callbacks: Optional[dict[str, Union[dict[str, "PathItem"], Reference]]] = None
    deprecated: Optional[bool] = None
    security: Optional[list[dict[str, list[str]]]] = None
    servers: Optional[list[Server]] = None


class PathItem(BaseModelWithConfig):
    ref: Optional[str] = Field(default=None, alias="$ref")
    summary: Optional[str] = None
    description: Optional[str] = None

    if contact:
        info["contact"] = contact
    if license_info:
        info["license"] = license_info
    output: dict[str, Any] = {"openapi": openapi_version, "info": info}
    if servers:
        output["servers"] = servers
    components: dict[str, dict[str, Any]] = {}
    paths: dict[str, dict[str, Any]] = {}
    webhook_paths: dict[str, dict[str, Any]] = {}
    operation_ids: set[str] = set()

    assert response.status_code == 200
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "servers": [
                {
                    "url": "https://stag.example.com",
                    "description": "Staging environment",
                },
                {

@app.command()
def serve() -> None:
    """
    A quick server to preview a built site with translations.

    For development, prefer the command live (or just mkdocs serve).

    This is here only to preview a site with translations already built.

    Make sure you run the build-all command first.
    """
    typer.echo("Warning: this is a very simple server.")
    typer.echo("For development, use the command live instead.")

INFO:     Started server process [2248757]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
```

</div>

<details markdown="1">
<summary>Über den Befehl <code>fastapi dev main.py</code> ...</summary>

FastAPI basiert auf **Pydantic**, und ich habe Ihnen gezeigt, wie Sie Pydantic-Modelle verwenden können, um <abbr title="Request – Anfrage: Daten, die der Client zum Server sendet">Requests</abbr> und <abbr title="Response – Antwort: Daten, die der Server zum anfragenden Client zurücksendet">Responses</abbr> zu deklarieren.

    assert response.status_code == 200
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "servers": [
                {"url": "/api/v1"},
                {
                    "url": "https://stag.example.com",
                    "description": "Staging environment",
                },
                {

class HTTPException(StarletteHTTPException):
    """
    An HTTP exception you can raise in your own code to show errors to the client.

    This is for client errors, invalid authentication, invalid data, etc. Not for server
    errors in your code.

    Read more about it in the
    [FastAPI docs for Handling Errors](https://fastapi.tiangolo.com/tutorial/handling-errors/).

    ## Example

    ```python

Sie haben wahrscheinlich gesehen, wie man das `response_model` und den `status_code` für eine *Pfadoperation* deklariert.

Das definiert die Metadaten der Haupt-<abbr title="Response – Antwort: Daten, die der Server zum anfragenden Client zurücksendet">Response</abbr> einer *Pfadoperation*.

Sie können auch zusätzliche Responses mit deren Modellen, Statuscodes usw. deklarieren.

INFO:     Started server process [2248757]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
```

</div>

<details markdown="1">
<summary>About the command <code>fastapi dev main.py</code>...</summary>