* **de la vérification de types**

...et **FastAPI** utilise ces mêmes déclarations pour :

* **Définir les prérequis** : depuis les paramètres de chemins des requêtes, les entêtes, les corps, les dépendances, etc.
* **Convertir des données** : depuis la requête vers les types requis.
* **Valider des données** : venant de chaque requête :
    * Générant automatiquement des **erreurs** renvoyées au client quand la donnée est invalide.

    }

    internal constructor(request: Request) {
      this.url = request.url
      this.method = request.method
      this.body = request.body
      this.tags =
        when {
          request.tags.isEmpty() -> mapOf()
          else -> request.tags.toMutableMap()
        }
      this.headers = request.headers.newBuilder()
      this.cacheUrlOverride = request.cacheUrlOverride
    }

    {!> ../../../docs_src/request_forms/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="1"
    {!> ../../../docs_src/request_forms/tutorial001_an.py!}
    ```

=== "Python 3.8+ non-Annotated"

    !!! tip
        Prefer to use the `Annotated` version if possible.

    ```Python hl_lines="1"
    {!> ../../../docs_src/request_forms/tutorial001.py!}
    ```

# `Request` class

You can declare a parameter in a *path operation function* or dependency to be of type `Request` and then you can access the raw request object directly, without any validation, etc.

You can import it directly from `fastapi`:

```python
from fastapi import Request
```

!!! tip

	EnvRedisEnable     = "MINIO_NOTIFY_REDIS_ENABLE"
	EnvRedisFormat     = "MINIO_NOTIFY_REDIS_FORMAT"
	EnvRedisAddress    = "MINIO_NOTIFY_REDIS_ADDRESS"
	EnvRedisPassword   = "MINIO_NOTIFY_REDIS_PASSWORD"
	EnvRedisUser       = "MINIO_NOTIFY_REDIS_USER"
	EnvRedisKey        = "MINIO_NOTIFY_REDIS_KEY"
	EnvRedisQueueDir   = "MINIO_NOTIFY_REDIS_QUEUE_DIR"
	EnvRedisQueueLimit = "MINIO_NOTIFY_REDIS_QUEUE_LIMIT"
)

    {!> ../../../docs_src/request_files/tutorial001.py!}
    ```

## Определите параметры `File`

Создайте параметры `File` так же, как вы это делаете для `Body` или `Form`:

=== "Python 3.9+"

    ```Python hl_lines="9"
    {!> ../../../docs_src/request_files/tutorial001_an_py39.py!}
    ```

=== "Python 3.6+"

    ```Python hl_lines="8"
    {!> ../../../docs_src/request_files/tutorial001_an.py!}
    ```

    {!> ../../../docs_src/request_files/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="1"
    {!> ../../../docs_src/request_files/tutorial001_an.py!}
    ```

=== "Python 3.8+ non-Annotated"

    !!! tip
        Prefer to use the `Annotated` version if possible.

    ```Python hl_lines="1"
    {!> ../../../docs_src/request_files/tutorial001.py!}
    ```

    ```Python hl_lines="7  14"
    {!> ../../../docs_src/request_files/tutorial001_02_py310.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="9  17"
    {!> ../../../docs_src/request_files/tutorial001_02.py!}
    ```

## 带有额外元数据的 `UploadFile`

您也可以将 `File()` 与 `UploadFile` 一起使用，例如，设置额外的元数据:

```Python hl_lines="13"
{!../../../docs_src/request_files/tutorial001_03.py!}
```

## 多文件上传

    {!> ../../../docs_src/request_forms/tutorial001.py!}
    ```

## `Form`-Parameter definieren

Erstellen Sie Formular-Parameter, so wie Sie es auch mit `Body` und `Query` machen würden:

=== "Python 3.9+"

    ```Python hl_lines="9"
    {!> ../../../docs_src/request_forms/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="8"
    {!> ../../../docs_src/request_forms/tutorial001_an.py!}

    例如，`pip install python-multipart`。

## 导入 `Form`

从 `fastapi` 导入 `Form`：

```Python hl_lines="1"
{!../../../docs_src/request_forms/tutorial001.py!}
```

## 定义 `Form` 参数

创建表单（`Form`）参数的方式与 `Body` 和 `Query` 一样：

```Python hl_lines="7"
{!../../../docs_src/request_forms/tutorial001.py!}
```

例如，OAuth2 规范的 "密码流" 模式规定要通过表单字段发送 `username` 和 `password`。