=== "Python 3.10+"

    ```Python hl_lines="7"
    {!> ../../../docs_src/query_params/tutorial002_py310.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="9"
    {!> ../../../docs_src/query_params/tutorial002.py!}
    ```

Bu durumda, `q` fonksiyon parametresi isteğe bağlı olacak ve varsayılan değer olarak `None` alacaktır.

!!! check "Ek bilgi"

    ```Python hl_lines="1  3"
    {!> ../../../docs_src/path_params_numeric_validations/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="1  3"
    {!> ../../../docs_src/path_params_numeric_validations/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="3-4"
    {!> ../../../docs_src/path_params_numeric_validations/tutorial001_an.py!}
    ```

    {!> ../../../docs_src/query_params/tutorial006.py!}
    ```

=== "🐍 3️⃣.1️⃣0️⃣ & 🔛"

    ```Python hl_lines="8"
    {!> ../../../docs_src/query_params/tutorial006_py310.py!}
    ```

👉 💼, 📤 3️⃣ 🔢 🔢:

* `needy`, ✔ `str`.
* `skip`, `int` ⏮️ 🔢 💲 `0`.
* `limit`, 📦 `int`.

!!! tip

```Python hl_lines="6  11"
{!../../../docs_src/path_params/tutorial003.py!}
```

Aksi halde, `/users/{user_id}` yolu `"me"` değerinin `user_id` parametresi için gönderildiğini "düşünerek" `/users/me` ile de eşleşir.

Benzer şekilde, bir yol operasyonunu yeniden tanımlamanız mümkün değildir:

```Python hl_lines="6  11"
{!../../../docs_src/path_params/tutorial003b.py!}
```

=== "Python 3.10+"

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

=== "Python 3.8+"

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

!!! note "Технические детали"
    `Cookie` - это класс, родственный `Path` и `Query`. Он также наследуется от общего класса `Param`.

```Python hl_lines="10"
{!../../../docs_src/query_params/tutorial006.py!}
```

En este caso hay 3 parámetros de query:

* `needy`, un `str` requerido.
* `skip`, un `int` con un valor por defecto de `0`.
* `limit`, un `int` opcional.

!!! tip "Consejo"

### *パスパラメータ*の宣言

次に、作成したenumクラスである`ModelName`を使用した型アノテーションをもつ*パスパラメータ*を作成します:

```Python hl_lines="16"
{!../../../docs_src/path_params/tutorial005.py!}
```

### ドキュメントの確認

*パスパラメータ*の利用可能な値が事前に定義されているので、対話的なドキュメントで適切に表示できます:

<img src="/img/tutorial/path-params/image03.png">

### Python*列挙型*の利用

*パスパラメータ*の値は*列挙型メンバ*となります。

#### *列挙型メンバ*の比較

これは、作成した列挙型 `ModelName` の*列挙型メンバ*と比較できます:

=== "Python 3.10+"

    ```Python hl_lines="3"
    {!> ../../../docs_src/header_params/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

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

=== "Python 3.8+"

    ```Python hl_lines="3"
    {!> ../../../docs_src/header_params/tutorial001_an.py!}
    ```

=== "Python 3.10+ без Annotated"

=== "Python 3.10+"

    ```Python hl_lines="3"
    {!> ../../../docs_src/header_params/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

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

=== "Python 3.8+"

    ```Python hl_lines="3"
    {!> ../../../docs_src/header_params/tutorial001_an.py!}
    ```

=== "Python 3.10+ non-Annotated"

    !!! tip

=== "Python 3.10+"

    ```Python hl_lines="3"
    {!> ../../../docs_src/cookie_params/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

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

=== "Python 3.8+"

    ```Python hl_lines="3"
    {!> ../../../docs_src/cookie_params/tutorial001_an.py!}
    ```

=== "Python 3.10+ non-Annotated"

    !!! tip