foo...

foo...

foo...

{!../../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"
{!../../docs_src/path_params/tutorial002.py!}
```

from fastapi import FastAPI

app = FastAPI()


@app.get("/items/", include_in_schema=False)
async def read_items():

text=foo...

{
	"foo": {
		"bar": "baz"
	}

    val requestWithoutCache = Request.Builder().url("http://localhost/api").build()
    val builtRequestWithoutCache = requestWithoutCache.newBuilder().url("http://localhost/api/foo").build()
    assertThat(builtRequestWithoutCache.url).isEqualTo(
      "http://localhost/api/foo".toHttpUrl(),
    )
    val requestWithCache =
      Request.Builder()
        .url("http://localhost/api")
        .build()
    // cache url object

 *
 * <p>For example, an XML escaper would convert the literal string {@code "Foo<Bar>"} into {@code
 * "Foo&lt;Bar&gt;"} to prevent {@code "<Bar>"} from being confused with an XML tag. When the
 * resulting XML document is parsed, the parser API will return this text as the original literal
 * string {@code "Foo<Bar>"}.
 *
 * <p>A {@code CharEscaper} instance is required to be stateless, and safe when used concurrently by

    Funnel<Iterable<?>> sequential = Funnels.sequentialFunnel(elementFunnel);
    sequential.funnel(Arrays.asList("foo", "bar", "baz", "quux"), primitiveSink);
    InOrder inOrder = inOrder(elementFunnel);
    inOrder.verify(elementFunnel).funnel("foo", primitiveSink);
    inOrder.verify(elementFunnel).funnel("bar", primitiveSink);
    inOrder.verify(elementFunnel).funnel("baz", primitiveSink);