FastAPI is a web framework used for building APIs with Python 3.6+ based on standard Python type hints. It is hella fast (they were not kidding when they named it), easy to code with and guarantees up to 40% less bugs.
Based on official documentation one of the key features of this framework is increasing the speed of development features by about 200% to 300% it's great,really.
Because of supporting Python type hints, editors have great support for code completion everywhere, so you spend less time debugging.
FastAPI is fully compatible with the open standards for APIs: OpenAPI (known as Swagger) and JSON Schema. It's easy to use and learn and has a clear and straightforward documentation.