from fastapi import FastAPI, Security
from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
from fastapi.testclient import TestClient

app = FastAPI()

security = HTTPBearer()


@app.get("/users/me")
def read_current_user(credentials: HTTPAuthorizationCredentials = Security(security)):
    return {"scheme": credentials.scheme, "credentials": credentials.credentials}


client = TestClient(app)

from fastapi import FastAPI, Security
from fastapi.security import HTTPAuthorizationCredentials, HTTPDigest
from fastapi.testclient import TestClient

app = FastAPI()

security = HTTPDigest(description="HTTPDigest scheme")


@app.get("/users/me")
def read_current_user(credentials: HTTPAuthorizationCredentials = Security(security)):
    return {"scheme": credentials.scheme, "credentials": credentials.credentials}


client = TestClient(app)

from fastapi import FastAPI
from fastapi.routing import APIRoute

app = FastAPI()


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


def use_route_names_as_operation_ids(app: FastAPI) -> None:
    """
    Simplify operation IDs so that generated API clients have simpler function
    names.

    Should be called only after all routes have been added.
    """
    for route in app.routes:

```

`FastAPI` ist eine Python-Klasse, die die gesamte Funktionalität für Ihre API bereitstellt.

/// note | "Technische Details"

`FastAPI`  ist eine Klasse, die direkt von `Starlette` erbt.

Sie können alle <a href="https://www.starlette.io/" class="external-link" target="_blank">Starlette</a>-Funktionalitäten auch mit `FastAPI` nutzen.

///

### Schritt 2: Erzeugen einer `FastAPI`-„Instanz“

```Python hl_lines="3"

```JSON
{"item_id":3}
```

/// check | "Ek bilgi"

Dikkatinizi çekerim ki, fonksiyonunuzun aldığı (ve döndürdüğü) değer olan `3` bir string `"3"` değil aksine bir Python `int`'idir.

Bu tanımlamayla birlikte, **FastAPI** size otomatik istek <abbr title="HTTP isteği ile birlikte gelen string'i Python verisine dönüştürme">"ayrıştırma"</abbr> özelliği sağlar.

///

## Veri Doğrulama

{!../../docs_src/websockets/tutorial001.py!}
```

## Einen `websocket` erstellen

Erstellen Sie in Ihrer **FastAPI**-Anwendung einen `websocket`:

```Python hl_lines="1  46-47"
{!../../docs_src/websockets/tutorial001.py!}
```

/// note | "Technische Details"

Sie können auch `from starlette.websockets import WebSocket` verwenden.

import pytest
from dirty_equals import IsDict
from fastapi.testclient import TestClient


@pytest.fixture(name="client")
def get_client():
    from docs_src.schema_extra_example.tutorial005_an import app

    client = TestClient(app)
    return client


def test_post_body_example(client: TestClient):
    response = client.put(
        "/items/5",
        json={
            "name": "Foo",

import pytest
from dirty_equals import IsDict
from fastapi.testclient import TestClient

from ...utils import needs_py310


@pytest.fixture(name="client")
def get_client():
    from docs_src.schema_extra_example.tutorial005_py310 import app

    client = TestClient(app)
    return client


@needs_py310
def test_post_body_example(client: TestClient):
    response = client.put(
        "/items/5",
        json={

## 간단한 사용법

이를 보면, *경로 작동 함수*는 *경로*와 *작동*이 매칭되면 언제든지 사용되도록 정의되었으며, **FastAPI**는 올바른 매개변수를 가진 함수를 호출하고 해당 요청에서 데이터를 추출합니다.

사실, 모든 (혹은 대부분의) 웹 프레임워크는 이와 같은 방식으로 작동합니다.

여러분은 이러한 함수들을 절대 직접 호출하지 않습니다. 프레임워크(이 경우 **FastAPI**)에 의해 호출됩니다.

의존성 주입 시스템과 함께라면 **FastAPI**에게 여러분의 *경로 작동 함수*가 실행되기 전에 실행되어야 하는 무언가에 여러분의 *경로 작동 함수* 또한 "의존"하고 있음을 알릴 수 있으며, **FastAPI**는 이를 실행하고 결과를 "주입"할 것입니다.

"의존성 주입"이라는 동일한 아이디어에 대한 다른 일반적인 용어는 다음과 같습니다:

from fastapi import FastAPI, HTTPException
from fastapi.exceptions import RequestValidationError
from fastapi.responses import PlainTextResponse
from starlette.exceptions import HTTPException as StarletteHTTPException

app = FastAPI()


@app.exception_handler(StarletteHTTPException)
async def http_exception_handler(request, exc):
    return PlainTextResponse(str(exc.detail), status_code=exc.status_code)