Python has an embarrasment of riches when it comes to web frameworks, each with their own particular strengths. FastAPI is a new entrant that has been quickly gaining popularity as a performant and easy to use toolchain for building RESTful web services. In this episode Sebastián Ramirez shares the story of the frustrations that led him to create a new framework, how he put in the extra effort to make the developer experience as smooth and painless as possible, and how he embraces extensability with lightweight dependency injection and a straightforward plugin interface. If you are starting a new web application today then FastAPI should be at the top of your list.
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- Your host as usual is Tobias Macey and today I’m interviewing Sebastián Ramirez about FastAPI, a framework for building production ready APIs in Python 3
- How did you get introduced to Python?
- Can you start by describing what FastAPI is?
- What are the main frustrations that you ran into with other frameworks that motivated you to create an entirely new one?
- What are some of the main use cases that FastAPI is designed for?
- Many web frameworks focus on managing the end-to-end functionality of a website, including the UI. Why did you focus on just API capabilities?
- What are the benefits of building an API only framework?
- If you wanted to integrate a presentation layer, what would be involved in that effort?
- What API formats does FastAPI support?
- What would be involved in adding support for additional specifications such as GraphQL or JSON-LD?
- There are a huge number of web frameworks available just in the Python ecosystem. How does FastAPI fit into that landscape and why might someone choose it over the other options?
- Can you share your design philosophy for the project?
- What are your main sources of inspiration for the framework?
- You have also built the Typer CLI library which you refer to as the little sibling of FastAPI. How have your experiences building these two projects influenced their counterpart’s evolution?
- What are the benefits of incorporating type annotations into a web framework and in what ways do they manifest in its functionality?
- What is the workflow for a developer building a complex application in FastAPI?
- Can you describe how FastAPI itself is architected and how its design has evolved since you first began working on it?
- What are the extension points that are available for someone to build plugins for FastAPI?
- What are some of the challenges that you have faced in building an async framework that is leveraging the new ASGI specification?
- What are some sharp edges that users should keep an eye out for?
- What are some unique or underutilized features of FastAPI that users might not be aware of?
- What are some of the most interesting, unexpected, or innovative ways that you have seen FastAPI used?
- When is FastAPI the wrong choice?
- What are some of the most interesting, unexpected, or challenging lessons that you have learned in the process of building and maintaining FastAPI?
- What do you have planned for the future of the project?
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@tiangolo on GitHub.
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The intro and outro music is from Requiem for a Fish The Freak Fandango Orchestra / CC BY-SA