- body
            - background
            - raw_headers
            - render
            - init_headers
            - headers
            - set_cookie
            - delete_cookie

## Starlette Responses

::: fastapi.responses.FileResponse
    options:
        members:
            - chunk_size
            - charset
            - status_code
            - media_type
            - body

Néanmoins, cela reste faisable dans **FastAPI**, via les outils internes de Starlette.

Et la documentation fonctionne quand même, bien qu'aucune section ne soit ajoutée pour dire que la paramètre devrait contenir un *chemin*.

### Convertisseur de *chemin*

En utilisant une option de Starlette directement, vous pouvez déclarer un *paramètre de chemin* contenant un *chemin* avec une URL comme :

```

from fastapi.utils import (
    deep_dict_update,
    generate_operation_id_for_path,
    is_body_allowed_for_status_code,
)
from pydantic import BaseModel
from starlette.responses import JSONResponse
from starlette.routing import BaseRoute
from typing_extensions import Literal

validation_error_definition = {
    "title": "ValidationError",
    "type": "object",
    "properties": {
        "loc": {

    "Programming Language :: Python :: 3.13",
    "Programming Language :: Python :: 3.14",
    "Topic :: Internet :: WWW/HTTP :: HTTP Servers",
    "Topic :: Internet :: WWW/HTTP",
]
dependencies = [
    "starlette>=0.40.0,<0.51.0",
    "pydantic>=2.7.0",
    "typing-extensions>=4.8.0",
    "annotated-doc>=0.0.2",
]

[project.urls]
Homepage = "https://github.com/fastapi/fastapi"

Comme vous l'avez vu dans la documentation, FastAPI se tient sur les épaules des géants, Starlette et Pydantic.

Vous pouvez également parrainer :

* <a href="https://github.com/sponsors/samuelcolvin" class="external-link" target="_blank">Samuel Colvin (Pydantic)</a>
* <a href="https://github.com/sponsors/encode" class="external-link" target="_blank">Encode (Starlette, Uvicorn)</a>

---

/// note | Detalhes Técnicos

Você também pode usar `from starlette.middleware.cors import CORSMiddleware`.

**FastAPI** fornece vários middlewares em `fastapi.middleware` apenas como uma conveniência para você, o desenvolvedor. Mas a maioria dos middlewares disponíveis vêm diretamente da Starlette.

我甚至为它做了不少贡献，让它完美兼容了 JSON Schema，支持多种方式定义约束声明，并基于多个编辑器，改进了它对编辑器支持（类型检查、自动补全）。

在开发期间，我还为 <a href="https://www.starlette.dev/" class="external-link" target="_blank">**Starlette**</a> 做了不少贡献，这是另一个关键需求项。

## 开发

当我启动 **FastAPI** 开发的时候，绝大多数部件都已经就位，设计已经定义，需求项和工具也已经准备就绪，相关标准与规范的知识储备也非常清晰而新鲜。

## 未来

至此，**FastAPI** 及其理念已经为很多人所用。

对于很多用例，它比以前很多备选方案都更适用。

`FastAPI` це клас у Python, який надає всю функціональність для API.

/// note | Технічні деталі

`FastAPI` це клас, який успадковується безпосередньо від `Starlette`.

Ви також можете використовувати всю функціональність <a href="https://www.starlette.dev/" class="external-link" target="_blank">Starlette</a> у `FastAPI`.

///

### Крок 2: створюємо екземпляр `FastAPI`

{* ../../docs_src/first_steps/tutorial001.py hl[3] *}

/// info

You can read more about the Starlette `lifespan` handlers in <a href="https://www.starlette.dev/lifespan/" class="external-link" target="_blank">Starlette's  Lifespan' docs</a>.

Including how to handle lifespan state that can be used in other areas of your code.

///

import pytest
from fastapi import APIRouter, FastAPI
from fastapi.routing import APIRoute
from fastapi.testclient import TestClient
from starlette.routing import Route

app = FastAPI()


class APIRouteA(APIRoute):
    x_type = "A"


class APIRouteB(APIRoute):
    x_type = "B"


class APIRouteC(APIRoute):
    x_type = "C"


router_a = APIRouter(route_class=APIRouteA)
router_b = APIRouter(route_class=APIRouteB)