ExecutionException e = assertThrows(ExecutionException.class, () -> chain.get());
    assertThat(e.getCause()).isInstanceOf(BadFutureRuntimeException.class);
  }

  /** Proxy to throw a {@link RuntimeException} out of the {@link #get()} method. */
  public static class BadFuture extends SimpleForwardingListenableFuture<Integer> {
    protected BadFuture(ListenableFuture<Integer> delegate) {
      super(delegate);
    }

    ExecutionException e = assertThrows(ExecutionException.class, () -> chain.get());
    assertThat(e.getCause()).isInstanceOf(BadFutureRuntimeException.class);
  }

  /** Proxy to throw a {@link RuntimeException} out of the {@link #get()} method. */
  public static class BadFuture extends SimpleForwardingListenableFuture<Integer> {
    protected BadFuture(ListenableFuture<Integer> delegate) {
      super(delegate);
    }

/// info | Інформація
`status_code` також може отримувати значення з `IntEnum`, наприклад, з Python <a href="https://docs.python.org/3/library/http.html#http.HTTPStatus" class="external-link" target="_blank">`http.HTTPStatus`</a>.

///

Він буде:

* Повертати вказаний код статусу у відповіді.
* Документувати його як такий у схемі OpenAPI (і, таким чином, в інтерфейсі користувача):

Starlette (y **FastAPI**) están basados en <a href="https://anyio.readthedocs.io/en/stable/" class="external-link" target="_blank">AnyIO</a>, lo que lo hace compatible tanto con el <a href="https://docs.python.org/3/library/asyncio-task.html" class="external-link" target="_blank">asyncio</a> del paquete estándar de Python como con <a href="https://trio.readthedocs.io/en/stable/" class="external-link" target="_blank">Trio</a>.

     * {@link org.apache.maven.api.services.BuilderProblem.Severity#ERROR}.
     */
    default boolean hasErrorProblems() {
        return hasProblemsFor(BuilderProblem.Severity.ERROR);
    }

    /**
     * Returns {@code true} if there is at least one problem collected with severity equal or more severe than
     * {@link org.apache.maven.api.services.BuilderProblem.Severity#FATAL}.
     */

## Conclusion { #conclusion }

With this you should have a basic understanding of what **environment variables** are and how to use them in Python.

You can also read more about them in the <a href="https://en.wikipedia.org/wiki/Environment_variable" class="external-link" target="_blank">Wikipedia for Environment Variable</a>.

Por padrão, o **FastAPI** irá converter automaticamente o valor do retorno para JSON utilizando o `jsonable_encoder` explicado em [JSON Compatible Encoder](../tutorial/encoder.md){.internal-link target=_blank}.

Então, por baixo dos panos, ele incluiria esses dados compatíveis com JSON (e.g. um `dict`) dentro de uma `JSONResponse` que é utilizada para enviar uma resposta para o cliente.

/// info | Info

Um Formulare zu verwenden, installieren Sie zuerst <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

Erstellen Sie unbedingt eine [virtuelle Umgebung](../virtual-environments.md){.internal-link target=_blank}, aktivieren Sie diese und installieren Sie dann das Paket, zum Beispiel:

```console
$ pip install python-multipart
```

///

import java.util.HashSet;
import java.util.Set;
import org.jspecify.annotations.Nullable;

/**
 * Based on what a {@link Type} is, dispatch it to the corresponding {@code visit*} method. By
 * default, no recursion is done for type arguments or type bounds. But subclasses can opt to do
 * recursion by calling {@link #visit} for any {@code Type} while visitation is in progress. For

import java.nio.ByteBuffer;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import javax.crypto.Mac;

/**
 * {@link HashFunction} adapter for {@link Mac} instances.
 *
 * @author Kurt Alfred Kluever
 */
@Immutable
final class MacHashFunction extends AbstractHashFunction {

  @SuppressWarnings("Immutable") // cloned before each use