Начиная с Python 3.9, `Annotated` входит в стандартную библиотеку, поэтому вы можете импортировать его из `typing`.

{* ../../docs_src/python_types/tutorial013_py39.py hl[1,4] *}

Сам Python ничего не делает с `Annotated`. А для редакторов кода и других инструментов тип по-прежнему `str`.

from typing import Annotated, Any, Callable

from annotated_doc import Doc
from starlette.background import BackgroundTasks as StarletteBackgroundTasks
from typing_extensions import ParamSpec

P = ParamSpec("P")


class BackgroundTasks(StarletteBackgroundTasks):
    """
    A collection of background tasks that will be called after a response has been
    sent to the client.

    Read more about it in the

```

////

//// tab | Python 3.10+ non-Annotated

/// tip | 팁

될 수 있으면 `Annotated` 버전 사용을 권장합나다.

///

```Python
{!> ../../docs_src/app_testing/app_b_py310/main.py!}
```

////

//// tab | Python 3.8+ non-Annotated

/// tip | 팁

될 수 있으면 `Annotated` 버전 사용을 권장합나다.

///

```Python

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * The annotated element must not be null.
 * <p>
 * Annotated fields must not be null after construction has completed.
 * <p>
 * When this annotation is applied to a method it applies to the method return value.
 *
 * @see Nullable
 * @since 4.0.0
 */

from typing import Annotated

import pytest
from fastapi import FastAPI, Query
from fastapi.exceptions import FastAPIDeprecationWarning
from fastapi.testclient import TestClient

from .utils import needs_py310


def get_client():
    app = FastAPI()
    with pytest.warns(FastAPIDeprecationWarning):

        @app.get("/items/")
        async def read_items(
            q: Annotated[str | None, Query(regex="^fixedquery$")] = None,

```

////

//// tab | Python 3.10+ non-Annotated

/// tip | Порада

Бажано використовувати версію з `Annotated`, якщо це можливо

///

```Python
{!> ../../docs_src/app_testing/app_b_py310/main.py!}
```

////

//// tab | Python 3.8+ non-Annotated

/// tip | Порада

Бажано використовувати версію з `Annotated`, якщо це можливо

///

```Python

//// tab | Python 3.9+

```Python hl_lines="1"
async def needy_dependency(fresh_value: Annotated[str, Depends(get_value, use_cache=False)]):
    return {"fresh_value": fresh_value}
```

////

//// tab | Python 3.9+ sin Anotaciones

/// tip | Consejo

Prefiere usar la versión `Annotated` si es posible.

///

```Python hl_lines="1"

//// tab | Python 3.9+

```Python hl_lines="1"
async def needy_dependency(fresh_value: Annotated[str, Depends(get_value, use_cache=False)]):
    return {"fresh_value": fresh_value}
```

////

//// tab | Python 3.9+ non-Annotated

/// tip | Dica

Utilize a versão com `Annotated` se possível.

///

```Python hl_lines="1"

Since Python 3.9, `Annotated` is a part of the standard library, so you can import it from `typing`.

{* ../../docs_src/python_types/tutorial013_py39.py hl[1,4] *}

Python itself doesn't do anything with this `Annotated`. And for editors and other tools, the type is still `str`.

 * which processes classes annotated with {@link org.apache.maven.api.di.Named} and creates an index file
 * that allows for efficient discovery of injectable components at runtime.
 * <p>
 * The generated index is stored at {@code META-INF/maven/org.apache.maven.api.di.Inject} and contains
 * the fully qualified names of all classes annotated with {@code @Named}.
 *
 * @since 4.0.0
 */