## Caveat { #caveat }

If you need to perform heavy background computation and you don't necessarily need it to be run by the same process (for example, you don't need to share memory, variables, etc), you might benefit from using other bigger tools like [Celery](https://docs.celeryq.dev).

你可以把这些设置放在另一个模块文件中，就像你在[更大的应用 - 多个文件](../tutorial/bigger-applications.md)中看到的那样。

例如，可以有一个 `config.py` 文件：

{* ../../docs_src/settings/app01_py310/config.py *}

然后在 `main.py` 文件中使用它：

{* ../../docs_src/settings/app01_py310/main.py hl[3,11:13] *}

/// tip | 提示

你还需要一个 `__init__.py` 文件，就像你在[更大的应用 - 多个文件](../tutorial/bigger-applications.md)中看到的那样。

///

### Arquivo da aplicação **FastAPI** { #fastapi-app-file }

Digamos que você tenha uma estrutura de arquivo conforme descrito em [Aplicações maiores](bigger-applications.md):

```
.
├── app
│   ├── __init__.py
│   └── main.py
```

No arquivo `main.py` você tem sua aplicação **FastAPI**:


{* ../../docs_src/app_testing/app_a_py310/main.py *}

`TestClient` 是基于 [HTTPX](https://www.python-httpx.org) 的。幸运的是，我们可以直接使用它来测试 API。

## 示例 { #example }

举个简单的例子，让我们来看一个与[更大的应用](../tutorial/bigger-applications.md)和[测试](../tutorial/testing.md)中描述的类似文件结构：

```
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

文件 `main.py` 将包含:

[大規模アプリケーション - 複数ファイル](../tutorial/bigger-applications.md) で見たように、これらの設定を別のモジュールファイルに置くこともできます。

たとえば、`config.py` というファイルに次のように書けます:

{* ../../docs_src/settings/app01_py310/config.py *}

そして、`main.py` というファイルでそれを使います:

{* ../../docs_src/settings/app01_py310/main.py hl[3,11:13] *}

/// tip | 豆知識

[大規模アプリケーション - 複数ファイル](../tutorial/bigger-applications.md) で見たように、`__init__.py` ファイルも必要です。

///

port number, HTTPS settings, and preferred network protocols (like HTTP/2).

URLs that share the same address may also share the same underlying TCP socket connection. Sharing a connection has substantial performance benefits: lower latency, higher throughput (due to [TCP slow start](https://www.igvita.com/2011/10/20/faster-web-vs-tcp-slow-start/)) and conserved battery. OkHttp uses a [ConnectionPool](https://square.github.io/okhttp/5.x/okhttp/okhttp3/-connection-pool/) that automatically reuses...

  }

  @Override
  public @Nullable E ceiling(E element) {
    int index = tailIndex(element, true);
    return (index == size()) ? null : elements.get(index);
  }

  @Override
  public @Nullable E higher(E element) {
    int index = tailIndex(element, false);
    return (index == size()) ? null : elements.get(index);
  }

  @Override
  ImmutableSortedSet<E> headSetImpl(E toElement, boolean inclusive) {

### Fichier d’application **FastAPI** { #fastapi-app-file }

Supposons que vous ayez une structure de fichiers comme décrit dans [Applications plus grandes](bigger-applications.md) :

```
.
├── app
│   ├── __init__.py
│   └── main.py
```

Dans le fichier `main.py`, vous avez votre application **FastAPI** :

            // andx not used; return
            return dstIndex - start;
        }

        /* The message provided to batch has a batchLimit that is
         * higher than the current batchLevel so we will now encode
         * that chained message. Before doing so we must increment
         * the batchLevel of the andx message in case it itself is an

     */
    protected abstract void doWrite(XmlNode node, Writer writer) throws IOException;

    /**
     * Implementation method for merging two XML nodes.
     *
     * @param dominant the dominant (higher priority) XML node
     * @param recessive the recessive (lower priority) XML node
     * @param childMergeOverride optional override for the child merge mode
     * @return the merged XML node, or null if both inputs are null