//// tab | Python 3.10+

```Python hl_lines="10"
{!> ../../docs_src/header_params/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="11"
{!> ../../docs_src/header_params/tutorial002_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="12"
{!> ../../docs_src/header_params/tutorial002_an.py!}

//// tab | Python 3.10+

```Python hl_lines="10"
{!> ../../docs_src/header_params/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="11"
{!> ../../docs_src/header_params/tutorial002_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="12"
{!> ../../docs_src/header_params/tutorial002_an.py!}

//// tab | Python 3.10+

```Python hl_lines="10"
{!> ../../docs_src/header_params/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="11"
{!> ../../docs_src/header_params/tutorial002_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="12"
{!> ../../docs_src/header_params/tutorial002_an.py!}

//// tab | Python 3.10+

In Python 3.9 or above, `Annotated` is part of the standard library, so you can import it from `typing`.

```Python hl_lines="1  3"
{!> ../../docs_src/query_params_str_validations/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.8+

In versions of Python below Python 3.9 you import `Annotated` from `typing_extensions`.

It will already be installed with FastAPI.

//// tab | Python 3.10+

```Python hl_lines="10"
{!> ../../docs_src/header_params/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="11"
{!> ../../docs_src/header_params/tutorial002_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="12"
{!> ../../docs_src/header_params/tutorial002_an.py!}

//// tab | Python 3.10+

```Python hl_lines="10"
{!> ../../docs_src/query_param_models/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="9"
{!> ../../docs_src/query_param_models/tutorial002_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="11"

import pytest
from dirty_equals import IsDict
from fastapi.testclient import TestClient

from ...utils import needs_py310


@pytest.fixture(name="client")
def get_client():
    from docs_src.header_params.tutorial002_an_py310 import app

    client = TestClient(app)
    return client


@needs_py310
@pytest.mark.parametrize(
    "path,headers,expected_status,expected_response",
    [

//// tab | Python 3.10+

```Python hl_lines="10"
{!> ../../docs_src/query_param_models/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="9"
{!> ../../docs_src/query_param_models/tutorial002_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="11"

        pytest.param("tutorial002_py310", marks=[needs_py310, needs_pydanticv2]),
        pytest.param("tutorial002_an", marks=needs_pydanticv2),
        pytest.param("tutorial002_an_py39", marks=[needs_py39, needs_pydanticv2]),
        pytest.param("tutorial002_an_py310", marks=[needs_py310, needs_pydanticv2]),
        pytest.param("tutorial002_pv1", marks=[needs_pydanticv1, needs_pydanticv1]),

В Python 3.9 или выше, `Annotated` является частью стандартной библиотеки, таким образом вы можете импортировать его из `typing`.

```Python hl_lines="1  3"
{!> ../../docs_src/query_params_str_validations/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.8+

В версиях Python ниже Python 3.9 `Annotation` импортируется из `typing_extensions`.

Эта библиотека будет установлена вместе с FastAPI.