Python FastAPI Tutorial (Part 1): Getting Started - Web App + REST API

FastAPI tutorial covering initial setup and basic concepts. Demonstrates installing FastAPI with standard extras, creating a basic application instance, defining routes using decorators, returning JSON responses, and accessing automatic API documentation at /docs and /redoc. Shows how to create both API endpoints that return JSON and HTML routes for browser viewing, use dummy data with dictionaries, stack decorators for multiple URLs, and exclude HTML routes from API documentation using include_in_schema parameter. Introduces the FastAPI CLI dev mode for auto-reload during development.