**FastAPI** includes utilities for all these OAuth2 authentication flows in `fastapi.security.oauth2`.

## `Security` in decorator `dependencies`

Sebastián Ramírez <******@****.***> 1728247014 +0200

Sebastián Ramírez <******@****.***> 1728247014 +0200

Sebastián Ramírez <******@****.***> 1728247014 +0200

Sebastián Ramírez <******@****.***> 1728247014 +0200

///

```Python hl_lines="1"
{!> ../../docs_src/dependencies/tutorial001_py310.py!}
```

////

//// tab | Python 3.8+ non-Annotated

/// tip | "Dica"

Utilize a versão com `Annotated` se possível.

///

```Python hl_lines="3"
{!> ../../docs_src/dependencies/tutorial001.py!}
```

////

### Declarando a dependência, no "dependente"

     * Indicates whether Maven should also build the specified projects' dependencies.
     *
     * @return an {@link Optional} containing true if dependencies should also be built, false if not, or empty if not specified
     */
    @Nonnull
    Optional<Boolean> alsoMake();

    /**
     * Indicates whether Maven should also build the specified projects' dependents.
     *

    /**
     * Shortcut for {@code getService(DependencyResolver.class).collect(...)}
     *
     * @param artifact artifact for which to get the dependencies, including transitive ones
     * @param scope the {link PathScope} to collect dependencies, must not be {@code null}
     * @return root node of the dependency graph for the given artifact
     *

* 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" "*"