from fastapi import FastAPI

app = FastAPI()

items = {}


@app.on_event("startup")
async def startup_event():
    items["foo"] = {"name": "Fighters"}
    items["bar"] = {"name": "Tenders"}


@app.get("/items/{item_id}")
async def read_items(item_id: str):

from fastapi.testclient import TestClient

app = FastAPI()

items = {}


@app.on_event("startup")
async def startup_event():
    items["foo"] = {"name": "Fighters"}
    items["bar"] = {"name": "Tenders"}


@app.get("/items/{item_id}")
async def read_items(item_id: str):
    return items[item_id]


def test_read_items():
    with TestClient(app) as client:
        response = client.get("/items/foo")

                                        "example": {
                                            "id": "bar",
                                            "value": "The bar tenders",
                                        },
                                    }
                                },
                            },
                            "422": {

    @JvmName("of")
    fun Map<String, String>.toHeaders(): Headers = commonToHeaders()

    @JvmName("-deprecated_of")
    @Deprecated(
      message = "function moved to extension",
      replaceWith = ReplaceWith(expression = "headers.toHeaders()"),
      level = DeprecationLevel.ERROR,
    )
    fun of(headers: Map<String, String>): Headers = headers.toHeaders()
  }

///

## En-têtes personnalisés { #custom-headers }

Gardez à l'esprit que des en-têtes propriétaires personnalisés peuvent être ajoutés [en utilisant le préfixe `X-`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers).

Y como el `Response` se puede usar frecuentemente para establecer headers y cookies, **FastAPI** también lo proporciona en `fastapi.Response`.

///

## Headers Personalizados { #custom-headers }

Ten en cuenta que los headers propietarios personalizados se pueden agregar [usando el prefijo `X-`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers).

Ayrıca `Response` header ve cookie ayarlamak için sık kullanıldığından, **FastAPI** bunu `fastapi.Response` altında da sağlar.

///

## Özel Header'lar { #custom-headers }

Özel/proprietary header'ların [`X-` prefix'i kullanılarak](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers) eklenebileceğini unutmayın.

///

## Cabeçalhos personalizados { #custom-headers }

Tenha em mente que cabeçalhos personalizados proprietários podem ser adicionados [usando o prefixo `X-`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers).

///

## Пользовательские HTTP-заголовки { #custom-headers }

Помните, что собственные проприетарные заголовки можно добавлять, [используя префикс `X-`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers).

由于 `Response` 经常用于设置头部和 cookies，**FastAPI** 还在 `fastapi.Response` 中提供了它。

///

## 自定义头部 { #custom-headers }

请注意，可以通过[使用 `X-` 前缀](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers)添加自定义专有头部。