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Santosh Shelar
Santosh Shelar

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Fast API Basic

FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints. Here's a simple example of how to create a "Hello, World!" API using FastAPI:

Installation: You can install FastAPI and an ASGI server, such as Unicorn, using pip:

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Now, create a new Python file (e.g., and type the following code:

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This code creates a new FastAPI application and defines a single route (/) that returns a JSON object with the message "Hello, World!".

To run the application, use the following command:

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Now, open your web browser and go to 'http://localhost:8000/' to see your API in action. You should see the JSON response:

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API Documentation:
FastAPI generates interactive API documentation automatically.
You can access it by navigating to 'http://localhost:8000/docs' in your browser. This documentation is generated based on the type hints in your code.

Building Complex APIs:
FastAPI supports advanced features such as query parameters, request bodies, dependencies, security, and more. Dive deeper into building robust APIs with FastAPI's powerful capabilities.

Thanks for reading.

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