```Python
with open("file.txt") as file:
    file.read()
```

Dans les versions récentes de Python, il existe aussi un **gestionnaire de contexte asynchrone**. Vous l'utiliseriez avec `async with` :

```Python
async with lifespan(app):
    await do_stuff()
```

///

## Nützliche Standards, alternative Dokumentation { #standards-based-benefits-alternative-documentation }

Und weil das generierte Schema vom [OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md)-Standard kommt, gibt es viele kompatible Tools.

/// info | Información

FastAPI añadió soporte para `Annotated` (y empezó a recomendarlo) en la versión 0.95.0.

Si tienes una versión más antigua, obtendrás errores al intentar usar `Annotated`.

Asegúrate de [Actualizar la versión de FastAPI](../deployment/versions.md#upgrading-the-fastapi-versions) a al menos 0.95.1 antes de usar `Annotated`.

///

        rootDir.withFile("version.txt", "9.0.0")

        return rootDir.withUniqueDirectory("input-build").apply {
            withFile(
                "gradle/libs.versions.toml",
                """
                    [libraries]
                    kotlinCompilerEmbeddable = { group = "org.jetbrains.kotlin", name = "kotlin-compiler-embeddable", version = "$embeddedKotlinVersion" }
                """

    - advanced/json-base64-bytes.md
    - advanced/strict-content-type.md
    - advanced/vibe.md
  - fastapi-cli.md
  - editor-support.md
  - Deployment:
    - deployment/index.md
    - deployment/versions.md
    - deployment/fastapicloud.md
    - deployment/https.md
    - deployment/manually.md
    - deployment/concepts.md
    - deployment/cloud.md
    - deployment/server-workers.md
    - deployment/docker.md

///

## Benefícios baseados em padrões, documentação alternativa { #standards-based-benefits-alternative-documentation }

E como o schema gerado é do padrão [OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md), existem muitas ferramentas compatíveis.

Por causa disso, o próprio **FastAPI** fornece uma documentação alternativa da API (usando ReDoc), que você pode acessar em [http://127.0.0.1:8000/redoc](http://127.0.0.1:8000/redoc):

///

## Standartlara Dayalı Avantajlar, Alternatif Dokümantasyon { #standards-based-benefits-alternative-documentation }

Üretilen şema [OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md) standardından geldiği için birçok uyumlu araç vardır.

          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "{{bucket}}",
          "refId": "A"
        }
      ],
      "title": "Versions",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${DS_PROMETHEUS}"
      },
      "fieldConfig": {
        "defaults": {

## Beneficios basados en estándares, documentación alternativa { #standards-based-benefits-alternative-documentation }

Y porque el esquema generado es del estándar [OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md), hay muchas herramientas compatibles.

///

## Переваги стандартів, альтернативна документація { #standards-based-benefits-alternative-documentation }

І оскільки згенерована схема відповідає стандарту [OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md), існує багато сумісних інструментів.