from sqlalchemy.orm import sessionmaker

SQLALCHEMY_DATABASE_URL = "sqlite:///./sql_app.db"
# SQLALCHEMY_DATABASE_URL = "postgresql://user:password@postgresserver/db"

engine = create_engine(
    SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False}
)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

Durch die Nutzung all dieser vorherigen Alternativen hatte ich die Möglichkeit, von allen zu lernen, Ideen aufzunehmen und sie auf die beste Weise zu kombinieren, die ich für mich und die Entwicklerteams, mit denen ich zusammengearbeitet habe, finden konnte.

Es war beispielsweise klar, dass es idealerweise auf Standard-Python-Typhinweisen basieren sollte.

Der beste Ansatz bestand außerdem darin, bereits bestehende Standards zu nutzen.

    response = client.get("/")
    assert response.status_code == 200
    assert response.json() == {"msg": "Hello World"}


def test_websocket():
    client = TestClient(app)
    with client.websocket_connect("/ws") as websocket:
        data = websocket.receive_json()

### Connect and disconnect in the dependency `get_db()`

Then the next question would be, why not just connect and disconnect the database in the `async` dependency itself, instead of in `get_db()`?

{% endfor %}

</div>
{% endif %}

Eu sou o criador e mantenedor do **FastAPI**. Você pode ler mais sobre isso em [Help FastAPI - Get Help - Connect with the author](help-fastapi.md#conect-se-com-o-autor){.internal-link target=_blank}.

...Mas aqui eu quero mostrar a você a comunidade.

---

{% endfor %}

</div>
{% endif %}

Я - творець і супроводжувач **FastAPI**. Детальніше про це можна прочитати в [Довідка FastAPI - Отримати довідку - Зв'язатися з автором](help-fastapi.md#connect-with-the-author){.internal-link target=_blank}.

...Але тут я хочу показати вам спільноту.

---

**FastAPI** отримує велику підтримку від спільноти. І я хочу відзначити їхній внесок.

Це люди, які:

from typing import Optional

from fastapi import Depends, FastAPI, Security
from fastapi.security.open_id_connect_url import OpenIdConnect
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()

oid = OpenIdConnect(openIdConnectUrl="/openid", auto_error=False)


class User(BaseModel):
    username: str


def get_current_user(oauth_header: Optional[str] = Security(oid)):
    if oauth_header is None:

class OpenIdConnect(SecurityBase):
    """
    OpenID Connect authentication class. An instance of it would be used as a
    dependency.
    """

    def __init__(
        self,
        *,
        openIdConnectUrl: Annotated[
            str,
            Doc(
                """
            The OpenID Connect URL.
            """
            ),
        ],
        scheme_name: Annotated[

Because we can trust it to receive the `username` and `password`, as we control it.

But if you are building an OAuth2 application that others would connect to (i.e., if you are building an authentication provider equivalent to Facebook, Google, GitHub, etc.) you should use one of the other flows.

The most common is the implicit flow.

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