Title: common_voice_11_0.py failure in dataset library
State: open

### Describe the bug

I tried to download dataset but have got this error:

from datasets import load_dataset
load_dataset("mozilla-foundation/common_voice_11_0", "en", split="test", streaming=True) 
---------------------------------------------------------------------------
RuntimeError                              Traceback (most recent call last)
Cell In[8], line 4
      1 from datasets import load_dataset
----> 4 load_dataset("mozilla-foundation/common_voice_11_0", "en", split="test", streaming=True)

File c:\Users\ege_g\AppData\Local\Programs\Python\Python312\Lib\site-packages\datasets\load.py:1392, in load_dataset(path, name, data_dir, data_files, split, cache_dir, features, download_config, download_mode, verification_mode, keep_in_memory, save_infos, revision, token, streaming, num_proc, storage_options, **config_kwargs)
   1387 verification_mode = VerificationMode(
   1388     (verification_mode or VerificationMode.BASIC_CHECKS) if not save_infos else VerificationMode.ALL_CHECKS
   1389 )
   1391 # Create a dataset builder
-> 1392 builder_instance = load_dataset_builder(
   1393     path=path,
   1394     name=name,
   1395     data_dir=data_dir,
   1396     data_files=data_files,
   1397     cache_dir=cache_dir,
   1398     features=features,
   1399     download_config=download_config,
   1400     download_mode=download_mode,
   1401     revision=revision,
   1402     token=token,
   1403     storage_options=storage_options,
   1404     **config_kwargs,
   1405 )
   1407 # Return iterable dataset in case of streaming
   1408 if streaming:

File c:\Users\ege_g\AppData\Local\Programs\Python\Python312\Lib\site-packages\datasets\load.py:1132, in load_dataset_builder(path, name, data_dir, data_files, cache_dir, features, download_config, download_mode, revision, token, storage_options, **config_kwargs)
   1130 if features is not None:
   1131     features = _fix_for_backward_compatible_features(features)
-> 1132 dataset_module = dataset_module_factory(
   1133     path,
   1134     revision=revision,
   1135     download_config=download_config,
   1136     download_mode=download_mode,
   1137     data_dir=data_dir,
   1138     data_files=data_files,
   1139     cache_dir=cache_dir,
   1140 )
   1141 # Get dataset builder class
   1142 builder_kwargs = dataset_module.builder_kwargs

File c:\Users\ege_g\AppData\Local\Programs\Python\Python312\Lib\site-packages\datasets\load.py:1031, in dataset_module_factory(path, revision, download_config, download_mode, data_dir, data_files, cache_dir, **download_kwargs)
   1026             if isinstance(e1, FileNotFoundError):
   1027                 raise FileNotFoundError(
   1028                     f"Couldn't find any data file at {relative_to_absolute_path(path)}. "
   1029                     f"Couldn't find '{path}' on the Hugging Face Hub either: {type(e1).__name__}: {e1}"
   1030                 ) from None
-> 1031             raise e1 from None
   1032 else:
   1033     raise FileNotFoundError(f"Couldn't find any data file at {relative_to_absolute_path(path)}.")

File c:\Users\ege_g\AppData\Local\Programs\Python\Python312\Lib\site-packages\datasets\load.py:989, in dataset_module_factory(path, revision, download_config, download_mode, data_dir, data_files, cache_dir, **download_kwargs)
    981 try:
    982     api.hf_hub_download(
    983         repo_id=path,
    984         filename=filename,
   (...)
    987         proxies=download_config.proxies,
    988     )
--> 989     raise RuntimeError(f"Dataset scripts are no longer supported, but found {filename}")
    990 except EntryNotFoundError:
    991     # Use the infos from the parquet export except in some cases:
    992     if data_dir or data_files or (revision and revision != "main"):

RuntimeError: Dataset scripts are no longer supported, but found common_voice_11_0.py

### Steps to reproduce the bug

from datasets import load_dataset
load_dataset("mozilla-foundation/common_voice_11_0", "en", split="test", streaming=True)


### Expected behavior

its supposed to download this dataset.

### Environment info

Python 3.12 , Windows 11 

Comments: Hi ! This dataset is not in a supported format and `datasets` 4 doesn't support datasets that based on python scripts which are often source of errors. Feel free to ask the dataset authors to convert the dataset to a supported format at https://huggingface.co/datasets/mozilla-foundation/common_voice_11_0/discussions, e.g. parquet.

In the meantime you can pin old versions of `datasets` like `datasets==3.6.0`Thanks @lhoestq! I encountered the same issue and switching to an older version of `datasets` worked.>which version of datasets worked for you, I tried switching to 4.6.0 and also moved back for fsspec, but still facing issues for this.

Try datasets<=3.6.0same issue