Python dotenv for LangChain Agents: Safe .env Patterns for RAG, Tools, and Local LLM Apps

Watch: Build a RAG (Retrieval-Augmented Generation) System from Scratch | Python + Vector DB + LLM by CodeVisium Python-dotenv gives local LangChain projects a simple way to keep credentials out of source code while still making them available through os.environ. It works well for solo prototypes,…