_array_to_features - TypeError: Couldn't cast array of type
fixed_size_list<item: int32>[3]
to
Sequence(feature=Value(dtype='int64', id=None), length=3, id=None)
```
`Dataset.from_generator` should not try to download from HF GCS
Author: yundai424 | Pull request: no | State: closed

### Describe the bug

When using [`Dataset.from_generator`](https://github.com/huggingface/datasets/blob/c9c1166e1cf81d38534020f9c167b326585339e5/src/datasets/arrow_dataset.py#L1072) with `streaming=False`, the internal logic will call [`download_and_prepare`](https://github.com/huggingface/datasets/blob/main/src/datasets/io/generator.py#L47) which will attempt to download from HF GCS which is redundant, because user has already provided the generator from which the data should be drawn. 

If someone attempts to call `Dataset.from_generator` from an environment that doesn't have external internet access (for example internal production machine) and doesn't set `HF_DATASETS_OFFLINE=1`, this will result in process being stuck at building connection.

### Steps to reproduce the bug

```python
import datasets
def gen():
    for _ in range(100):
        yield {"text": "dummy text"}

dataset = datasets.Dataset.from_generator(gen)
```

A minimum example executed on any environment that doesn't have access to HF GCS can result in the error

### Expected behavior

`try_from_hf_gcs` should be set to False here https://github.com/huggingface/datasets/blob/c9c1166e1cf81d38534020f9c167b326585339e5/src/datasets/io/generator.py#L51

### Environment info

- `datasets` version: 2.14.4
- Platform: Linux-3.10.0-1160.90.1.el7.x86_64-x86_64-with-glibc2.17
- Python version: 3.10.12
- Huggingface_hub version: 0.17.1
- PyArrow version: 12.0.1
- Pandas version: 2.0.3
TensorDataset format does not work with Trainer from transformers
Author: jinzzasol | Pull request: no | State: closed

### Describe the bug

The model was built to do fine tunning on BERT model for relation extraction.

trainer.train() returns an error message ```TypeError: vars() argument must have __dict__ attribute``` when it has `train_dataset` generated from `torch.utils.data.TensorDataset`

However, in the document, the required data format is `torch.utils.data.TensorDataset`. 
![image](https://github.com/huggingface/datasets/assets/49014051/36fa34ac-3127-4c64-9580-9ab736136d83)

Transformers trainer is supposed to accept the train_dataset in the format of torch.utils.data.TensorDataset, but it returns error message *"TypeError: vars() argument must have __dict__ attribute"*

```
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-30-5df728c929a2> in <cell line: 1>()
----> 1 trainer.train()
      2 trainer.evaluate(test_dataset)

9 frames
/usr/local/lib/python3.10/dist-packages/transformers/data/data_collator.py in <listcomp>(.0)
    107 
    108     if not isinstance(features[0], Mapping):
--> 109         features = [vars(f) for f in features]
    110     first = features[0]
    111     batch = {}

TypeError: vars() argument must have __dict__ attribute
```

### Steps to reproduce the bug

Create train_dataset using `torch.utils.data.TensorDataset`, for instance,

```train_dataset = torch.utils.data.TensorDataset(train_input_ids, train_attention_masks, train_labels)```

Feed this `train_dataset` to your trainer and run trainer.train

```
trainer = Trainer(model,
                  training_args,
                  train_dataset=train_dataset,
                  eval_dataset=dev_dataset,
                  compute_metrics=compute_metrics,
                  )
```

### Expected behavior

Trainer should start training

### Environment info

It is running on Google Colab

- `datasets` version: 2.14.6
- Platform: Linux-5.15.120+-x86_64-with-glibc2.35
- Python version: 3.10.12
- Huggingface_hub version: 0.17.3
- PyArrow version: 9.0.0
- Pandas version: 1.5.3