FastAPI
FastAPI is a modern, high-performance web framework for building APIs with Python 3.6+ based on standard Python type hints. It's very fast and easy to use, has automatic validation, OpenAPI docs, and more.
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FastAPI: High-Performance Web Framework for Building APIs with Python 3.6+
FastAPI is a modern, high-performance web framework for building APIs with Python 3.6+ based on standard Python type hints. It's very fast and easy to use, has automatic validation, OpenAPI docs, and more.
What is FastAPI?
FastAPI is a modern, high-performance web framework for building APIs with Python 3.6+ based on standard Python type hints. Here are some key features of FastAPI:
- Very fast - benchmarks show it's one of the fastest Python frameworks available.
- Easy to use - designed to be easy and intuitive with minimal boilerplate code needed.
- Automatic validation - leverage Python type hints to auto-validate requests and responses.
- Automatic OpenAPI docs - auto-generate interactive API docs for your APIs.
- More features - Async support, dependency injection, background tasks, middleware, testing, and more.
FastAPI is well-suited for building performant production-ready APIs. It's based on standards like OpenAPI and JSON Schema and works great with other tools like Docker, MongoDB, SQL databases, and more. Compared to Flask or Django, FastAPI shines for building APIs and abstracting a lot of the repetitive work needed when handling web requests and responses.
FastAPI Features
Features
- Built on top of Starlette and Pydantic
- Automatic interactive API documentation using OpenAPI
- Data validation using Python type hints
- High performance
- Easy to use and learn
- Asynchronous request handling
- Automatic CORS support
- Easy to integrate with ORMs and databases
- Auto-generate clients from OpenAPI schema
- Supports GraphQL
Pricing
- Open Source
Pros
Very fast performance
Intuitive and easy to use
Interactive API documentation
Data validation out of the box
Asynchronous support
Auto-generate clients
Great for rapid API development
Cons
Less flexible than Flask for some use cases
Smaller ecosystem than Django REST Framework
Still relatively new, less established than some alternatives
Official Links
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