But, sadly, you get nothing useful:

<img src="/img/python-types/image01.png">

### Add types { #add-types }

Let's modify a single line from the previous version.

We will change exactly this fragment, the parameters of the function, from:

```Python
    first_name, last_name
```

to:

```Python
    first_name: str, last_name: str

 * share the same [Address] may share a [Connection]. This class implements the policy
 * of which connections to keep open for future use.
 *
 * @constructor Create a new connection pool with tuning parameters appropriate for a single-user
 * application. The tuning parameters in this pool are subject to change in future OkHttp releases.
 * Currently this pool holds up to 5 idle connections which will be evicted after 5 minutes of
 * inactivity.
 */

import org.opensearch.index.query.QueryBuilder;
import org.opensearch.index.query.QueryBuilders;

/**
 * Job for exporting indexed search documents to the filesystem.
 * Each document is exported as a single file with URL structure mapped to directory structure.
 */
public class IndexExportJob {

    private static final Logger logger = LogManager.getLogger(IndexExportJob.class);

        assertEquals(FileNotifyInformation.FILE_ACTION_ADDED, info.getAction());
        assertEquals("testfile.txt", info.getFileName());
    }

    @Test
    @DisplayName("Test decode with valid single entry")
    void testDecodeValidSingleEntry() throws SMBProtocolDecodingException {
        String fileName = "document.pdf";
        int action = FileNotifyInformation.FILE_ACTION_MODIFIED;

    try {
      val certificateFactory = CertificateFactory.getInstance("X.509")
      val certificates = certificateFactory.generateCertificates(Buffer().write(data).inputStream())
      return certificates.single() as X509Certificate
    } catch (e: NoSuchElementException) {
      throw IllegalArgumentException("failed to decode certificate", e)
    } catch (e: IllegalArgumentException) {

      transitionStates.add(state());
      return directExecutor();
    }
  }

  // Functional tests using real thread. We only verify publicly visible state.
  // Interaction assertions are done by the single-threaded unit tests.

  private static class DefaultService extends AbstractIdleService {
    @Override
    protected void startUp() throws Exception {}

    @Override

  // The number of compression rounds.
  private final int c;
  // The number of finalization rounds.
  private final int d;
  // Two 64-bit keys (represent a single 128-bit key).
  private final long k0;
  private final long k1;

  /**
   * @param c the number of compression rounds (must be positive)
   * @param d the number of finalization rounds (must be positive)

import jcifs.CIFSContext;
import jcifs.CIFSException;
import jcifs.Credentials;

/**
 * Tests for SmbRenewableCredentials interface.
 *
 * Since this file is an interface with a single method, we provide small
 * helper implementations to exercise expected interaction patterns and edge cases.
 */
@ExtendWith(MockitoExtension.class)
public class SmbRenewableCredentialsTest {

    @Test
    @DisplayName("handleDFSReferral returns resolved UNC path as stubbed")
    void handleDfsReferralValidInputs() {
        // Edge-like Windows UNC-style: a single backslash in the path
        String reqPath = "\\";
        String resolved = "smb://server/share/path";
        when(locator.handleDFSReferral(referral, reqPath)).thenReturn(resolved);

/// info | Información

`Body` también tiene todos los mismos parámetros de validación y metadatos extras que `Query`, `Path` y otros que verás luego.

///

## Embeber un solo parámetro de cuerpo { #embed-a-single-body-parameter }

Supongamos que solo tienes un único parámetro de cuerpo `item` de un modelo Pydantic `Item`.

Por defecto, **FastAPI** esperará su cuerpo directamente.