Python Dotenv

Python Dotenv is the helper library used in Brevvie Python + AI — Section 4: APIs, Postman & Calling the Web to load values from a .env file into environment variables inside Python.

Role in the source

• installed as a small dependency
• provides load_dotenv()
• supports the pattern of keeping API keys outside committed code

Why it matters

It turns the Environment Variables pattern into a practical Python workflow for local development.