* validação de dados
* serialização de dados
* documentação de dados, etc.

Isso funciona da mesma forma que com os modelos Pydantic. E na verdade é alcançado da mesma maneira por baixo dos panos, usando Pydantic.

/// info | Informação

Lembre-se de que dataclasses não podem fazer tudo o que os modelos Pydantic podem fazer.

Então, você ainda pode precisar usar modelos Pydantic.

```JSON
{
    "name": "Foo",
    "price": 50.2
}
```

/// info

FastAPI ⚙️ Pydantic 🏷 `.dict()` ⏮️ <a href="https://docs.pydantic.dev/latest/concepts/serialization/#modeldict" class="external-link" target="_blank">🚮 `exclude_unset` 🔢</a> 🏆 👉.

///

/// info

👆 💪 ⚙️:

* `response_model_exclude_defaults=True`
* `response_model_exclude_none=True`

	}
	if idx+1 > len(z.serverPools) {
		return pi, errInvalidArgument
	}

	info := z.serverPools[idx].StorageInfo(context.Background())
	info.Backend = z.BackendInfo()

	usableTotal := int64(GetTotalUsableCapacity(info.Disks, info))
	usableFree := int64(GetTotalUsableCapacityFree(info.Disks, info))
	return poolSpaceInfo{
		Total: usableTotal,
		Free:  usableFree,

# Some more code
```

👈 💼, 🏧 🔢 🔘 `myapp.py` 🔜 🚫 ✔️ 🔢 `__name__` ⏮️ 💲 `"__main__"`.

, ⏸:

```Python
    uvicorn.run(app, host="0.0.0.0", port=8000)
```

🔜 🚫 🛠️.

/// info

🌅 ℹ, ✅ <a href="https://docs.python.org/3/library/__main__.html" class="external-link" target="_blank">🛂 🐍 🩺</a>.

///

## 🏃 👆 📟 ⏮️ 👆 🕹

	display_name="Login via dex1" \
	role_policy="consoleAdmin"

./mc admin service restart myminio --json
./mc ready myminio
./mc admin cluster iam import myminio docs/distributed/samples/myminio-iam-info-openid.zip

# Verify if buckets / objects accessible using service account
echo "Verifying buckets and objects access for the imported service account"

./mc ls myminio1/ --json

            crawlingConfigHelper = getComponent(CRAWLING_CONFIG_HELPER);
        }
        return crawlingConfigHelper;
    }

    /**
     * Gets the crawling info helper component.
     * @return The crawling info helper.
     */
    public static CrawlingInfoHelper getCrawlingInfoHelper() {
        return getComponent(CRAWLING_INFO_HELPER);
    }

    /**

/// info

`open()` 🔢, `mode="a"` ⛓ "🎻",, ⏸ 🔜 🚮 ⏮️ ⚫️❔ 🔛 👈 📁, 🍵 📁 ⏮️ 🎚.

///

/// tip

👀 👈 👉 💼 👥 ⚙️ 🐩 🐍 `open()` 🔢 👈 🔗 ⏮️ 📁.

, ⚫️ 🔌 👤/🅾 (🔢/🔢), 👈 🚚 "⌛" 👜 ✍ 💾.

✋️ `open()` 🚫 ⚙️ `async` & `await`.

, 👥 📣 🎉 🐕‍🦺 🔢 ⏮️ 🐩 `def` ↩️ `async def`.

///

/// info

{* ../../docs_src/additional_responses/tutorial001.py hl[18,22] *}

/// note | Hinweis

Beachten Sie, dass Sie die `JSONResponse` direkt zurückgeben müssen.

///

/// info

Der `model`-Schlüssel ist nicht Teil von OpenAPI.

**FastAPI** nimmt das Pydantic-Modell von dort, generiert das JSON-Schema und fügt es an der richtigen Stelle ein.

Die richtige Stelle ist:

With it, you can use <a href="https://docs.pytest.org/" class="external-link" target="_blank">pytest</a> directly with **FastAPI**.

## Using `TestClient` { #using-testclient }

/// info

To use `TestClient`, first install <a href="https://www.python-httpx.org" class="external-link" target="_blank">`httpx`</a>.

{* ../../docs_src/additional_responses/tutorial001.py hl[18,22] *}

/// note | Nota

Ten en cuenta que debes devolver el `JSONResponse` directamente.

///

/// info | Información

La clave `model` no es parte de OpenAPI.

**FastAPI** tomará el modelo de Pydantic de allí, generará el JSON Schema y lo colocará en el lugar correcto.

El lugar correcto es: