I'm trying to build a simple RAG, and I'm stuck at this code:
from langchain.embeddings.huggingface import HuggingFaceEmbeddings
from llama_index import LangchainEmbedding, ServiceContext
embed_model = LangchainEmbedding(
HuggingFaceEmbeddings(model_name="thenlper/gte-large")
)
service_context = ServiceContext.from_defaults(
chunk_size=256,
llm=llm,
embed_model=embed_model
)
index = VectorStoreIndex.from_documents(documents, service_context=service_context)
where I get ImportError: cannot import name 'LangchainEmbedding' from 'llama_index' How can I solve? Is it related to the fact that I'm working on Colab?
INFO 2024:
This answer worked in 2023 when question was asked
but it seems they moved all code and now you have to use other answers.
Not
from llama_index import LangchainEmbedding
but
from llama_index.embeddings import LangchainEmbedding
(See source code for llama_index/embeddings/__ init__.py)