/// check | Revisa

Así, con la misma declaración de tipo de Python, **FastAPI** te da validación de datos.

Observa que el error también muestra claramente el punto exacto en el que no pasó la validación.

Esto es increíblemente útil cuando estás desarrollando y debugging código que interactúa con tu API.

///

## Documentación

    return construct(array);
  }

  /**
   * Returns an immutable list containing the given elements, in order. If {@code elements} is a
   * {@link Collection}, this method behaves exactly as {@link #copyOf(Collection)}; otherwise, it
   * behaves exactly as {@code copyOf(elements.iterator()}.
   *
   * @throws NullPointerException if {@code elements} contains a null element
   */

M3M,KAAKorB,aACfze,EAAEob,2BAGH/nB,KAAK8nB,oBAKP7kB,GAAOsB,KAAM,CACZ8mB,QAAQ,EACRC,SAAS,EACTC,YAAY,EACZC,gBAAgB,EAChBC,SAAS,EACTC,QAAQ,EACRC,YAAY,EACZC,SAAS,EACTC,OAAO,EACPC,OAAO,EACPC,UAAU,EACVC,MAAM,EACNC,QAAQ,EACRjqB,MAAM,EACNkqB,UAAU,EACV7d,KAAK,EACL8d,SAAS,EACT1X,QAAQ,EACR2X,SAAS,EACTC,SAAS,EACTC,SAAS,EACTC,SAAS,EACTC,SAAS,EACTC,WAAW,EACXC,aAAa,EACbC,SAAS,EACTC,SAAS,EACTC,eAAe,EACfC,WAAW,EACXC,SAAS,EACTC,OAAO,GACL/pB,GAAOskB,MAAM2C,SAEhBjnB,GAAOsB,KAAM,CAAEoP,MAAO,UAAWsZ,KAAM,YAAc,SAAUtrB,E...

                """
                `username` string. The OAuth2 spec requires the exact field name
                `username`.
                """
            ),
        ],
        password: Annotated[
            str,
            Form(),
            Doc(
                """
                `password` string. The OAuth2 spec requires the exact field name
                `password".
                """
            ),

   *
   * <p>If {@code expectedSize} is exactly the number of entries added to the builder before {@link
   * Builder#build} is called, the builder is likely to perform better than an unsized {@link
   * #builder()} would have.
   *
   * <p>It is not specified if any performance benefits apply if {@code expectedSize} is close to,
   * but not exactly, the number of entries added to the builder.
   *
   * @since 23.1

    # Update the viewport manually
    context = browser.new_context(viewport={"width": 960, "height": 1080})
    page = context.new_page()
    page.goto("http://localhost:8000/docs")
    page.get_by_role("button", name="Item", exact=True).click()
    page.set_viewport_size({"width": 960, "height": 700})
    # Manually add the screenshot
    page.screenshot(
        path="docs/en/docs/img/tutorial/separate-openapi-schemas/image05.png"
    )

                        // explicitly exclude. Set result and stop processing.
                        result = false;
                        break;
                    }
                }
                // check for exact match
                else if (repo.equals(originalId)) {
                    result = true;
                    break;
                }
                // check for external:*

 * in Maven.</p>
 *
 * <p>Java toolchains are defined in the Maven toolchains.xml file and can
 * be referenced in the project's POM file. This enables developers to
 * specify the exact versions of Java tools they wish to use, ensuring
 * consistency across different build environments.</p>
 *
 * @since 4.0.0
 * @see Toolchain
 * @see org.apache.maven.api.services.ToolchainManager
 */
@Experimental

                                - required:
                                  - exact
                                - required:
                                  - prefix
                                - required:
                                  - regex
                            - required:
                              - exact
                            - required:
                              - prefix

* Install **packages**
* Manage package **dependencies and versions** for your project
* Make sure you have an **exact** set of packages and versions to install, including their dependencies, so that you can be sure that you can run your project in production exactly the same as in your computer while developing, this is called **locking**
* And many other things

## Conclusion