mirror of
https://github.com/hwchase17/langchain
synced 2024-11-02 09:40:22 +00:00
25fbe356b4
This PR upgrades community to a recent version of mypy. It inserts type: ignore on all existing failures.
60 lines
2.2 KiB
Python
60 lines
2.2 KiB
Python
from typing import Iterator, Optional
|
|
|
|
from langchain_core.documents import Document
|
|
|
|
from langchain_community.document_loaders.base import BaseLoader
|
|
from langchain_community.utilities.wikipedia import WikipediaAPIWrapper
|
|
|
|
|
|
class WikipediaLoader(BaseLoader):
|
|
"""Load from `Wikipedia`.
|
|
|
|
The hard limit on the length of the query is 300 for now.
|
|
|
|
Each wiki page represents one Document.
|
|
"""
|
|
|
|
def __init__(
|
|
self,
|
|
query: str,
|
|
lang: str = "en",
|
|
load_max_docs: Optional[int] = 25,
|
|
load_all_available_meta: Optional[bool] = False,
|
|
doc_content_chars_max: Optional[int] = 4000,
|
|
):
|
|
"""
|
|
Initializes a new instance of the WikipediaLoader class.
|
|
|
|
Args:
|
|
query (str): The query string to search on Wikipedia.
|
|
lang (str, optional): The language code for the Wikipedia language edition.
|
|
Defaults to "en".
|
|
load_max_docs (int, optional): The maximum number of documents to load.
|
|
Defaults to 100.
|
|
load_all_available_meta (bool, optional): Indicates whether to load all
|
|
available metadata for each document. Defaults to False.
|
|
doc_content_chars_max (int, optional): The maximum number of characters
|
|
for the document content. Defaults to 4000.
|
|
"""
|
|
self.query = query
|
|
self.lang = lang
|
|
self.load_max_docs = load_max_docs
|
|
self.load_all_available_meta = load_all_available_meta
|
|
self.doc_content_chars_max = doc_content_chars_max
|
|
|
|
def lazy_load(self) -> Iterator[Document]:
|
|
"""
|
|
Loads the query result from Wikipedia into a list of Documents.
|
|
|
|
Returns:
|
|
A list of Document objects representing the loaded
|
|
Wikipedia pages.
|
|
"""
|
|
client = WikipediaAPIWrapper( # type: ignore[call-arg]
|
|
lang=self.lang,
|
|
top_k_results=self.load_max_docs, # type: ignore[arg-type]
|
|
load_all_available_meta=self.load_all_available_meta, # type: ignore[arg-type]
|
|
doc_content_chars_max=self.doc_content_chars_max, # type: ignore[arg-type]
|
|
)
|
|
yield from client.load(self.query)
|