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Add object parsing functionality (#13864)

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* **Description:** Parses huggingface dataset Sequence objects into
strings for Document loading.
* **Issue:** Fixes #10674 
* **Tag maintainter:** @baskaryan @eyurtsev

---------

Co-authored-by: Amy Han <amyhan@Amys-Air.lan>
Co-authored-by: Amy Han <amyhan@Amys-MacBook-Air.local>
This commit is contained in:
Amyh102 2023-11-28 22:33:16 -05:00 committed by GitHub
parent 981f78f920
commit 750485eaa8
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1 changed files with 7 additions and 5 deletions
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12
libs/langchain/langchain/document_loaders/hugging_face_dataset.py
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@ -1,3 +1,4 @@
import json
from typing import Iterator, List, Mapping, Optional, Sequence, Union
from langchain_core.documents import Document
@ -28,10 +29,6 @@ class HuggingFaceDatasetLoader(BaseLoader):
Args:
path: Path or name of the dataset.
page_content_column: Page content column name. Default is "text".
Note: Currently the function assumes the content is a string.
If it is not download the dataset using huggingface library and convert
using the json or pandas loaders.
https://github.com/langchain-ai/langchain/issues/10674
name: Name of the dataset configuration.
data_dir: Data directory of the dataset configuration.
data_files: Path(s) to source data file(s).
@ -80,7 +77,7 @@ class HuggingFaceDatasetLoader(BaseLoader):
yield from (
Document(
page_content=row.pop(self.page_content_column),
page_content=self.parse_obj(row.pop(self.page_content_column)),
metadata=row,
)
for key in dataset.keys()
@ -90,3 +87,8 @@ class HuggingFaceDatasetLoader(BaseLoader):
def load(self) -> List[Document]:
"""Load documents."""
return list(self.lazy_load())
def parse_obj(self, page_content: Union[str, object]) -> str:
if isinstance(page_content, object):
return json.dumps(page_content)
return page_content