%pip install--upgrade--quiet  scikit-learn

# # if you plan to use bson serialization, install also:
%pip install--upgrade--quiet  bson

# # if you plan to use parquet serialization, install also:
%pip install--upgrade--quiet  pandas pyarrow

import os
from getpassimport getpass

if"OPENAI_API_KEY"notin os.environ:
    os.environ["OPENAI_API_KEY"]= getpass("Enter your OpenAI key:")

from langchain_community.document_loadersimport TextLoader
from langchain_community.vectorstoresimport SKLearnVectorStore
from langchain_openaiimport OpenAIEmbeddings
from langchain_text_splittersimport CharacterTextSplitter

loader= TextLoader("../../how_to/state_of_the_union.txt")
documents= loader.load()
text_splitter= CharacterTextSplitter(chunk_size=1000, chunk_overlap=0)
docs= text_splitter.split_documents(documents)
embeddings= OpenAIEmbeddings()

import tempfile

persist_path= os.path.join(tempfile.gettempdir(),"union.parquet")

vector_store= SKLearnVectorStore.from_documents(
    documents=docs,
    embedding=embeddings,
    persist_path=persist_path,# persist_path and serializer are optional
    serializer="parquet",
)

query="What did the president say about Ketanji Brown Jackson"
docs= vector_store.similarity_search(query)
print(docs[0].page_content)

Tonight. I call on the Senate to: Pass the Freedom to Vote Act. Pass the John Lewis Voting Rights Act. And while you’re at it, pass the Disclose Act so Americans can know who is funding our elections.

Tonight, I’d like to honor someone who has dedicated his life to serve this country: Justice Stephen Breyer—an Army veteran, Constitutional scholar, and retiring Justice of the United States Supreme Court. Justice Breyer, thank you for your service.

One of the most serious constitutional responsibilities a President has is nominating someone to serve on the United States Supreme Court.

And I did that 4 days ago, when I nominated Circuit Court of Appeals Judge Ketanji Brown Jackson. One of our nation’s top legal minds, who will continue Justice Breyer’s legacy of excellence.

vector_store.persist()
print("Vector store was persisted to", persist_path)

Vector store was persisted to /var/folders/6r/wc15p6m13nl_nl_n_xfqpc5c0000gp/T/union.parquet

vector_store2= SKLearnVectorStore(
    embedding=embeddings, persist_path=persist_path, serializer="parquet"
)
print("A new instance of vector store was loaded from", persist_path)

A new instance of vector store was loaded from /var/folders/6r/wc15p6m13nl_nl_n_xfqpc5c0000gp/T/union.parquet

docs= vector_store2.similarity_search(query)
print(docs[0].page_content)

Tonight. I call on the Senate to: Pass the Freedom to Vote Act. Pass the John Lewis Voting Rights Act. And while you’re at it, pass the Disclose Act so Americans can know who is funding our elections.

Tonight, I’d like to honor someone who has dedicated his life to serve this country: Justice Stephen Breyer—an Army veteran, Constitutional scholar, and retiring Justice of the United States Supreme Court. Justice Breyer, thank you for your service.

One of the most serious constitutional responsibilities a President has is nominating someone to serve on the United States Supreme Court.

And I did that 4 days ago, when I nominated Circuit Court of Appeals Judge Ketanji Brown Jackson. One of our nation’s top legal minds, who will continue Justice Breyer’s legacy of excellence.

os.remove(persist_path)