* <a href="https://speakeasy.com/editor?utm_source=fastapi+repo&utm_medium=github+sponsorship" class="external-link" target="_blank">Speakeasy</a>
* <a href="https://www.stainless.com/?utm_source=fastapi&utm_medium=referral" class="external-link" target="_blank">Stainless</a>
* <a href="https://developers.liblab.com/tutorials/sdk-for-fastapi?utm_source=fastapi" class="external-link" target="_blank">liblab</a>

### Установка `pydantic-settings` { #install-pydantic-settings }

Сначала убедитесь, что вы создали [виртуальное окружение](../virtual-environments.md){.internal-link target=_blank}, активировали его, а затем установили пакет `pydantic-settings`:

<div class="termy">

```console
$ pip install pydantic-settings

from pydantic.v1 import BaseSettings


class Settings(BaseSettings):
    app_name: str = "Awesome API"
    admin_email: str
    items_per_user: int = 50

    class Config:

  public void testPreconditions() {
    assertThrows(
        IllegalArgumentException.class,
        () -> BloomFilter.create(Funnels.unencodedCharsFunnel(), -1));
    assertThrows(
        IllegalArgumentException.class,
        () -> BloomFilter.create(Funnels.unencodedCharsFunnel(), -1, 0.03));
    assertThrows(
        IllegalArgumentException.class,
        () -> BloomFilter.create(Funnels.unencodedCharsFunnel(), 1, 0.0));

 * </p>
 *
 * <p>
 * Example usage:
 * </p>
 *
 * <pre>
 * try {
 *     // Attempt to access a resource
 * } catch (CrawlingAccessException e) {
 *     if (e.isErrorEnabled()) {
 *         // Log the error
 *     }
 * }
 * </pre>
 */
public class CrawlingAccessException extends CrawlerSystemException {

    private static final long serialVersionUID = 1L;
    protected static final Class<?> suppressUnusedImportLocalDateTime = LocalDateTime.class;

    // ===================================================================================
    //                                                                           Attribute

/**
 * Tests for SMB1 transaction response handling
 */
public class TestSmbComTransactionResponseReader {

    /**
     * Default configuration used for Unicode support tests
     */
    private Configuration cfg;

    @BeforeEach
    public void setup() throws Exception {
        this.cfg = new BaseConfiguration(true);
    }

    /**
     * Sub-class of {@link BaseConfiguration} that forces {@code useUnicode()}

    protocols: List<Protocol>,
  ) {
    // No TLS extensions if the socket class is custom.
    socketAdapters
      .find { it.matchesSocket(sslSocket) }
      ?.configureTlsExtensions(sslSocket, hostname, protocols)
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? =
    // No TLS extensions if the socket class is custom.
    socketAdapters.find { it.matchesSocket(sslSocket) }?.getSelectedProtocol(sslSocket)

  }

  private static final class ThrowingTearDown implements TearDown {

    private final String id;
    boolean ran = false;

    ThrowingTearDown(String id) {
      this.id = id;
    }

    @Override
    public void tearDown() throws Exception {
      ran = true;
      throw new RuntimeException(id);
    }
  }

  private static final class SimpleTearDown implements TearDown {

Ahora, ejecuta el comando `fastapi` con tu archivo:

<div class="termy">

```console
$ fastapi dev main.py

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

Y abre la documentación en <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.