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Use yaml instead of get data patterns when possible #6154

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merged 3 commits into from
Aug 17, 2023
Merged

Use yaml instead of get data patterns when possible #6154

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7f598ea
use yaml data_files instead of get_data_patterns when possible
lhoestq Aug 17, 2023
acac888
minor fix docstring
lhoestq Aug 17, 2023
e8dc4b3
update comment
lhoestq Aug 17, 2023
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2 changes: 1 addition & 1 deletion src/datasets/data_files.py
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Original file line number Diff line number Diff line change
Expand Up @@ -320,7 +320,7 @@ def resolve_pattern(
allowed_extensions (Optional[list], optional): White-list of file extensions to use. Defaults to None (all extensions).
For example: allowed_extensions=[".csv", ".json", ".txt", ".parquet"]
Returns:
List[Union[Path, Url]]: List of paths or URLs to the local or remote files that match the patterns.
List[str]: List of paths or URLs to the local or remote files that match the patterns.
"""
if is_relative_path(pattern):
pattern = xjoin(base_path, pattern)
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18 changes: 12 additions & 6 deletions src/datasets/load.py
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Expand Up @@ -851,7 +851,12 @@ def get_module(self) -> DatasetModule:
# even if metadata_configs_dict is not None (which means that we will resolve files for each config later)
# we cannot skip resolving all files because we need to infer module name by files extensions
base_path = Path(self.path, self.data_dir or "").expanduser().resolve().as_posix()
patterns = sanitize_patterns(self.data_files) if self.data_files is not None else get_data_patterns(base_path)
if self.data_files is not None:
patterns = sanitize_patterns(self.data_files)
if metadata_configs and "data_files" in next(iter(metadata_configs.values())):
patterns = sanitize_patterns(next(iter(metadata_configs.values()))["data_files"])
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what if various configs in the metadata_configs use various type of files? (edge case maybe)

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This is not supported yet, and would require a refactor.

In a subsequent PR we can raise an error if it happens. Currently it raises an error if it fails to load data files if it uses the wrong dataset builder but this is confusing

else:
patterns = get_data_patterns(base_path)
data_files = DataFilesDict.from_patterns(
patterns,
base_path=base_path,
Expand Down Expand Up @@ -1027,11 +1032,12 @@ def get_module(self) -> DatasetModule:
dataset_card_data = DatasetCardData()
metadata_configs = MetadataConfigs.from_dataset_card_data(dataset_card_data)
dataset_infos = DatasetInfosDict.from_dataset_card_data(dataset_card_data)
patterns = (
sanitize_patterns(self.data_files)
if self.data_files is not None
else get_data_patterns(base_path, download_config=self.download_config)
)
if self.data_files is not None:
patterns = sanitize_patterns(self.data_files)
if metadata_configs and "data_files" in next(iter(metadata_configs.values())):
patterns = sanitize_patterns(next(iter(metadata_configs.values()))["data_files"])
else:
patterns = get_data_patterns(base_path, download_config=self.download_config)
data_files = DataFilesDict.from_patterns(
patterns,
base_path=base_path,
Expand Down
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