FastAPI Introduction - Build Your First Web App

In this Tutorial we have a look at some of its key features and then we build our first web application with it.


FastAPI is a modern, fast web framework for building APIs with Python. In this Tutorial we have a look at some of its key features and then we build our first web application with it.

The key features are:

  • Fast: Very high performance, on par with NodeJS and Go (thanks to Starlette and Pydantic). One of the fastest Python frameworks available.
  • Fast to code: Increase the speed to develop new features.
  • Fewer bugs.
  • Easy and intuitive.
  • Short: Minimize code duplication.
  • Robust: Get production-ready code.
  • Standards-based: Based on OpenAPI and JSON Schema.
  • Automatic interactive documentation.
  • Automatic type validation.

They have an awesome documentation with many tutorials that are easy to follow, so I recommend to check out the official website:


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