Dies wird in OpenAPI mit `anyOf` definiert.

Um das zu tun, verwenden Sie den Standard-Python-Typhinweis [`typing.Union`](https://docs.python.org/3/library/typing.html#typing.Union):

/// note | Hinweis

from typing import Annotated, Any

import pytest
from fastapi import Depends, FastAPI, HTTPException
from fastapi.testclient import TestClient


class CustomError(Exception):
    pass


def catching_dep() -> Any:
    try:
        yield "s"
    except CustomError as err:
        raise HTTPException(status_code=418, detail="Session error") from err


def broken_dep() -> Any:
    yield "s"

from typing import Annotated

from fastapi import FastAPI, File, UploadFile
from fastapi.responses import HTMLResponse

app = FastAPI()


@app.post("/files/")
async def create_files(files: Annotated[list[bytes], File()]):
    return {"file_sizes": [len(file) for file in files]}


@app.post("/uploadfiles/")
async def create_upload_files(files: list[UploadFile]):
    return {"filenames": [file.filename for file in files]}

Bir **request** body tanımlamak için, tüm gücü ve avantajlarıyla [Pydantic](https://docs.pydantic.dev/) modellerini kullanırsınız.

/// info | Bilgi

Veri göndermek için şunlardan birini kullanmalısınız: `POST` (en yaygını), `PUT`, `DELETE` veya `PATCH`.

`GET` request'i ile body göndermek, spesifikasyonlarda tanımsız bir davranıştır; yine de FastAPI bunu yalnızca çok karmaşık/uç kullanım senaryoları için destekler.

import time
from typing import Annotated

from fastapi import Depends, FastAPI, HTTPException
from fastapi.responses import StreamingResponse
from sqlmodel import Field, Session, SQLModel, create_engine

engine = create_engine("postgresql+psycopg://postgres:postgres@localhost/db")


class User(SQLModel, table=True):
    id: int | None = Field(default=None, primary_key=True)
    name: str


app = FastAPI()


def get_session():

from typing import Annotated

import pytest
from fastapi import Depends, FastAPI, Security
from fastapi.testclient import TestClient


@pytest.fixture(name="call_counter")
def call_counter_fixture():
    return {"count": 0}


@pytest.fixture(name="app")
def app_fixture(call_counter: dict[str, int]):
    def get_db():
        call_counter["count"] += 1
        return f"db_{call_counter['count']}"

# Ref: https://github.com/tiangolo/fastapi/issues/5623

from typing import Annotated, Any

from fastapi import FastAPI, Security
from fastapi.security import SecurityScopes
from fastapi.testclient import TestClient


async def security1(scopes: SecurityScopes):
    return scopes.scopes


async def security2(scopes: SecurityScopes):
    return scopes.scopes


async def dep3(

import time
from typing import Annotated

from fastapi import Depends, FastAPI, HTTPException
from fastapi.responses import StreamingResponse
from sqlmodel import Field, Session, SQLModel, create_engine

engine = create_engine("postgresql+psycopg://postgres:postgres@localhost/db")


class User(SQLModel, table=True):
    id: int | None = Field(default=None, primary_key=True)
    name: str


app = FastAPI()


def get_session():

# limitations under the License.
# ==============================================================================
source "${BASH_SOURCE%/*}/utilities/setup.sh"

from typing import Annotated

from fastapi import Body, FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None


@app.put("/items/{item_id}")
async def update_item(
    *,
    item_id: int,
    item: Annotated[
        Item,
        Body(
            openapi_examples={