What is FastAPI ?

FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints. FastAPI is popular primarily because of its high performance and very quick setup.

Features of FastAPI

Here is a detailed description of FastAPI's features:

• Fast -
   FastAPI usage Starlette and Pydantic to achieve very high performance, which matches with performance of NodeJS and GO
• Ease of coding - 
  FastAPI usage python type hints to provide completion and editor support, this improves development speed by 200% to 300%.
• Automated documentation - 
  FastAPI automatically generate documentation which saves huge amount of developer's time.
• Robust - 
  FastAPI produces API which are production ready. It usage uvicorn to handle http requests.
• Follows standards - 
  FastAPI generate API are fully compatible with OpenAPI (previously known as Swagger) and JSON Schema.

Other details

FastAPI was created by tiangolo since then it has caught up and many developers from all across world has contributed to it. 

Official website: https://fastapi.tiangolo.com/

Github: https://github.com/tiangolo/fastapi

License
FastAPI is open source and is licensed under the terms of the MIT license.