transformers torch plotly pandas numpy flask hypercorn huggingface-hub thread==2.0.5 langchain-community langchain python-dotenv==1.0.1 gradio black pylint pytest torchvision faiss-cpu torchaudio tk-tools nltk==3.9.1 tensor setuptools sentence-transformers accelerate bs4 requests feedparser PyPDF2 cryptography apscheduler tensorflow tensorflow-hub