# Import necessary modules and classes from langchain_community and langchain_core from langchain_community.vectorstores import Chroma from langchain_core.example_selectors import SemanticSimilarityExampleSelector from langchain_openai import OpenAIEmbeddings ## paid from langchain.embeddings import HuggingFaceEmbeddings #free ## setup vector db # Create an instance of Chroma vector store vectorstore = Chroma() # Delete any existing collection in the vector store # vectorstore.delete_collection() […]