Par exemple, en étendant le modèle précédent, vous pouvez vouloir ajouter un paramètre `importance` dans le même body, en plus des paramètres `item` et `user`.

Si vous le déclarez tel quel, comme c'est une valeur [scalaire](https://docs.github.com/fr/graphql/reference/scalars), **FastAPI** supposera qu'il s'agit d'un paramètre de requête (`Query`).

from fastapi import FastAPI
from fastapi.responses import ORJSONResponse
from fastapi.testclient import TestClient
from sqlalchemy.sql.elements import quoted_name

app = FastAPI(default_response_class=ORJSONResponse)


@app.get("/orjson_non_str_keys")
def get_orjson_non_str_keys():
    key = quoted_name(value="msg", quote=False)
    return {key: "Hello World", 1: 1}


client = TestClient(app)


def test_orjson_non_str_keys():

from fastapi import Depends, FastAPI, Security
from fastapi.security import SecurityScopes
from fastapi.testclient import TestClient

app = FastAPI()


def get_user(required_scopes: SecurityScopes):
    return "john", required_scopes.scopes


def get_user_override(required_scopes: SecurityScopes):
    return "alice", required_scopes.scopes


def get_data():
    return [1, 2, 3]


def get_data_override():

```

Но FastAPI (точнее, Starlette) предоставляет более простой способ, который гарантирует корректную обработку внутренних ошибок сервера и корректную работу пользовательских обработчиков исключений.

Для этого используйте `app.add_middleware()` (как в примере с CORS).

```Python
from fastapi import FastAPI
from unicorn import UnicornMiddleware

app = FastAPI()

from fastapi import Depends, FastAPI, Security
from fastapi.security import APIKeyQuery
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()

api_key = APIKeyQuery(name="key")


class User(BaseModel):
    username: str


def get_current_user(oauth_header: str = Security(api_key)):
    user = User(username=oauth_header)
    return user


@app.get("/users/me")

    in another `APIRouter` (ultimately included in the app).

    Read more about it in the
    [FastAPI docs for Bigger Applications - Multiple Files](https://fastapi.tiangolo.com/tutorial/bigger-applications/).

    ## Example

    ```python
    from fastapi import APIRouter, FastAPI

    app = FastAPI()
    router = APIRouter()

그럼에도, **FastAPI**는 표준 Open API를 사용해 이미 호환이 가능합니다.

따라서 Swagger UI 또는 기타 그 외의 OpenAPI를 지원하는 툴이 다중 파일 업로드를 지원하는 경우, 이들은 **FastAPI**와 호환됩니다.

///

/// note | 기술적 세부사항

`from starlette.responses import HTMLResponse` 역시 사용할  수 있습니다.

**FastAPI**는 개발자의 편의를 위해 `fastapi.responses` 와 동일한 `starlette.responses` 도 제공합니다. 하지만 대부분의 응답들은 Starlette로부터 직접 제공됩니다.

![ReDoc](https://fastapi.tiangolo.com/img/index/index-02-redoc-simple.png)

## Собрать Docker-образ для однофайлового FastAPI { #build-a-docker-image-with-a-single-file-fastapi }

Если ваше приложение FastAPI — один файл, например `main.py` без директории `./app`, структура файлов может быть такой:

```
.
├── Dockerfile

# Sub Aplicaciones - Mounts { #sub-applications-mounts }

Si necesitas tener dos aplicaciones de **FastAPI** independientes, cada una con su propio OpenAPI independiente y su propia interfaz de docs, puedes tener una aplicación principal y "montar" una (o más) sub-aplicación(es).

## Montar una aplicación **FastAPI** { #mounting-a-fastapi-application }

# Sub Aplicações - Montagens { #sub-applications-mounts }

Se você precisar ter duas aplicações FastAPI independentes, cada uma com seu próprio OpenAPI e suas próprias interfaces de documentação, você pode ter um aplicativo principal e "montar" uma (ou mais) sub-aplicações.

## Montando uma aplicação **FastAPI** { #mounting-a-fastapi-application }