Para agregar etiquetas a tus *path operations*, y agruparlas en la interfaz de usuario de la documentación, lee la documentación para [Tutorial - Configuraciones de Path Operation - Etiquetas](../tutorial/path-operation-configuration.md#tags){.internal-link target=_blank}.

## Resumen y Descripción de Documentación - OpenAPI

```Python hl_lines="3  5-6"
{
    "name": "Baz",
    "description": None,
    "price": 50.2,
    "tax": 10.5,
    "tags": []
}
```

FastAPI 🙃 🥃 (🤙, Pydantic 🙃 🥃) 🤔 👈, ✋️ `description`, `tax`, & `tags` ✔️ 🎏 💲 🔢, 👫 ⚒ 🎯 (↩️ ✊ ⚪️➡️ 🔢).

, 👫 🔜 🔌 🎻 📨.

/// tip

👀 👈 🔢 💲 💪 🕳, 🚫 🕴 `None`.

👫 💪 📇 (`[]`), `float` `10.5`, ♒️.

  }

  static double bigToDouble(BigInteger x) {
    // This is an extremely fast implementation of BigInteger.doubleValue(). JDK patch pending.
    BigInteger absX = x.abs();
    int exponent = absX.bitLength() - 1;
    // exponent == floor(log2(abs(x)))
    if (exponent < Long.SIZE - 1) {
      return x.longValue();
    } else if (exponent > MAX_EXPONENT) {
      return x.signum() * POSITIVE_INFINITY;
    }

    /*

Wir hatten diese Typannotation:

//// tab | Python 3.10+

```Python
q: str | None = None
```

////

//// tab | Python 3.8+

```Python
q: Union[str, None] = None
```

////

Wir wrappen das nun in `Annotated`, sodass daraus wird:

//// tab | Python 3.10+

```Python
q: Annotated[str | None] = None
```

////

//// tab | Python 3.8+

```Python

errors.storage_no_upload_file=Especifique um arquivo para carregar.
errors.storage_directory_name_is_invalid=O nome do diretório é inválido.
errors.storage_tags_update_failure=Falha ao atualizar as tags para {0}.

success.update_crawler_params = Parâmetros atualizados.
success.delete_doc_from_index = O processo para excluir o documento do índice foi iniciado.
success.crawling_info_delete_all = Dados da sessão excluídos.

```

- List the current settings

```
$ mc ilm ls play/testbucket
     ID     |  Prefix  |  Enabled   | Expiry |  Date/Days   |  Transition  |    Date/Days     |  Storage-Class   |       Tags
------------|----------|------------|--------|--------------|--------------|------------------|------------------|------------------

У нас была аннотация следующего типа:

//// tab | Python 3.10+

```Python
q: str | None = None
```

////

//// tab | Python 3.8+

```Python
q: Union[str, None] = None
```

////

Вот что мы получим, если обернём это в `Annotated`:

//// tab | Python 3.10+

```Python
q: Annotated[str | None] = None
```

////

//// tab | Python 3.8+

```Python

			rpt.SetStatus(bucket, fileName, nil)
		case bucketTaggingConfig:
			tags, err := tags.ParseBucketXML(io.LimitReader(reader, sz))
			if err != nil {
				rpt.SetStatus(bucket, fileName, fmt.Errorf("%s (%s)", errorCodes[ErrMalformedXML].Description, err))
				continue
			}

			configData, err := xml.Marshal(tags)
			if err != nil {
				rpt.SetStatus(bucket, fileName, err)
				continue
			}

        }
    }

    private ChannelInfo selectRoundRobin(Collection<ChannelInfo> channels) {
        List<ChannelInfo> list = new ArrayList<>(channels);
        int index = Math.abs(roundRobinCounter.getAndIncrement() % list.size());
        return list.get(index);
    }

    private ChannelInfo selectLeastLoaded(Collection<ChannelInfo> channels) {
        ChannelInfo leastLoadedChannel = null;

You can use all the same validation features and tools you use for Pydantic models, like different data types and additional validations with `Field()`.

//// tab | Pydantic v2

{* ../../docs_src/settings/tutorial001.py hl[2,5:8,11] *}

////

//// tab | Pydantic v1

/// info

In Pydantic v1 you would import `BaseSettings` directly from `pydantic` instead of from `pydantic_settings`.

///