Files
langchain-python/langchain/vectorstores/base.py
T
Samantha Whitmore 09f301cd38 Add add_example method to all ExampleSelector classes, with tests (#178)
Also updated docs, and noticed an issue with the add_texts method on
VectorStores that I had missed before -- the metadatas arg should be
required to match the classmethod which initializes the VectorStores
(the add_example methods break otherwise in the ExampleSelectors)
2022-11-23 13:12:47 -08:00

32 lines
933 B
Python

"""Interface for vector stores."""
from abc import ABC, abstractmethod
from typing import Any, Iterable, List, Optional
from langchain.docstore.document import Document
from langchain.embeddings.base import Embeddings
class VectorStore(ABC):
"""Interface for vector stores."""
@abstractmethod
def add_texts(
self, texts: Iterable[str], metadatas: Optional[List[dict]] = None
) -> None:
"""Run more texts through the embeddings and add to the vectorstore."""
@abstractmethod
def similarity_search(self, query: str, k: int = 4) -> List[Document]:
"""Return docs most similar to query."""
@classmethod
@abstractmethod
def from_texts(
cls,
texts: List[str],
embedding: Embeddings,
metadatas: Optional[List[dict]] = None,
**kwargs: Any
) -> "VectorStore":
"""Return VectorStore initialized from texts and embeddings."""