These functions are there (instead of just using the classes directly) so that your editor doesn't mark errors about their types.

In some occasions it might be useful to provide the settings from a dependency, instead of having a global object with `settings` that is used everywhere.

This could be especially useful during testing, as it's very easy to override a dependency with your own custom settings.

### The config file

Coming from the previous example, your `config.py` file could look like:

```Python hl_lines="10"

    * Ficar por dentro de novas ideias, artigos, e ferramentas criadas por mim.
    * Me siga para saber quando eu publicar algo novo.

## Tweete sobre **FastAPI**

<a href="https://twitter.com/compose/tweet?text=I'm loving @fastapi because... https://github.com/tiangolo/fastapi" class="external-link" target="_blank">Tweete sobre o **FastAPI**</a> e compartilhe comigo e com os outros o porque de gostar do FastAPI. 🎉

The same way, you can define logic (code) that should be executed when the application is **shutting down**. In this case, this code will be executed **once**, **after** having handled possibly **many requests**.

---

"_We adopted the **FastAPI** library to spawn a **REST** server that can be queried to obtain **predictions**. [for Ludwig]_"

<div style="text-align: right; margin-right: 10%;">Piero Molino, Yaroslav Dudin, and Sai Sumanth Miryala - <strong>Uber</strong> <a href="https://eng.uber.com/ludwig-v0-2/" target="_blank"><small>(ref)</small></a></div>

---

For example:

* 200: `status.HTTP_200_OK`
* 403: `status.HTTP_403_FORBIDDEN`
* etc.

It can be convenient to quickly access HTTP (and WebSocket) status codes in your app, using autocompletion for the name without having to remember the integer status codes by memory.

Read more about it in the [FastAPI docs about Response Status Code](https://fastapi.tiangolo.com/tutorial/response-status-code/).

## Example

```python

**FastAPI** provides several tools to help you deal with **Security** easily, rapidly, in a standard way, without having to study and learn all the security specifications.

But first, let's check some small concepts.

## In a hurry?

    - 다른 기사나 아이디어들을 읽고, 제가 만들어왔던 툴에 대해서도 읽으십시오.
    - 새로운 기사를 읽기 위해 팔로우 하십시오.

  ## **FastAPI**에 대한 트윗

  [**FastAPI**에 대해 트윗](https://twitter.com/compose/tweet?text=I'm loving @fastapi because... https://github.com/tiangolo/fastapi) 하고 FastAPI가 마음에 드는 이유를 알려주세요. 🎉

  **FastAPI**가 어떻게 사용되고 있는지, 어떤 점이 마음에 들었는지, 어떤 프로젝트/회사에서 사용하고 있는지 등에 대해 듣고 싶습니다.

  ## FastAPI에 투표하기

And as the code related to SQLAlchemy and the SQLAlchemy models lives in separate independent files, you would even be able to perform the migrations with Alembic without having to install FastAPI, Pydantic, or anything else.

The same way, you would be able to use the same SQLAlchemy models and utilities in other parts of your code that are not related to **FastAPI**.

    * Подпишитесь на меня, чтобы прочитать, когда я опубликую что-нибудь новое.

## Оставить сообщение в Twitter о **FastAPI**

<a href="https://twitter.com/compose/tweet?text=I'm loving @fastapi because... https://github.com/tiangolo/fastapi" class="external-link" target="_blank">Оставьте сообщение в Twitter о **FastAPI**</a> и позвольте мне и другим узнать - почему он Вам нравится. 🎉