* `https://localhost`
* `http://localhost:8080`

Même si elles sont toutes sur `localhost`, elles utilisent des protocoles ou des ports différents, ce sont donc des « origines » différentes.

## Étapes { #steps }

The same example would then look like:

{* ../../docs_src/dependencies/tutorial004_an_py310.py hl[19] *}

...and **FastAPI** will know what to do.

/// tip

If that seems more confusing than helpful, disregard it, you don't *need* it.

It is just a shortcut. Because **FastAPI** cares about helping you minimize code repetition.

        // First read
        NbtAddress result = lmhosts.getByName("TESTHOST", mockContext);
        assertNotNull(result);

        // Modify file with a delay to ensure different lastModified time
        Thread.sleep(100);
        try (FileWriter writer = new FileWriter(lmhostsFile)) {
            writer.write("192.168.1.200 NEWHOST\n");
        }

        // Should reload file and find new host

若你需要在 Pydantic v1 模型上使用 FastAPI 的參數工具（例如 `Body`、`Query`、`Form` 等），在完成遷移到 Pydantic v2 之前，可以從 `fastapi.temp_pydantic_v1_params` 匯入：

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

### 分步遷移 { #migrate-in-steps }

/// tip

先嘗試使用 `bump-pydantic`，如果測試通過且一切正常，你就能用一條指令完成遷移。✨

///

若 `bump-pydantic` 不適用於你的情境，可以利用在同一應用同時支援 Pydantic v1 與 v2 的能力，逐步完成遷移。

你可以先升級 Pydantic 到最新 v2，並將所有模型的匯入改為使用 `pydantic.v1`。

            throws PACDecodingException {
        return as(type, sequence.getObjectAt(index));
    }

    /**
     * Read a tagged object without parsing it's contents
     *
     * BC no longer seems to allow that out of the box
     *
     * @param expectTag the expected tag number
     * @param limit the maximum length limit
     * @param in the ASN.1 input stream
     * @return coded bytes of the tagged object

* `http://localhost`
* `https://localhost`
* `http://localhost:8080`

Mesmo se todos estiverem em `localhost`, eles usam diferentes protocolos ou portas, portanto, são "origens" diferentes.

## Passos { #steps }

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

### Adım Adım Geçiş { #migrate-in-steps }

/// tip | İpucu

Önce `bump-pydantic` ile deneyin; testleriniz geçerse ve bu yol çalışırsa tek komutla işi bitirmiş olursunuz. ✨

///

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

### Покрокова міграція { #migrate-in-steps }

/// tip | Порада

Спершу спробуйте `bump-pydantic`: якщо ваші тести проходять і все працює - ви впоралися однією командою. ✨

///

                }
                if (logger.isDebugEnabled()) {
                    logger.debug("Waiting threads: {}", waitingThreadNames);
                }
                ThreadUtil.sleep(systemCpuCheckInterval);
                current = getSystemCpuPercent();
            }
        } finally {
            waitingThreadNames.remove(threadName);
        }
        return true;
    }

                });
            }

            // Submit task to wipe key
            executor.submit(() -> {
                try {
                    startLatch.await();
                    Thread.sleep(10);
                    digest.secureWipeKey();
                } catch (Exception e) {
                    // Ignore
                }
            });

            // Submit more tasks that try to verify data