* для **выхода** оно будет **обязательным** (и при этом может быть `None`, или, в терминах JSON, `null`)

### Выходная модель в документации { #model-for-output-in-docs }

В документации это тоже видно, что **оба**: `name` и `description`, помечены **красной звёздочкой** как **обязательные**:

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image03.png">
</div>

Sie werden auch eine automatische Vervollständigung für die zu sendende Payload erhalten:

<img src="/img/tutorial/generate-clients/image03.png">

/// tip | Tipp

Beachten Sie die automatische Vervollständigung für `name` und `price`, die in der FastAPI-Anwendung im `Item`-Modell definiert wurden.

///

Sie erhalten Inline-Fehlerberichte für die von Ihnen gesendeten Daten:

<img src="/img/tutorial/generate-clients/image04.png">

Marcin Erdmann <******@****.***> <******@****.***>
Marco Vermeulen <******@****.***> <******@****.***>
Mark Vieira <******@****.***> <******@****.***>
Michael Barnathan <******@****.***> <michael@barnathan.name>
Paul King <******@****.***> <******@****.***>
Paul Merlin <******@****.***> <******@****.***>
Peter Niederwieser <******@****.***> <pniederw@.(none)>

 * It is public so we can access it reflectively across class loaders in secure environments.
 *
 * <p>This class can't depend on other Guava code. If we were to load this class in the same class
 * loader as the rest of Guava, this thread would keep an indirect strong reference to the class
 * loader and prevent it from being garbage collected. This poses a problem for environments where

output being written. func TestAliasing(t *testing.T) { type target struct { name string oneArgF func(v, x *Element) *Element twoArgsF func(v, x, y *Element) *Element } for _, tt := range []target{ {name: "Absolute", oneArgF: (*Element).Absolute}, {name: "Invert", oneArgF: (*Element).Invert}, {name: "Negate", oneArgF: (*Element).Negate}, {name: "Set", oneArgF: (*Element).Set}, {name: "Square", oneArgF: (*Element).Square}, {name: "Pow22523", oneArgF: (*Element).Pow22523}, { name: "Mult32", oneArgF: func(v,...

    out.write(data);
    assertThat(source.read()).isEqualTo(data);

    out.close();
  }

  private static boolean isAndroid() {
    return System.getProperty("java.runtime.name", "").contains("Android");
  }

  private static boolean isWindows() {
    return OS_NAME.value().startsWith("Windows");
  }

  /**
   * Test that verifies the resource leak fix for <a

    // ClassLoader.
    Set<Object> shadowConstants = new HashSet<>();
    for (TestEnum constant : TestEnum.values()) {
      Optional<TestEnum> result = Enums.getIfPresent(shadowTestEnum, constant.name());
      assertThat(result).isPresent();
      shadowConstants.add(result.get());
    }
    assertEquals(ImmutableSet.<Object>copyOf(shadowTestEnum.getEnumConstants()), shadowConstants);

Por ejemplo, podrías tener un archivo `main.py` con:

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

/// tip | Consejo

El segundo argumento de [`os.getenv()`](https://docs.python.org/3.8/library/os.html#os.getenv) es el valor por defecto a retornar.

예를 들면, 위의 이 모델은 JSON "`object`" (혹은 파이썬 `dict`)을 다음과 같이 선언합니다:

```JSON
{
    "name": "Foo",
    "description": "An optional description",
    "price": 45.2,
    "tax": 3.5
}
```

...`description`과 `tax`는 (기본 값이 `None`으로 되어 있어) 선택적이기 때문에, 이 JSON "`object`"는 다음과 같은 상황에서도 유효합니다:

```JSON
{
    "name": "Foo",
    "price": 45.2
}
```

## 매개변수로서 선언하기 { #declare-it-as-a-parameter }

"},{"key":"auth_token","value":""},{"key":"enable_http2","value":"off"}]},"region":{"_":[{"key":"name","value":""}]},"scanner":{"_":[{"key":"speed","value":"default"},{"key":"idle_speed","value":""},{"key":"alert_excess_versions","value":"100"},{"key":"alert_excess_folders","value":"50000"},{"key":"delay","value":""},{"key":"max_wait","value":""},{"key":"cycle","value":""}]},"site":{"_":[{"key":"name","value":""},{"key":"region","value":""}]},"storage_class":{"_":[{"key":"standard","value":"EC:5...