Fast API Basic

FastAPI is a modern, fast (high-performance) web framework for building APIs with Python, powered by Python type hints. Here’s a simple “Hello, World!” example to get you started.

Installation: Install FastAPI and an ASGI server like Uvicorn using pip:

Now create a Python file (e.g., main.py) and add this code:

This creates a FastAPI application with a single route (/) returning a JSON response.

To run the application, use:

Now open your browser and visit http://localhost:8000/ to see your API in action.

You should see this JSON response:

API Documentation:
FastAPI automatically generates interactive documentation. Check it out at:

It’s generated directly from your type hints — super powerful.

Building Complex APIs:
FastAPI supports query params, request bodies, validation, authentication, dependencies, and much more. It’s perfect for building fast and scalable applications.

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