"normal": {
                    "summary": "A normal example",
                    "description": "A **normal** item works correctly.",
                    "value": {
                        "name": "Foo",
                        "description": "A very nice Item",
                        "price": 35.4,
                        "tax": 3.2,
                    },
                },
                "converted": {

    return client


@needs_py39
def test_get_items(client: TestClient):
    response = client.get("/keyword-weights/")
    assert response.status_code == 200, response.text
    assert response.json() == {"foo": 2.3, "bar": 3.4}


@needs_py39
def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {

    client =
      client.newBuilder()
        .cookieJar(JavaNetCookieJar(cookieManager))
        .build()
    val urlWithIpAddress = urlWithIpAddress(server, "/path/foo")
    server.enqueue(
      MockResponse.Builder()
        .addHeader(
          "Set-Cookie: a=android; " +
            "expires=Fri, 31-Dec-9999 23:59:59 GMT; " +
            "path=/path; " +

KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
-->

<project>
  <modelVersion>99.0.0</modelVersion>
  <groupId>foo</groupId>
  <artifactId>bar</artifactId>
  <version>0.1</version>

KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
-->

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>foo</groupId>
  <artifactId>bar</artifactId>
  <version>this\is/bad</version>

KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
-->

<project>
  <modelVersion>4.0</modelVersion>
  <groupId>foo</groupId>
  <artifactId>bar</artifactId>
  <version>0.1</version>

def get_client():
    from docs_src.dependencies.tutorial008c_an import app

    client = TestClient(app)
    return client


def test_get_no_item(client: TestClient):
    response = client.get("/items/foo")
    assert response.status_code == 404, response.text
    assert response.json() == {"detail": "Item not found, there's only a plumbus here"}


def test_get(client: TestClient):
    response = client.get("/items/plumbus")

        openapi_examples={
            "normal": {
                "summary": "A normal example",
                "description": "A **normal** item works correctly.",
                "value": {
                    "name": "Foo",
                    "description": "A very nice Item",
                    "price": 35.4,
                    "tax": 3.2,
                },
            },
            "converted": {

def test_events(app: FastAPI):
    with TestClient(app) as client:
        response = client.get("/items/")
        assert response.status_code == 200, response.text
        assert response.json() == [{"name": "Foo"}]
    with open("log.txt") as log:
        assert "Application shutdown" in log.read()


def test_openapi_schema(app: FastAPI):
    with TestClient(app) as client:
        response = client.get("/openapi.json")

```Python hl_lines="9"
{!> ../../docs_src/header_params/tutorial003.py!}
```

////

与*路径操作*通信时，以下面的方式发送两个 HTTP 请求头：

```
X-Token: foo
X-Token: bar
```

响应结果是：

```JSON
{
    "X-Token values": [
        "bar",
        "foo"
    ]
}
```

## 小结

使用 `Header` 声明请求头的方式与 `Query`、`Path` 、`Cookie` 相同。