# Diffuser des JSON Lines { #stream-json-lines }

Vous pouvez avoir une séquence de données que vous souhaitez envoyer en « flux » ; vous pouvez le faire avec « JSON Lines ».

/// info

Ajouté dans FastAPI 0.134.0.

///

## Qu'est-ce qu'un flux ? { #what-is-a-stream }

La « diffusion en continu » de données signifie que votre application commence à envoyer des éléments de données au client sans attendre que l'ensemble de la séquence soit prêt.

З його допомогою ви можете використовувати [pytest](https://docs.pytest.org/) безпосередньо з **FastAPI**.

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

/// info | Інформація

Щоб використовувати `TestClient`, спочатку встановіть [`httpx`](https://www.python-httpx.org).

		if b.bucket != bucket {
			logger.Info("getBucket: cached bucket %s does not match this bucket %s", b.bucket, bucket)
			debug.PrintStack()
		}
		return b
	}

	m.mu.RUnlock()
	m.mu.Lock()
	defer m.mu.Unlock()
	// See if someone else fetched it while we waited for the lock.
	b, ok = m.buckets[bucket]
	if ok {
		if b.bucket != bucket {

def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/users/me": {
                    "get": {
                        "responses": {
                            "200": {

*.py[cod]
*$py.class

# C extensions
*.so

# Distribution / packaging
.Python
build/
develop-eggs/
dist/
downloads/
eggs/
.eggs/
lib/
lib64/
parts/
sdist/
var/
wheels/
*.egg-info/
.installed.cfg
*.egg
MANIFEST

# PyInstaller
#  Usually these files are written by a python script from a template
#  before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest

r-color:var(--bs-success-text-emphasis)}.list-group-item-info{--bs-list-group-color:var(--bs-info-text-emphasis);--bs-list-group-bg:var(--bs-info-bg-subtle);--bs-list-group-border-color:var(--bs-info-border-subtle);--bs-list-group-action-hover-color:var(--bs-emphasis-color);--bs-list-group-action-hover-bg:var(--bs-info-border-subtle);--bs-list-group-action-active-color:var(--bs-emphasis-color);--bs-list-group-action-active-bg:var(--bs-info-border-subtle);--bs-list-group-active-color:var(--bs-inf...

# 請求中的表單與檔案 { #request-forms-and-files }

你可以使用 `File` 與 `Form` 同時定義檔案與表單欄位。

/// info

要接收上傳的檔案與/或表單資料，請先安裝 [`python-multipart`](https://github.com/Kludex/python-multipart)。

請先建立並啟用一個 [虛擬環境](../virtual-environments.md)，然後再安裝，例如：

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

///

## 匯入 `File` 與 `Form` { #import-file-and-form }

{* ../../docs_src/request_forms_and_files/tutorial001_an_py310.py hl[3] *}

# 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
```

     *       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>

                }
            }
        }
    }

    /**
     * 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) {