{* ../../docs_src/security/tutorial007_an_py39.py hl[1,12:24] *}

Dies wäre das gleiche wie:

```Python
if not (credentials.username == "stanleyjobson") or not (credentials.password == "swordfish"):
    # Einen Error zurückgeben
    ...
```

For example, if the client tries to send a `santa_tracker` cookie with a value of `good-list-please`, the client will receive an **error** response telling them that the `santa_tracker` <abbr title="Santa disapproves the lack of cookies. 🎅 Okay, no more cookie jokes.">cookie is not allowed</abbr>:

```json
{

def test_swagger_ui():
    response = client.get("/docs")
    assert response.status_code == 200, response.text
    assert response.headers["content-type"] == "text/html; charset=utf-8"
    assert "swagger-ui-dist" in response.text
    print(client.base_url)
    assert "oauth2RedirectUrl" not in response.text


def test_swagger_ui_no_oauth2_redirect():
    response = client.get("/docs/oauth2-redirect")

from typing import Optional

from fastapi import FastAPI, File
from fastapi.testclient import TestClient

app = FastAPI()


@app.post("/files")
async def upload_files(files: Optional[list[bytes]] = File(None)):
    if files is None:
        return {"files_count": 0}
    return {"files_count": len(files), "sizes": [len(f) for f in files]}


def test_optional_bytes_list():
    client = TestClient(app)
    response = client.post(

<%@page pageEncoding="UTF-8" contentType="text/html; charset=UTF-8"%>
<c:if test="${crudMode == 1}">
	<button type="submit" class="btn btn-default" name="list"
		value="<la:message key="labels.crud_button_back" />">
		<i class="fa fa-arrow-circle-left" aria-hidden="true"></i>
		<la:message key="labels.crud_button_back" />
	</button>
	<c:if test="${editable}">
	<button type="submit" class="btn btn-success" name="create"

                                </la:info>
                                <la:errors/>
                            </div>
                            <%-- List --%>
                            <c:if test="${accessTokenPager.allRecordCount == 0}">
                                <div class="row">
                                    <div class="col-sm-12">

      HpackJsonUtil::class.java.getResource("/hpack-test-case")
        ?: return arrayOf()

    val testCaseDirectory = File(resource.toURI()).toOkioPath()
    val result = mutableListOf<String>()
    for (path in fileSystem.list(testCaseDirectory)) {
      val story00 = path / "story_00.json"
      if (!fileSystem.exists(story00)) continue
      try {
        readStory(story00)
        result.add(path.name)
      } catch (ignored: IOException) {

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.project.harness;

import java.util.ArrayList;
import java.util.List;

import org.apache.commons.jxpath.ri.QName;
import org.apache.commons.jxpath.ri.compiler.NodeTest;
import org.apache.commons.jxpath.ri.model.NodeIterator;
import org.apache.commons.jxpath.ri.model.NodePointer;

  <groupId>maven</groupId>
  <artifactId>p2</artifactId>
  <packaging>pom</packaging>
  <name>p2</name>
  <version>1.0</version>
  <mailingLists>
    <mailingList>
      <name>mailing-list</name>
    </mailingList>
  </mailingLists>

/// note

注意，`response_model`是「装饰器」方法（`get`，`post` 等）的一个参数。不像之前的所有参数和请求体，它不属于*路径操作函数*。

///

它接收的类型与你将为 Pydantic 模型属性所声明的类型相同，因此它可以是一个 Pydantic 模型，但也可以是一个由 Pydantic 模型组成的 `list`，例如 `List[Item]`。

FastAPI 将使用此 `response_model` 来：

* 将输出数据转换为其声明的类型。
* 校验数据。
* 在 OpenAPI 的*路径操作*中为响应添加一个 JSON Schema。
* 并在自动生成文档系统中使用。

但最重要的是：

* 会将输出数据限制在该模型定义内。下面我们会看到这一点有多重要。

/// note | 技术细节