```Python hl_lines="17"
{!../../../docs_src/path_params/tutorial005.py!}
```

#### Récupérer la *valeur de l'énumération*

Vous pouvez obtenir la valeur réel d'un membre (une chaîne de caractères ici), avec `model_name.value`, ou en général, `votre_membre_d'enum.value` :

```Python hl_lines="20"
{!../../../docs_src/path_params/tutorial005.py!}
```

=== "Python 3.10+"

    ```Python hl_lines="7  48  55-56  59-60  69-75"
    {!> ../../../docs_src/security/tutorial004_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="7  48  55-56  59-60  69-75"
    {!> ../../../docs_src/security/tutorial004_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="7  49  56-57  60-61  70-76"

=== "Python 3.10+"

    ```Python hl_lines="22-27"
    {!> ../../../docs_src/schema_extra_example/tutorial003_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="22-27"
    {!> ../../../docs_src/schema_extra_example/tutorial003_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="23-28"
    {!> ../../../docs_src/schema_extra_example/tutorial003_an.py!}
    ```

    {!> ../../../docs_src/security/tutorial002_py310.py!}
    ```

## 현재 유저 주입하기

이제 *경로 작동*에서 `get_current_user`와 동일한 `Depends`를 사용할 수 있습니다.

=== "파이썬 3.7 이상"

    ```Python hl_lines="31"
    {!> ../../../docs_src/security/tutorial002.py!}
    ```

=== "파이썬 3.10 이상"

    ```Python hl_lines="29"
    {!> ../../../docs_src/security/tutorial002_py310.py!}
    ```

=== "Python 3.10+"

    ```Python hl_lines="8-9"
    {!> ../../../docs_src/dependencies/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="8-11"
    {!> ../../../docs_src/dependencies/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="9-12"
    {!> ../../../docs_src/dependencies/tutorial001_an.py!}
    ```

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

Это обычная Python функция.

**FastAPI** будет вызывать её каждый раз при получении `GET` запроса к URL "`/`".

В данном случае это асинхронная функция.

---

Вы также можете определить ее как обычную функцию вместо `async def`:

```Python hl_lines="7"
{!../../../docs_src/first_steps/tutorial003.py!}

```Python hl_lines="1"
{!../../../docs_src/python_types/tutorial003.py!}
```

Editör değişkenlerin tiplerini bildiğinden, yalnızca otomatik tamamlama değil, hata kontrolleri de sağlar:

<img src="/img/python-types/image04.png">

Artık `age` değişkenini `str(age)` olarak kullanmanız gerektiğini biliyorsunuz:

```Python hl_lines="2"
{!../../../docs_src/python_types/tutorial004.py!}

    * Es enthält den gesendeten `username` und das gesendete `password`.

=== "Python 3.9+"

    ```Python hl_lines="4  8  12"
    {!> ../../../docs_src/security/tutorial006_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="2  7  11"
    {!> ../../../docs_src/security/tutorial006_an.py!}
    ```

=== "Python 3.8+ nicht annotiert"

    !!! tip "Tipp"

    E.g. `pip install python-multipart`.

## Import `File` and `Form`

=== "Python 3.9+"

    ```Python hl_lines="3"
    {!> ../../../docs_src/request_forms_and_files/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

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

=== "Python 3.8+ non-Annotated"

    !!! tip

# 查询参数和字符串校验

**FastAPI** 允许你为参数声明额外的信息和校验。

让我们以下面的应用程序为例：

=== "Python 3.10+"

    ```Python hl_lines="7"
    {!> ../../../docs_src/query_params_str_validations/tutorial001_py310.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="9"
    {!> ../../../docs_src/query_params_str_validations/tutorial001.py!}
    ```

查询参数 `q` 的类型为 `str`，默认值为 `None`，因此它是可选的。

## 额外的校验