* <abbr title="також відомий як: serialization, parsing, marshalling">Перетворення</abbr> вхідних даних: з мережі до даних і типів Python. Читання з:
    * JSON.
    * Параметрів шляху.
    * Параметрів запиту.
    * Cookies.
    * Headers.
    * Forms.
    * Файлів.
* <abbr title="також відомий як: serialization, parsing, marshalling">Перетворення</abbr> вихідних даних: з типів і даних Python до мережевих даних (як JSON):

      labels:
        version: v1
    - name: v2
      labels:
        version: v2
      trafficPolicy:
        loadBalancer:
          consistentHash:
            httpCookie:
              name: Cookie
              ttl: 30s
            minimumRingSize: 42

	for i := 0; i < len(data); i++ {
		data[i] = 'x'
	}
	sdata := string(data)
	r := reader("Cookie: " + sdata + "\r\n\n")
	m, err := r.ReadMIMEHeader()
	if err != nil {
		t.Fatalf("ReadMIMEHeader: %v", err)
	}
	cookie := m.Get("Cookie")
	if cookie != sdata {
		t.Fatalf("ReadMIMEHeader: %v bytes, want %v bytes", len(cookie), len(sdata))
	}
}

// TestReadMIMEHeaderNonCompliant checks that we don't normalize headers

// Functions to access/create device major and minor numbers matching the
// encoding used in FreeBSD's sys/types.h header.
//
// The information below is extracted and adapted from sys/types.h:
//
// Minor gives a cookie instead of an index since in order to avoid changing the
// meanings of bits 0-15 or wasting time and space shifting bits 16-31 for
// devices that don't use them.

package unix

 * limitations under the License.
 */
@file:Suppress("INVISIBLE_MEMBER", "INVISIBLE_REFERENCE")

package okhttp3

import java.net.CookieHandler

/**
 * A cookie jar that delegates to a [java.net.CookieHandler].
 *
 * This implementation delegates everything to [okhttp3.java.net.cookiejar.JavaNetCookieJar], which
 * conforms to the package-naming limitations of JPMS.
 *

		g.Expect(len(routes)).To(Equal(1))

		hashPolicy := &envoyroute.RouteAction_HashPolicy{
			PolicySpecifier: &envoyroute.RouteAction_HashPolicy_Cookie_{
				Cookie: &envoyroute.RouteAction_HashPolicy_Cookie{
					Name: "hash-cookie",
					Ttl:  &ttl,
				},
			},
		}
		g.Expect(routes[0].GetRoute().GetHashPolicy()).To(ConsistOf(hashPolicy))

	// cookie, and clients must abort the handshake if the HRR would not result
	// in any change in the ClientHello.
	if hs.serverHello.selectedGroup == 0 && hs.serverHello.cookie == nil {
		c.sendAlert(alertIllegalParameter)
		return errors.New("tls: server sent an unnecessary HelloRetryRequest message")
	}

	if hs.serverHello.cookie != nil {
		hello.cookie = hs.serverHello.cookie
	}

    * JSON.
    * Pfad-Parametern.
    * Abfrage-Parametern.
    * Cookies.
    * Header-Feldern.
    * Formularen.
    * Dateien.

    * JSON.
    * Path parameters.
    * Query parameters.
    * Cookies.
    * Headers.
    * Form.
    * File.
* <abbr title="detta anche: serialization, parsing, marshalling">Conversione</abbr> dei dati di output: converte dati e tipi di Python a dati per la rete (come JSON):

{!../../../docs_src/dependencies/tutorial005.py!}
```

这里重点说明一下声明的参数：

* 尽管该函数自身是依赖项，但还声明了另一个依赖项（它「依赖」于其他对象）
    * 该函数依赖 `query_extractor`, 并把 `query_extractor` 的返回值赋给参数 `q`
* 同时，该函数还声明了类型是 `str` 的可选 cookie（`last_query`）
    * 用户未提供查询参数 `q` 时，则使用上次使用后保存在 cookie 中的查询

### 使用依赖项

接下来，就可以使用依赖项：

```Python hl_lines="22"
{!../../../docs_src/dependencies/tutorial005.py!}
```

!!! info "信息"