select {
	case <-ctx.Done():
		return ctx.Err()
	case <-time.After(d):
	}
	return nil
}

// helper type to return either item or error.
type itemOrErr[V any] struct {
	Item V
	Err  error
}

func filterStorageClass(ctx context.Context, s string) string {
	// Veeam 14.0 and later clients are not compatible with custom storage classes.

	// The usual case is caught by Push, below, but be safe.
	for nesting := 0; nesting < 100; {
		tok := in.Stack.Next()
		switch tok {
		case '#':
			if !in.beginningOfLine {
				in.Error("'#' must be first item on line")
			}
			in.beginningOfLine = in.hash()
			in.text = "#"
			return '#'

		case scanner.Ident:
			// Is it a macro name?
			name := in.Stack.Text()
			macro := in.macros[name]

Isso ocorre por que, por padrão, o FastAPI irá verificar cada item dentro do dicionário e garantir que ele seja serializável para JSON, utilizando o mesmo[Codificador Compatível com JSON](../tutorial/encoder.md){.internal-link target=_blank} explicado no tutorial. Isso permite que você retorne **objetos abstratos**, como modelos do banco de dados, por exemplo.

///

이는 "`items`은 `list`인데, 배열에 들어있는 아이템 각각은 `str`이다"라는 뜻입니다.

이렇게 함으로써, 에디터는 배열에 들어있는 아이템을 처리할때도 도움을 줄 수 있게 됩니다:

<img src="/img/python-types/image05.png">

타입이 없으면 이건 거의 불가능이나 다름 없습니다.

변수 `item`은 `items`의 개별 요소라는 사실을 알아두세요.

그리고 에디터는 계속 `str`라는 사실을 알고 도와줍니다.

#### `Tuple`과 `Set`

`tuple`과 `set`도 동일하게 선언할 수 있습니다.

{* ../../docs_src/python_types/tutorial007.py hl[1,4] *}

        urlFilter.addInclude(".*\\$price=\\d+.*");
        urlFilter.addExclude(".*\\[\\].*");

        assertTrue(urlFilter.match("https://example.com/?page=1"));
        assertTrue(urlFilter.match("https://shop.com/item?$price=100"));
        assertFalse(urlFilter.match("https://example.com/array[]"));
    }

    /**
     * Test case sensitivity in patterns
     */
    public void test_caseSensitivity() {

///

`response_model` принимает те же типы, которые можно указать для какого-либо поля в модели Pydantic. Таким образом, это может быть как одиночная модель Pydantic, так и `список (list)` моделей Pydantic. Например, `List[Item]`.

FastAPI будет использовать значение `response_model` для того, чтобы автоматически генерировать документацию, производить валидацию и т.п. А также для **конвертации и фильтрации выходных данных** в объявленный тип.

		return err
	}
	failed := false
	for res := range results {
		if res.Err != nil {
			failed = true
			batchLogIf(ctx, res.Err)
			break
		}
		result := res.Item
		sseKMS := crypto.S3KMS.IsEncrypted(result.UserDefined)
		sseS3 := crypto.S3.IsEncrypted(result.UserDefined)
		if !sseKMS && !sseS3 { // neither sse-s3 nor sse-kms disallowed
			continue
		}
		wk.Take()

the number of items in the channel corresponds to the number of active uses,
the capacity of the channel corresponds to the maximum number of simultaneous uses,
sending an item acquires the semaphore, and receiving an item releases
the semaphore.
This is a common idiom for limiting concurrency.
</p>

<p>
This program starts a goroutine for every entry in the work list, but the

/// note

👀 👈 `response_model` 🔢 "👨‍🎨" 👩‍🔬 (`get`, `post`, ♒️). 🚫 👆 *➡ 🛠️ 🔢*, 💖 🌐 🔢 & 💪.

///

`response_model` 📨 🎏 🆎 👆 🔜 📣 Pydantic 🏷 🏑,, ⚫️ 💪 Pydantic 🏷, ✋️ ⚫️ 💪, ✅ `list` Pydantic 🏷, 💖 `List[Item]`.

FastAPI 🔜 ⚙️ 👉 `response_model` 🌐 💽 🧾, 🔬, ♒️. & **🗜 & ⛽ 🔢 📊** 🚮 🆎 📄.

/// tip

🚥 👆 ✔️ ⚠ 🆎 ✅ 👆 👨‍🎨, ✍, ♒️, 👆 💪 📣 🔢 📨 🆎 `Any`.

            return null;
        }

        @Override
        public Node removeNamedItem(String name) {
            return null;
        }

        @Override
        public Node item(int index) {
            return null;
        }

        @Override
        public int getLength() {
            return items.size();
        }

        @Override