When building APIs in Python, you often hear about Django and Flask. But recently, FastAPI has been stealing the spotlight, and for good reason. I decided to learn it by diving straight into building a real project.
The Appeal of FastAPI
FastAPI is exactly what it sounds like: fast. It's built on top of Starlette and Pydantic, meaning you get incredible performance and automatic data validation out of the box. The automatic interactive documentation (Swagger UI) is an absolute game-changer.
The Project
I built a simple API to serve my resume data. It allowed me to learn about:
- Routing: Organizing endpoints cleanly.
- Pydantic Models: Validating request and response bodies.
- Dependency Injection: Handling database connections and authentication simply and elegantly.
By learning through a real project, I faced actual challenges—like handling CORS and structuring my project—that a simple "Hello World" tutorial wouldn't have taught me. FastAPI is now my go-to framework for Python backends.