# Return a Response Directly

When you create a **FastAPI** *path operation* you can normally return any data from it: a `dict`, a `list`, a Pydantic model, a database model, etc.

By default, **FastAPI** would automatically convert that return value to JSON using the `jsonable_encoder` explained in [JSON Compatible Encoder](../tutorial/encoder.md){.internal-link target=_blank}.

///

/// note

👀 👈 🔢 🏷 ✔.

, 🚥 👆 💚 📨 🍕 ℹ 👈 💪 🚫 🌐 🔢, 👆 💪 ✔️ 🏷 ⏮️ 🌐 🔢 ™ 📦 (⏮️ 🔢 💲 ⚖️ `None`).

🔬 ⚪️➡️ 🏷 ⏮️ 🌐 📦 💲 **ℹ** & 🏷 ⏮️ ✔ 💲 **🏗**, 👆 💪 ⚙️ 💭 🔬 [➕ 🏷](extra-models.md){.internal-link target=_blank}.

Чтобы отличить модели со всеми необязательными значениями для **обновления** от моделей с обязательными значениями для **создания**, можно воспользоваться идеями, описанными в [Дополнительные модели](extra-models.md){.internal-link target=_blank}.

Inclusive, em alguns casos, ele terá até **dois JSON Schemas** no OpenAPI para o mesmo modelo Pydantic, para entrada e saída, dependendo se eles possuem **valores padrão**.

Vamos ver como isso funciona e como alterar se for necessário.

## Modelos Pydantic para Entrada e Saída

Digamos que você tenha um modelo Pydantic com valores padrão, como este:

//// tab | Python 3.10+

```Python hl_lines="7"

  specific language governing permissions and limitations
  under the License.
-->

<model xmlns="http://codehaus-plexus.github.io/MODELLO/2.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://codehaus-plexus.github.io/MODELLO/2.0.0 https://codehaus-plexus.github.io/modello/xsd/modello-2.0.0.xsd"
  xml.namespace="http://maven.apache.org/SETTINGS/${version}"

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.model.plugin;

import org.apache.maven.model.Model;
import org.apache.maven.model.building.ModelBuildingRequest;
import org.apache.maven.model.building.ModelProblemCollector;

/**
 * Handles conversion of the <code>&lt;reporting&gt;</code> section into the configuration of Maven Site Plugin 3.x,

    full_name = user_dict["full_name"],
    disabled = user_dict["disabled"],
    hashed_password = user_dict["hashed_password"],
)
```

/// info

🌅 🏁 🔑 `**👩‍💻_ #️⃣ ` ✅ 🔙 [🧾 **➕ 🏷**](../extra-models.md#user_indict){.internal-link target=_blank}.

///

## 📨 🤝

📨 `token` 🔗 🔜 🎻 🎚.

⚫️ 🔜 ✔️ `token_type`. 👆 💼, 👥 ⚙️ "📨" 🤝, 🤝 🆎 🔜 "`bearer`".

/**
 * A test which demonstrates maven's recursive inheritance where
 * a distinct value is taken from each parent contributing to
 * the final model of the project being assembled. There is no
 * overriding going on amongst the models being used in this test:
 * each model in the lineage is providing a value that is not present
 * anywhere else in the lineage. We are just making sure that values

{!> ../../docs_src/generate_clients/tutorial001.py!}
```

////

Beachten Sie, dass die *Pfadoperationen* die Modelle definieren, welche diese für die Request- und Response-<abbr title="Die eigentlichen Nutzdaten, abzüglich der Metadaten">Payload</abbr> verwenden, indem sie die Modelle `Item` und `ResponseMessage` verwenden.

### API-Dokumentation

    }

    public MaxCodePoint(String userFriendly) {
      value = decode(userFriendly);
    }
  }

  /**
   * The default values of maxCodePoint below provide pretty good performance models of different
   * kinds of common human text.
   *
   * @see MaxCodePoint#decode
   */
  @Param({"0x80", "0x90", "0x100", "0x800", "0x10000", "0x10ffff"})
  MaxCodePoint maxCodePoint;

  @Param({"16384"})