You can also return Pydantic models (you'll see more about that later).

There are many other objects and models that will be automatically converted to JSON (including ORMs, etc). Try using your favorite ones, it's highly probable that they are already supported.

## Recap

* Import `FastAPI`.
* Create an `app` instance.
* Write a **path operation decorator** (like `@app.get("/")`).

This solved having to write YAML (another syntax) inside of Python docstrings.

This combination of Flask, Flask-apispec with Marshmallow and Webargs was my favorite backend stack until building **FastAPI**.

Using it led to the creation of several Flask full-stack generators. These are the main stacks I (and several external teams) have been using up to now:

* Truques e dicas ✅

## Siga o FastAPI no twitter

<a href="https://twitter.com/fastapi" class="external-link" target="_blank">Siga @fastapi no **Twitter**</a> para receber as últimas notícias sobre o **FastAPI**. 🐦

## Favorite o **FastAPI** no GitHub