under the License.
-->

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven</groupId>
  <artifactId>maven-project-test</artifactId>
  <name>Maven</name>
  <version>1.0-beta-9</version>
  <dependencies>

    <dependency>
      <groupId>maven-test</groupId>
      <artifactId>scope-default</artifactId>
      <version>1.0</version>
    </dependency>

    <dependency>
      <groupId>maven-test</groupId>

有时，我们并不需要在*路径操作函数*中使用依赖项的返回值。

或者说，有些依赖项不返回值。

但仍要执行或解析该依赖项。

对于这种情况，不必在声明*路径操作函数*的参数时使用 `Depends`，而是可以在*路径操作装饰器*中添加一个由 `dependencies` 组成的 `list`。

## 在*路径操作装饰器*中添加 `dependencies` 参数

*路径操作装饰器*支持可选参数 ~ `dependencies`。

该参数的值是由 `Depends()` 组成的 `list`：

```Python hl_lines="17"
{!../../docs_src/dependencies/tutorial006.py!}
```

路径操作装饰器依赖项（以下简称为**“路径装饰器依赖项”**）的执行或解析方式和普通依赖项一样，但就算这些依赖项会返回值，它们的值也不会传递给*路径操作函数*。

/// tip | "提示"

* All these *path operations* will have the list of `dependencies` evaluated/executed before them.
    * If you also declare dependencies in a specific *path operation*, **they will be executed too**.
    * The router dependencies are executed first, then the [`dependencies` in the decorator](dependencies/dependencies-in-path-operation-decorators.md){.internal-link target=_blank}, and then the normal parameter dependencies.

  dependencies:
    "@types/node" "*"

"@types/eslint-scope@^3.7.3":
  version "3.7.4"
  resolved "https://registry.yarnpkg.com/@types/eslint-scope/-/eslint-scope-3.7.4.tgz#37fc1223f0786c39627068a12e94d6e6fc61de16"
  integrity sha512-9K4zoImiZc3HlIp6AVUDE4CWYx22a+lhSZMYNpbjW04+YF0KWj4pJXnEMjdnFTiQibFFmElcsasJXDbdI/EPhA==
  dependencies:
    "@types/eslint" "*"
    "@types/estree" "*"

...👥 🎯.

* 👫 🔜 ™ ⏮️ 📇 🔖 👈 🔌 👁 🎻 `"items"`.
    * 👫 "🔖" ✴️ ⚠ 🏧 🎓 🧾 ⚙️ (⚙️ 🗄).
* 🌐 👫 🔜 🔌 🔁 `responses`.
* 🌐 👫 *➡ 🛠️* 🔜 ✔️ 📇 `dependencies` 🔬/🛠️ ⏭ 👫.
    * 🚥 👆 📣 🔗 🎯 *➡ 🛠️*, **👫 🔜 🛠️ 💁‍♂️**.
    * 📻 🔗 🛠️ 🥇, ⤴️ [`dependencies` 👨‍🎨](dependencies/dependencies-in-path-operation-decorators.md){.internal-link target=_blank}, & ⤴️ 😐 🔢 🔗.

You can define dependencies that in turn can define dependencies themselves.

In the end, a hierarchical tree of dependencies is built, and the **Dependency Injection** system takes care of solving all these dependencies for you (and their sub-dependencies) and providing (injecting) the results at each step.

/**
 * Collects, flattens and resolves dependencies.
 */
@Experimental
public interface DependencyResolver extends Service {

    /**
     * Collects the transitive dependencies of some artifacts and builds a dependency graph for the given path scope.
     * Note that this operation is only concerned about determining the coordinates of the transitive dependencies and
     * does not actually resolve the artifact files.
     *

    def fun(deps: DepList):
        deps.append(name)

    return Depends(fun)


router = APIRouter(dependencies=[create_dependency("router")])
prefix_router = APIRouter(dependencies=[create_dependency("prefix_router")])
app = FastAPI(dependencies=[create_dependency("app")])


@app.websocket("/", dependencies=[create_dependency("index")])
async def index(websocket: WebSocket, deps: DepList):
    await websocket.accept()

    - tutorial/body-updates.md
    - Dependencies:
      - tutorial/dependencies/index.md
      - tutorial/dependencies/classes-as-dependencies.md
      - tutorial/dependencies/sub-dependencies.md
      - tutorial/dependencies/dependencies-in-path-operation-decorators.md
      - tutorial/dependencies/global-dependencies.md
      - tutorial/dependencies/dependencies-with-yield.md
    - Security:

  # Find all one-step dependencies of those tests which are from //tensorflow
  # (since external deps will come from Python-level pip dependencies),
  # excluding dependencies and files that are known to be unneccessary.
  # This creates a list of targets under //tensorflow that are required for
  # TensorFlow python tests.