E seu aplicativo **FastAPI** também pode ser composto de vários arquivos/módulos, etc.

### Arquivo do aplicativo **FastAPI**

Digamos que você tenha uma estrutura de arquivo conforme descrito em [Aplicativos maiores](bigger-applications.md){.internal-link target=_blank}:

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

No arquivo `main.py` você tem seu aplicativo **FastAPI**:


```Python

无论路径装饰器依赖项是否返回值，路径操作都不会使用这些值。

因此，可以复用在其他位置使用过的、（能返回值的）普通依赖项，即使没有使用这个值，也会执行该依赖项：

```Python hl_lines="9  14"
{!../../docs_src/dependencies/tutorial006.py!}
```

## 为一组路径操作定义依赖项

稍后，[大型应用 - 多文件](../../tutorial/bigger-applications.md){.internal-link target=\_blank}一章中会介绍如何使用多个文件创建大型应用程序，在这一章中，您将了解到如何为一组*路径操作*声明单个 `dependencies` 参数。

## 全局依赖项

///

## 🎏 💯

🎰 🈸, 👆 🎲 🔜 ✔️ 👆 💯 🎏 📁.

& 👆 **FastAPI** 🈸 5️⃣📆 ✍ 📚 📁/🕹, ♒️.

### **FastAPI** 📱 📁

➡️ 💬 👆 ✔️ 📁 📊 🔬 [🦏 🈸](bigger-applications.md){.internal-link target=_blank}:

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

📁 `main.py` 👆 ✔️ 👆 **FastAPI** 📱:


```Python
{!../../docs_src/app_testing/main.py!}

The response object will also have autocompletion:

<img src="/img/tutorial/generate-clients/image05.png">

## FastAPI App with Tags

In many cases your FastAPI app will be bigger, and you will probably use tags to separate different groups of *path operations*.

For example, you could have a section for **items** and another section for **users**, and they could be separated by tags:

///

```Python hl_lines="9  14"
{!> ../../docs_src/dependencies/tutorial006.py!}
```

////

## *경로 작동* 모음에 대한 의존성

나중에 여러 파일을 가지고 있을 수 있는 더 큰 애플리케이션을 구조화하는 법([더 큰 애플리케이션 - 여러 파일들](../../tutorial/bigger-applications.md){.internal-link target=_blank})을 읽을 때, *경로 작동* 모음에 대한 단일 `dependencies` 매개변수를 선언하는 법에 대해서 배우게 될 것입니다.

## 전역 의존성

## 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 <a href="https://docs.celeryq.dev" class="external-link" target="_blank">Celery</a>.

      - tutorial/security/simple-oauth2.md
      - tutorial/security/oauth2-jwt.md
    - tutorial/middleware.md
    - tutorial/cors.md
    - tutorial/sql-databases.md
    - tutorial/bigger-applications.md
    - tutorial/background-tasks.md
    - tutorial/metadata.md
    - tutorial/static-files.md
    - tutorial/testing.md
    - tutorial/debugging.md
  - Advanced User Guide:

func (e PartTooSmall) Error() string {
	return fmt.Sprintf("Part size for %d should be at least 5MB", e.PartNumber)
}

// PartTooBig returned if size of part is bigger than the allowed limit.
type PartTooBig struct{}

func (e PartTooBig) Error() string {
	return "Part size bigger than the allowed limit"
}

// InvalidETag error returned when the etag has changed on disk
type InvalidETag struct{}

    )


@needs_py39
def test_root_token_jessica(client: TestClient):
    response = client.get("/?token=jessica")
    assert response.status_code == 200
    assert response.json() == {"message": "Hello Bigger Applications!"}


@needs_py39
def test_root_with_no_token(client: TestClient):
    response = client.get("/")
    assert response.status_code == 422
    assert response.json() == IsDict(
        {

    verifyTableSize(60, 60, 128);
    verifyTableSize(120, 60, 256);
    // if the table is only double the necessary size, we don't bother resizing it
    verifyTableSize(180, 60, 128);
    // but if it's even bigger than double, we rebuild the table
    verifyTableSize(17, 17, 32);
    verifyTableSize(17, 16, 32);
    verifyTableSize(17, 15, 32);
  }

  @GwtIncompatible // RegularImmutableSet.table not in emulation