# Модели форм { #form-models }

Вы можете использовать **Pydantic-модели** для объявления **полей формы** в FastAPI.

/// info | Дополнительная информация

Чтобы использовать формы, сначала установите [`python-multipart`](https://github.com/Kludex/python-multipart).

Убедитесь, что вы создали и активировали [виртуальное окружение](../virtual-environments.md), а затем установите пакет, например:

```console
$ pip install python-multipart
```

                totalAllocated.incrementAndGet();
            } catch (IOException e) {
                log.warn("Failed to pre-allocate receive buffer", e);
            }
        }

        log.info("Initialized RDMA buffer pool with {} send and {} receive buffers", availableSendRegions.size(),
                availableReceiveRegions.size());
    }

    /**
     * Get a send region from the pool or allocate a new one

Con él, puedes usar [pytest](https://docs.pytest.org/) directamente con **FastAPI**.

## Usando `TestClient` { #using-testclient }

/// info | Información

Para usar `TestClient`, primero instala [`httpx`](https://www.python-httpx.org).

Asegúrate de crear un [entorno virtual](../virtual-environments.md), activarlo y luego instalarlo, por ejemplo:

```console

# 串流 JSON Lines { #stream-json-lines }

當你有一連串資料想以「**串流**」方式傳送時，可以使用 **JSON Lines**。

/// info

在 FastAPI 0.134.0 新增。

///

## 什麼是串流？ { #what-is-a-stream }

「**Streaming**」資料表示你的應用會在整個資料序列尚未完全準備好之前，就開始將資料項目傳送給用戶端。

也就是說，它會先送出第一個項目，用戶端接收並開始處理時，你的應用可能仍在產生下一個項目。

```mermaid
sequenceDiagram
    participant App
    participant Client

    App->>App: Produce Item 1
    App->>Client: Send Item 1

Используя эти инструменты, Вы можете напрямую задействовать [pytest](https://docs.pytest.org/) с **FastAPI**.

## Использование класса `TestClient` { #using-testclient }

/// info | Информация

Для использования класса `TestClient` сначала установите [`httpx`](https://www.python-httpx.org).

{* ../../docs_src/additional_responses/tutorial001_py310.py hl[18,22] *}

/// note | Not

`JSONResponse`'u doğrudan döndürmeniz gerektiğini unutmayın.

///

/// info | Bilgi

`model` anahtarı OpenAPI'nin bir parçası değildir.

**FastAPI** buradaki Pydantic model'i alır, JSON Schema'yı üretir ve doğru yere yerleştirir.

Doğru yer şurasıdır:

	defer updateOSMetrics(osMetricOpenFileDirectIO, name)(err)
	return disk.OpenFileDirectIO(name, flag, perm)
}

// Lstat captures time taken to call os.Lstat
func Lstat(name string) (info os.FileInfo, err error) {
	defer updateOSMetrics(osMetricLstat, name)(err)
	return os.Lstat(name)
}

// Remove captures time taken to call os.Remove
func Remove(deletePath string) (err error) {

     *       module path, but is also compatible with placement on the class path. Compatibility can
     *       be achieved, for example, by repeating in the {@code META-INF/services/} directory the services
     *       that are declared in the {@code module-info.class} file. In that case, the path type can be chosen
     *       by the plugin.</li>

     */
    public void storeInfo(final List<CrawlingInfoParam> crawlingInfoParamList) {
        if (crawlingInfoParamList == null) {
            throw new FessSystemException("Crawling Session Info is null.");
        }

        final long now = ComponentUtil.getSystemHelper().getCurrentTimeAsLong();
        for (final CrawlingInfoParam crawlingInfoParam : crawlingInfoParamList) {

                }
            }
        }
    }

    /**
     * Creates search conditions for user info queries based on pager criteria.
     *
     * @param pager The search log pager containing filter criteria
     * @param cb The user info condition bean to configure
     */
    private void createUserInfoCondition(final SearchLogPager pager, final UserInfoCB cb) {