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  2. github.com/tiangolo/fastapi

    fastapi/background.py 

    from starlette.background import BackgroundTasks as StarletteBackgroundTasks
from typing_extensions import Annotated, Doc, ParamSpec

P = ParamSpec("P")


class BackgroundTasks(StarletteBackgroundTasks):
    """
    A collection of background tasks that will be called after a response has been
    sent to the client.

    Read more about it in the
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  3. github.com/tiangolo/fastapi

    docs/en/docs/reference/background.md 

    # Background Tasks - `BackgroundTasks`

You can declare a parameter in a *path operation function* or dependency function with the type `BackgroundTasks`, and then you can use it to schedule the execution of background tasks after the response is sent.

You can import it directly from `fastapi`:

```python
from fastapi import BackgroundTasks
```
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  4. github.com/golang/go

    misc/chrome/gophertool/background.html 

    <html>
<!--
 Copyright 2011 The Go Authors. All rights reserved.
 Use of this source code is governed by a BSD-style
 license that can be found in the LICENSE file.
-->
<head>
<script src="gopher.js"></script>
<script src="background.js"></script>
</head>
    Registered: Tue Nov 05 11:13:11 UTC 2024
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  5. github.com/tiangolo/fastapi

    docs/en/docs/tutorial/background-tasks.md 

    {* ../../docs_src/background_tasks/tutorial001.py hl[6:9] *}

## Add the background task

Inside of your *path operation function*, pass your task function to the *background tasks* object with the method `.add_task()`:

{* ../../docs_src/background_tasks/tutorial001.py hl[14] *}

`.add_task()` receives as arguments:

* A task function to be run in the background (`write_notification`).
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  6. github.com/golang/go

    misc/chrome/gophertool/background.js 

    ramenjuniti <******@****.***> 1574074702 +0900
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  7. github.com/tiangolo/fastapi

    docs/pt/docs/tutorial/background-tasks.md 

    A classe `BackgroundTasks` vem diretamente de <a href="https://www.starlette.io/background/" class="external-link" target="_blank">`starlette.background`</a>.

Ela é importada/incluída diretamente no FastAPI para que você possa importá-la do `fastapi` e evitar a importação acidental da alternativa `BackgroundTask` (sem o `s` no final) de `starlette.background`.
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  8. github.com/tiangolo/fastapi

    docs/de/docs/tutorial/background-tasks.md 

    Die Klasse `BackgroundTasks` stammt direkt von <a href="https://www.starlette.io/background/" class="external-link" target="_blank">`starlette.background`</a>.

Sie wird direkt in FastAPI importiert/inkludiert, sodass Sie sie von `fastapi` importieren können und vermeiden, versehentlich das alternative `BackgroundTask` (ohne das `s` am Ende) von `starlette.background` zu importieren.
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  9. github.com/tiangolo/fastapi

    docs/zh/docs/tutorial/background-tasks.md 

    如果请求中有查询，它将在后台任务中写入日志。

然后另一个在 *路径操作函数* 生成的后台任务会使用路径参数 `email` 写入一条信息。

## 技术细节

`BackgroundTasks` 类直接来自 <a href="https://www.starlette.io/background/" class="external-link" target="_blank">`starlette.background`</a>。

它被直接导入/包含到FastAPI以便你可以从 `fastapi` 导入，并避免意外从 `starlette.background` 导入备用的 `BackgroundTask` (后面没有 `s`)。

通过仅使用 `BackgroundTasks` (而不是 `BackgroundTask`)，使得能将它作为 *路径操作函数* 的参数 ，并让**FastAPI**为您处理其余部分, 就像直接使用 `Request` 对象。
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  10. github.com/tiangolo/fastapi

    docs/fr/docs/tutorial/background-tasks.md 

    La classe `BackgroundTasks` provient directement de <a href="https://www.starlette.io/background/" class="external-link" target="_blank">`starlette.background`</a>.

Elle est importée/incluse directement dans **FastAPI** pour que vous puissiez l'importer depuis `fastapi` et éviter d'importer accidentellement `BackgroundTask` (sans `s` à la fin) depuis `starlette.background`.
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  11. github.com/tiangolo/fastapi

    docs/ja/docs/tutorial/background-tasks.md 

    そして、*path operations 関数* で生成された別のバックグラウンドタスクは、`email` パスパラメータを使用してメッセージを書き込みます。

## 技術的な詳細

`BackgroundTasks` クラスは、<a href="https://www.starlette.io/background/" class="external-link" target="_blank">`starlette.background`</a>から直接取得されます。

これは、FastAPI に直接インポート/インクルードされるため、`fastapi` からインポートできる上に、`starlette.background`から別の `BackgroundTask` (末尾に `s` がない) を誤ってインポートすることを回避できます。
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