* unprivileged user may return a resource accessible only to a privileged user making a similar
   * call. To prevent this problem, create a key object that includes all values that affect the
   * result of the query. Or use {@code LoadingCache.get(K)}, which lacks the ability to refer to
   * state other than that in the key.
   *
   * <p><b>Warning:</b> as with {@link CacheLoader#load}, {@code loader} <b>must not</b> return

위 예제에서 입력 모델은 Pydantic v1 모델이고, 출력 모델(`response_model=ItemV2`로 정의됨)은 Pydantic v2 모델입니다.

### Pydantic v1 파라미터 { #pydantic-v1-parameters }

Pydantic v1 모델과 함께 `Body`, `Query`, `Form` 등 파라미터용 FastAPI 전용 도구 일부를 사용해야 한다면, Pydantic v2로의 마이그레이션을 마칠 때까지 `fastapi.temp_pydantic_v1_params`에서 import할 수 있습니다:

{* ../../docs_src/pydantic_v1_in_v2/tutorial004_an_py310.py hl[4,18] *}

{* ../../docs_src/request_files/tutorial001_an_py310.py hl[9] *}

/// info | Informação

`File` é uma classe que herda diretamente de `Form`.

Mas lembre-se que quando você importa `Query`, `Path`, `File` e outros de `fastapi`, eles são, na verdade, funções que retornam classes especiais.

///

/// tip | Dica

                        log.trace("Retrieved size info in additional query: {}", this.size);
                    }
                } catch (CIFSException e) {
                    // Size query failed, but we have basic info - continue
                    log.trace("Size query failed, continuing with basic info", e);
                }
            }

            return info;

    /**
     * Function code to request resilient handle for network failures
     */
    public static final int FSCTL_LRM_REQUEST_RESILENCY = 0x001401D4;
    /**
     * Function code to query network interface information
     */
    public static final int FSCTL_QUERY_NETWORK_INTERFACE_INFO = 0x001401FC;
    /**
     * Function code to set a reparse point on a file
     */

### Paramètres Pydantic v1 { #pydantic-v1-parameters }

Si vous devez utiliser certains des outils spécifiques à FastAPI pour les paramètres comme `Body`, `Query`, `Form`, etc., avec des modèles Pydantic v1, vous pouvez les importer depuis `fastapi.temp_pydantic_v1_params` le temps de terminer la migration vers Pydantic v2 :

在上面的示例中，输入模型是 Pydantic v1 模型，输出模型（在 `response_model=ItemV2` 中定义）是 Pydantic v2 模型。

### Pydantic v1 参数 { #pydantic-v1-parameters }

如果你需要在 Pydantic v1 模型中使用 FastAPI 特有的参数工具，如 `Body`、`Query`、`Form` 等，在完成向 Pydantic v2 的迁移前，可以从 `fastapi.temp_pydantic_v1_params` 导入它们：

{* ../../docs_src/pydantic_v1_in_v2/tutorial004_an_py310.py hl[4,18] *}

### 分步迁移 { #migrate-in-steps }

/// tip | 提示

					Token: r.Form.Get("id_token"),
				}, nil
			}
		} else {
			getWebTokenExpiry = func() (*credentials.WebIdentityToken, error) {
				oauth2Token, err := config.Exchange(ctx, r.URL.Query().Get("code"))
				if err != nil {
					return nil, err
				}
				if !oauth2Token.Valid() {
					return nil, errors.New("invalid token")
				}

				return &credentials.WebIdentityToken{

 * class is symmetric with {@link java.net.InetAddress}.
 *
 *
 *  * <b>About NetBIOS:</b> The NetBIOS name
 * service is a dynamic distributed service that allows hosts to resolve
 * names by broadcasting a query, directing queries to a server such as
 * Samba or WINS. NetBIOS is currently the primary networking layer for
 * providing name service, datagram service, and session service to the

{* ../../docs_src/background_tasks/tutorial002_an_py310.py hl[13,15,22,25] *}

Neste exemplo, as mensagens serão escritas no arquivo `log.txt` *após* o envio da resposta.

Se houver uma query na request, ela será registrada em uma tarefa em segundo plano.

E então outra tarefa em segundo plano gerada na *função de operação de rota* escreverá uma mensagem usando o parâmetro de path `email`.