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Last updated: August 21, 2026
Build Your Own AI Assistant: A Step-by-Step Tutorial with LangChain and GPT-4
1. Setting Up Your Development Environment
- Install Python 3.9+ and create a virtual environment to isolate dependencies.
- Install required libraries:
langchain,openai,python-dotenv. - Set up your OpenAI API key securely using environment variables (e.g.,
.env🤖 Editor's Pick
Editor's Pick: AI coding notebook for beginners to prototype productivity tools using natural language commands.
