Если необходимо выполнить частичное обновление, то очень полезно использовать параметр `exclude_unset` в методе `.model_dump()` модели Pydantic.

Например, `item.model_dump(exclude_unset=True)`.

/// info | Информация

В Pydantic v1 метод назывался `.dict()`, в Pydantic v2 он помечен как устаревший (но все еще поддерживается) и переименован в `.model_dump()`.

def test_openapi():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/": {
                "get": {
                    "responses": {
                        "200": {

        version="2.5.0",
        summary="This is a very custom OpenAPI schema",
        description="Here's a longer description of the custom **OpenAPI** schema",
        routes=app.routes,
    )
    openapi_schema["info"]["x-logo"] = {
        "url": "https://fastapi.tiangolo.com/img/logo-margin/logo-teal.png"
    }
    app.openapi_schema = openapi_schema
    return app.openapi_schema

plugins {
  id("java")
  id("application")
  id("com.github.iherasymenko.jlink") version "0.7"
  id("org.gradlex.extra-java-module-info") version "1.13.1"
}

dependencies {
  implementation(projects.okhttp)
  implementation(projects.loggingInterceptor)

  testImplementation(projects.okhttp)
  testImplementation(projects.loggingInterceptor)
  testImplementation(projects.mockwebserver3)
  testImplementation(projects.mockwebserver3Junit5)

{* ../../docs_src/cookie_params/tutorial001_an_py310.py hl[9] *}

/// note | 技术细节

`Cookie` 、`Path` 、`Query` 是**兄弟类**，都继承自共用的 `Param` 类。

注意，从 `fastapi` 导入的 `Query`、`Path`、`Cookie` 等对象，实际上是返回特殊类的函数。

///

/// info | 说明

必须使用 `Cookie` 声明 cookie 参数，否则该参数会被解释为查询参数。

///

## 小结

def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {
            "title": "ChimichangApp",
            "summary": "Deadpool's favorite app. Nuff said.",

def test_openapi():
    response = client.get("/openapi.json")
    assert response.status_code == 200
    assert response.json() == {
        "info": {
            "title": "FastAPI",
            "version": "0.1.0",
        },
        "openapi": "3.1.0",
        "paths": {
            "/items/{item_id}": {
                "get": {

バイナリやテキストデータ、JSONデータを送受信できます。

## 試してみる

ファイル名が `main.py` である場合、以下の方法でアプリケーションを実行します。

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

ブラウザで <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a> を開きます。

/**
 * Slf4jConfiguration factory, loading implementations from <code>META-INF/maven/slf4j-configuration.properties</code>
 * configuration files in class loader: key is the class name of the ILoggerFactory, value is the class name of
 * the corresponding Slf4jConfiguration.
 *
 * @since 3.1.0
 */
public class Slf4jConfigurationFactory {
    public static final String RESOURCE = "META-INF/maven/slf4j-configuration.properties";

		[switch_is(level)] DfsEnumInfo e;
	} DfsEnumStruct;

	[op(0x15)]
	int NetrDfsEnumEx([in,string,unique] wchar_t dfs_name,
			[in] uint32_t level,
			[in] uint32_t prefmaxlen,
			[in,out,unique] DfsEnumStruct *info,
			[in,out,unique] uint32_t *totalentries);