beginner-langchain-qa-bot

Simple Q&A chatbot using LangChain (LCEL) and OpenAI. Includes a CLI script and a notebook.

Contents

• app.py — CLI chatbot with in‑memory chat history (LangChain + ChatOpenAI)
• qa_chatbot.ipynb — Notebook version for interactive runs
• requirements.txt — Python dependencies
• .env.example — Template for environment variables
• .gitignore — Ignores .env, caches, notebook checkpoints
• README.md — Repo overview

Requirements

• Python 3.10+
• OPENAI_API_KEY in a .env file (copy from .env.example)

Quickstart

python3 -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt
python app.py