{
            "url": "http://staging.localhost.tiangolo.com:8000",
            "description": "Staging but actually localhost still",
        },
        {"url": "https://prod.example.com"},
    ]
)


@app.get("/foo")
def foo():
    return {"message": "Hello World"}


client = TestClient(app)


def test_app():
    response = client.get("/foo")

                {
                    "url": "https://stag.example.com",
                    "description": "Staging environment",
                },
                {
                    "url": "https://prod.example.com",
                    "description": "Production environment",
                },
            ],
            "paths": {
                "/app": {
                    "get": {

                {
                    "url": "https://stag.example.com",
                    "description": "Staging environment",
                },
                {
                    "url": "https://prod.example.com",
                    "description": "Production environment",
                },
            ],
            "paths": {
                "/app": {
                    "get": {

{* ../../docs_src/extra_models/tutorial005_py39.py hl[6] *}

## Zusammenfassung { #recap }

Verwenden Sie gerne mehrere Pydantic-Modelle und vererben Sie je nach Bedarf.

## 0.112.2

### Fixes

* 🐛 Fix `allow_inf_nan` option for Param and Body classes. PR [#11867](https://github.com/fastapi/fastapi/pull/11867) by [@giunio-prc](https://github.com/giunio-prc).
* 🐛 Ensure that `app.include_router` merges nested lifespans. PR [#9630](https://github.com/fastapi/fastapi/pull/9630) by [@Lancetnik](https://github.com/Lancetnik).

### Refactors