You can also declare the `Response` parameter in dependencies, and set headers (and cookies) in them.

## Return a `Response` directly { #return-a-response-directly }

You can also add headers when you return a `Response` directly.

        final List<String> commands = Arrays.asList("command1", "command2", "command3");
        generator.setCommandList(commands);
        assertTrue(true);
    }

    // Basic generate tests that work without component dependencies
    @Test
    public void test_generate_outputFile_exists() throws Exception {
        final File outputFile = File.createTempFile("command_generator", ".out");
        try {
            assertTrue(outputFile.exists());

### Dépendances { #dependencies }

La même chose s'applique aux [dépendances](tutorial/dependencies/index.md). Si une dépendance est définie avec `def` plutôt que `async def`, elle est exécutée dans la threadpool externe.

### Sous-dépendances { #sub-dependencies }

        SmbComNTCreateAndXResponse resp = mock(SmbComNTCreateAndXResponse.class);

        // Act
        pipe.customizeCreate(req, resp);

        // Assert: verify interactions with dependencies
        verify(req, times(1)).addFlags0(0x16);
        verify(resp, times(1)).setExtended(true);
        verify(resp, never()).setExtended(false);
    }

    @Test

    pass  # pragma: nocover


callback_router5 = APIRouter()


@callback_router5.get("/")
async def callback5(level5: str):
    pass  # pragma: nocover


app = FastAPI(
    dependencies=[Depends(dep0)],
    responses={
        400: {"description": "Client error level 0"},
        500: {"description": "Server error level 0"},
    },
    default_response_class=ResponseLevel0,

 * <p>This interface is now a legacy type. Use {@code java.util.function.Predicate} (or the
 * appropriate primitive specialization such as {@code IntPredicate}) instead whenever possible.
 * Otherwise, at least reduce <i>explicit</i> dependencies on this type by using lambda expressions
 * or method references instead of classes, leaving your code easier to migrate in the future.
 *

  - [Changes by Kind](#changes-by-kind)
    - [Feature](#feature)
    - [Bug or Regression](#bug-or-regression)
    - [Other (Cleanup or Flake)](#other-cleanup-or-flake)
  - [Dependencies](#dependencies)
    - [Added](#added)
    - [Changed](#changed)
    - [Removed](#removed)
- [v1.28.14](#v12814)
  - [Downloads for v1.28.14](#downloads-for-v12814)
    - [Source Code](#source-code-1)

Pour en savoir plus, consultez la section [Benchmarks](https://fastapi.tiangolo.com/fr/benchmarks/).

## Dépendances { #dependencies }

FastAPI dépend de Pydantic et Starlette.

### Dépendances `standard` { #standard-dependencies }

Lorsque vous installez FastAPI avec `pip install "fastapi[standard]"`, il inclut le groupe `standard` de dépendances optionnelles :

Utilisées par Pydantic :

    keep all of your OkHttp artifacts on the same version, even if they're declared via transitive
    dependencies. You can even omit versions when declaring other OkHttp dependencies.

    ```kotlin
    dependencies {
       api(platform("com.squareup.okhttp3:okhttp-bom:4.4.0"))
       api("com.squareup.okhttp3:okhttp")              // No version!

This is a simple guide to get you started and teach you how everything works **underneath**.

There are many **alternatives** to managing virtual environments, package dependencies (requirements), projects.

Once you are ready and want to use a tool to **manage the entire project**, packages dependencies, virtual environments, etc. I would suggest you try [uv](https://github.com/astral-sh/uv).

`uv` can do a lot of things, it can: