langchain==0.0.184 PyPDF2==3.0.1 python-dotenv==1.0.0 streamlit==1.18.1 openai==0.27.6 faiss-cpu==1.7.4 huggingface-hub==0.14.1 # uncomment to use instructor embeddings # InstructorEmbedding==1.0.1 # sentence-transformers==2.2.2