它非常簡單直觀。設計上易於擴充，且元件化。

它具備：

* 令人印象深刻的效能。
* WebSocket 支援。
* 行程內（in-process）背景任務。
* 啟動與關閉事件。
* 建立在 HTTPX 上的測試用戶端。
* CORS、GZip、靜態檔案、串流回應。
* Session 與 Cookie 支援。
* 100% 測試涵蓋率。
* 100% 型別註解的程式碼庫。
* 幾乎沒有硬性相依。

Starlette 目前是測試中最快的 Python 框架。僅次於 Uvicorn（它不是框架，而是伺服器）。

Starlette 提供所有網頁微框架的基礎功能。

但它不提供自動的資料驗證、序列化或文件。

		return err
	}

	// attempt to read just the version key in the state file to ensure we
	// are reading a compatible version.
	var ver struct {
		Version int `json:"version"`
	}
	err = json.Unmarshal(buf, &ver)
	if err != nil {
		return err
	}
	if ver.Version != srStateFormatVersion1 {
		return fmt.Errorf("Unexpected ClusterRepl state version: %d", ver.Version)
	}

	var sdata srStateData

                SmbSessionImpl session = h.getSession();

                // Enable lease support if available, with fallback for compatibility
                boolean leasesAdded = false;
                if (config.isUseLeases() && h.isSMB3()) {
                    try {
                        LeaseManager leaseManager = session.getLeaseManager();
                        if (leaseManager != null) {

                call: Call,
                connection: Connection,
              ) {
                val sslSocket = connection.socket() as SSLSocket

                sessionIds.add(
                  sslSocket.session.id
                    .toByteString()
                    .hex(),
                )
              }
            },
          ),
        ).build()

	if len(users6) != 1 {
		t.Errorf("should find one users using left join with conditions, but got %v", len(users6))
	}

	dryDB := DB.Session(&gorm.Session{DryRun: true})

</div>

Dosyaları ve testleri otomatik olarak bulur, çalıştırır ve sonuçları size raporlar.

Testleri şu şekilde çalıştırın:

<div class="termy">

```console
$ pytest

================ test session starts ================
platform linux -- Python 3.6.9, pytest-5.3.5, py-1.8.1, pluggy-0.13.1
rootdir: /home/user/code/superawesome-cli/app
plugins: forked-1.1.3, xdist-1.31.0, cov-2.8.1
collected 6 items

---> 100%

```Python
async def get_database():
    with Session() as session:
        try:
            yield session
        except HTTPException:
            session.rollback()
            raise
        finally:
            session.close()
```

Это могло бы выглядеть так:

{* ../../docs_src/dependencies/tutorial013_an_py310.py *}

Код после `yield`, автоматическое закрытие `Session` в:

{* ../../docs_src/dependencies/tutorial013_an_py310.py ln[19:21] *}

…будет выполнен после того, как ответ закончит отправку медленных данных:

		if requestUser != svcAccount.ParentUser {
			writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAccessDenied), r.URL)
			return
		}
	}

	// if session policy is nil or empty, then it is implied policy
	impliedPolicy := sessionPolicy == nil || (sessionPolicy.Version == "" && len(sessionPolicy.Statements) == 0)

	var svcAccountPolicy policy.Policy

	if !impliedPolicy {
		svcAccountPolicy = *sessionPolicy
	} else {

    }

    private ModelResolver newModelResolver() throws ComponentLookupException, MalformedURLException {
        return new DefaultModelResolver(
                this.session,
                null,
                this.getClass().getName(),
                getContainer().lookup(ArtifactResolver.class),
                getContainer().lookup(VersionRangeResolver.class),