"paths": {
            "/items/{item_id}": {
                "put": {
                    "summary": "Update Item",
                    "operationId": "update_item_items__item_id__put",
                    "parameters": [
                        {
                            "required": True,
                            "schema": {"title": "Item Id", "type": "integer"},

            },
            "/items/{item_id}": {
                "get": {
                    "tags": ["items"],
                    "summary": "Read Item",
                    "operationId": "read_item_items__item_id__get",
                    "parameters": [
                        {
                            "required": True,
                            "schema": {"title": "Item Id", "type": "string"},

尽可能选择使用 `Annotated` 的版本。

///

```Python hl_lines="3"
{!> ../../docs_src/path_params_numeric_validations/tutorial001.py!}
```

////

## 声明元数据

你可以声明与 `Query` 相同的所有参数。

例如，要声明路径参数 `item_id`的 `title` 元数据值，你可以输入：

//// tab | Python 3.10+

```Python hl_lines="10"
{!> ../../docs_src/path_params_numeric_validations/tutorial001_an_py310.py!}
```

////

//// tab | Python 3.9+

하지만 모델의 필드가 기본값이 있어도 ID가 `bar`인 항목(items)처럼 데이터가 값을 갖는다면:

```Python hl_lines="3  5"
{
    "name": "Bar",
    "description": "The bartenders",
    "price": 62,
    "tax": 20.2
}
```

응답에 해당 값들이 포함됩니다.

#### 기본값과 동일한 값을 갖는 데이터

If the data has the same values as the default ones, like the item with ID `baz`:
ID가 `baz`인 항목(items)처럼 기본값과 동일한 값을 갖는다면:

```Python hl_lines="3  5-6"

if [ -n "$TEST_DEBUG" ]; then
	set -x
fi

trap 'catch $LINENO' ERR

# shellcheck disable=SC2120
catch() {
	if [ $# -ne 0 ]; then
		echo "error on line $1"
		echo "server logs ========="
		cat "/tmp/sitea_1.log"
		echo "==========================="
		cat "/tmp/sitea_2.log"
	fi

	echo "Cleaning up instances of MinIO"
	pkill minio
	pkill -9 minio
	rm -rf /tmp/multisitea
	if [ $# -ne 0 ]; then
		exit $#
	fi

///

## Déclarer des métadonnées

Vous pouvez déclarer les mêmes paramètres que pour `Query`.

Par exemple, pour déclarer une valeur de métadonnée `title` pour le paramètre de chemin `item_id`, vous pouvez écrire :

{* ../../docs_src/path_params_numeric_validations/tutorial001_an_py310.py hl[10] *}

/// note

```Python hl_lines="6 7"
{!../../docs_src/path_params/tutorial001.py!}
```

パスパラメータ `item_id` の値は、引数 `item_id` として関数に渡されます。

しがたって、この例を実行して <a href="http://127.0.0.1:8000/items/foo" class="external-link" target="_blank">http://127.0.0.1:8000/items/foo</a> にアクセスすると、次のレスポンスが表示されます。

```JSON
{"item_id":"foo"}
```

## パスパラメータと型

標準のPythonの型アノテーションを使用して、関数内のパスパラメータの型を宣言できます:

```Python hl_lines="7"

        "paths": {
            "/items/{item_id}": {
                "put": {
                    "summary": "Update Item",
                    "operationId": "update_item_items__item_id__put",
                    "parameters": [
                        {
                            "required": True,
                            "schema": {"title": "Item Id", "type": "integer"},

```

### 📉 📨

🚥 👩‍💻 📨 `http://example.com/items/foo` ( `item_id` `"foo"`), 👈 👩‍💻 🔜 📨 🇺🇸🔍 👔 📟 2️⃣0️⃣0️⃣, & 🎻 📨:

```JSON
{
  "item": "The Foo Wrestlers"
}
```

✋️ 🚥 👩‍💻 📨 `http://example.com/items/bar` (🚫-🚫 `item_id` `"bar"`), 👈 👩‍💻 🔜 📨 🇺🇸🔍 👔 📟 4️⃣0️⃣4️⃣ ("🚫 🔎" ❌), & 🎻 📨:

```JSON
{
  "detail": "Item not found"
}
```

/// tip

def test_get_item():
    response = client.get("/items/foo")
    assert response.status_code == 200, response.text
    assert response.json() == {"item": "The Foo Wrestlers"}


def test_get_item_not_found():
    response = client.get("/items/bar")
    assert response.status_code == 404, response.text
    assert response.headers.get("x-error") is None
    assert response.json() == {"detail": "Item not found"}


def test_openapi_schema():