* `list`
* `tuple`
* `set`
* `dict`

Y generics desde el módulo `typing`:

* `Union`
* `Optional`
* ...y otros.

////

### Clases como tipos { #classes-as-types }

También puedes declarar una clase como el tipo de una variable.

Digamos que tienes una clase `Person`, con un nombre:

{* ../../docs_src/python_types/tutorial010_py39.py hl[1:3] *}

Using these ideas, JWT can be used for way more sophisticated scenarios.

In those cases, several of those entities could have the same ID, let's say `foo` (a user `foo`, a car `foo`, and a blog post `foo`).

# Settings and Environment Variables { #settings-and-environment-variables }

In many cases your application could need some external settings or configurations, for example secret keys, database credentials, credentials for email services, etc.

Most of these settings are variable (can change), like database URLs. And many could be sensitive, like secrets.

For this reason it's common to provide them in environment variables that are read by the application.

/// tip

      assertThat(actualStats.max()).isWithin(ALLOWED_ERROR).of(expectedStats.max());
    }
  }

  /**
   * Asserts that {@code transformation} is diagonal (i.e. neither horizontal nor vertical) and
   * passes through both {@code (x1, y1)} and {@code (x1 + xDelta, y1 + yDelta)}. Includes
   * assertions about all the public instance methods of {@link LinearTransformation} (on both

 * and to parse an input stream into a {@link SitemapSet} object.
 * It uses SAX parser for XML sitemaps and XML sitemap indexes,
 * and handles potential exceptions during parsing.
 * The class also includes inner classes for handling XML sitemap and sitemap index parsing.
 */
public class SitemapsHelper {
    private static final Logger logger = LogManager.getLogger(SitemapsHelper.class);

            // Should be path based on our initialization
            assertEquals("path", concretePath);
        }
    }

    @Nested
    @DisplayName("Edge Cases and Boundary Tests")
    class EdgeCasesTests {

        @ParameterizedTest
        @NullAndEmptySource
        @DisplayName("Should handle null and empty FQDN in fixupHost")

このイメージは、主に上記で説明した状況で役に立つでしょう： [複数のプロセスと特殊なケースを持つコンテナ（Containers with Multiple Processes and Special Cases）](#containers-with-multiple-processes-and-special-cases)

* <a href="https://github.com/tiangolo/uvicorn-gunicorn-fastapi-docker" class="external-link" target="_blank">tiangolo/uvicorn-gunicorn-fastapi</a>.

/// warning

                this.state = 6;
                ioe = ioe0;
            }
        case 4: /* failed to connect - reset the transport */
            // thread is cleaned up by connect routine, joining it here causes a deadlock
            this.thread = null;
            this.state = 6;
            break;
        default:
            log.error("Invalid state: " + this.state);
            this.thread = null;

        Rule matchedRule = ruleManager.getRule(responseData);

        assertNotNull(matchedRule);
        assertEquals("rule2", matchedRule.getRuleId());
    }

    /**
     * Test edge cases for rule ID
     */
    public void test_ruleId_edgeCases() {
        // Very long rule ID
        StringBuilder longId = new StringBuilder();
        for (int i = 0; i < 1000; i++) {

            // When & Then
            assertThrows(CIFSException.class, () -> transportPool.getChallenge(context, address));
        }
    }

    @Nested
    @DisplayName("Edge Cases and Error Handling")
    class EdgeCasesTests {

        @Test
        @DisplayName("Should handle null context")
        void testNullContext() {
            // Given