`FastAPI` là một class kế thừa trực tiếp `Starlette`.

Bạn cũng có thể sử dụng tất cả <a href="https://www.starlette.io/" class="external-link" target="_blank">Starlette</a> chức năng với `FastAPI`.

///

### Bước 2: Tạo một `FastAPI` "instance"

```Python hl_lines="3"
{!../../docs_src/first_steps/tutorial001.py!}
```

Biến `app` này là một "instance" của class `FastAPI`.

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