Like `stored_item_model.model_copy(update=update_data)`:

{* ../../docs_src/body_updates/tutorial002_py310.py hl[33] *}

### Partial updates recap { #partial-updates-recap }

In summary, to apply partial updates you would:

* (Optionally) use `PATCH` instead of `PUT`.
* Retrieve the stored data.
* Put that data in a Pydantic model.

@app.get("/items/{item_id}")
def read_item(item_id: int, q: str | None = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">
<summary>Ou utilisez <code>async def</code>...</summary>

Si votre code utilise `async` / `await`, utilisez `async def` :

```Python hl_lines="7  12"
from fastapi import FastAPI

app = FastAPI()


@app.get("/")

        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/model/{name}": {
                    "get": {
                        "summary": "Get Model A",
                        "operationId": "get_model_a_model__name__get",
                        "parameters": [
                            {
                                "required": True,

            "loc": ["cookie", "santa_tracker"],
            "msg": "Extra inputs are not permitted",
            "input": "good-list-please",
        }
    ]
}
```

## 总结 { #summary }

如果因某些原因需要停用這個自動轉換，你也可以在標頭參數的 Pydantic 模型上設定。

{* ../../docs_src/header_param_models/tutorial003_an_py310.py hl[19] *}

/// warning | 警告

在將 `convert_underscores` 設為 `False` 之前，請注意有些 HTTP 代理與伺服器不允許含有底線的標頭。

///

## 摘要 { #summary }

        assertNotNull(details);
        assertTrue(details.contains("Total: 1 event(s)"));
        assertTrue(details.contains("Something went wrong"));
        // Throwable is no longer included in summary-oriented format
        // Only log message is shown per event line
    }

    @Test
    public void test_formatDetails_emptyList() {

```JSON hl_lines="22"
{
    "openapi": "3.1.0",
    "info": {
        "title": "FastAPI",
        "version": "0.1.0"
    },
    "paths": {
        "/items/": {
            "get": {
                "summary": "Read Items",
                "operationId": "read_items_items__get",
                "responses": {
                    "200": {
                        "description": "Successful Response",

            "loc": ["cookie", "santa_tracker"],
            "msg": "Extra inputs are not permitted",
            "input": "good-list-please",
        }
    ]
}
```

## 요약 { #summary }

```JSON hl_lines="22"
{
    "openapi": "3.1.0",
    "info": {
        "title": "FastAPI",
        "version": "0.1.0"
    },
    "paths": {
        "/items/": {
            "get": {
                "summary": "Read Items",
                "operationId": "read_items_items__get",
                "responses": {
                    "200": {
                        "description": "Successful Response",

- `Path()`
- `Query()`
- `Header()`
- `Cookie()`
- `Body()`
- `Form()`
- `File()`

这个 `dict` 的键用于标识每个示例，每个值是另一个 `dict`。

`examples` 中每个具体示例的 `dict` 可以包含：

- `summary`：该示例的简短描述。
- `description`：较长描述，可以包含 Markdown 文本。
- `value`：实际展示的示例，例如一个 `dict`。
- `externalValue`：`value` 的替代项，指向该示例的 URL。不过它的工具支持度可能不如 `value`。

你可以这样使用：