//// 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!}

import pytest
from fastapi.testclient import TestClient

from tests.utils import needs_py39, needs_pydanticv2


@pytest.fixture(name="client")
def get_client():
    from docs_src.request_form_models.tutorial002_an_py39 import app

    client = TestClient(app)
    return client


@needs_pydanticv2
@needs_py39
def test_post_body_form(client: TestClient):

//// 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"

//// 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!}

///

Você pode utilizar a configuração de modelo do Pydantic para `proibir` qualquer campo `extra`:

//// tab | Python 3.9+

```Python hl_lines="12"
{!> ../../docs_src/request_form_models/tutorial002_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="11"
{!> ../../docs_src/request_form_models/tutorial002_an.py!}
```

////

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

/// tip

 Você pode utilizar a configuração do modelo Pydantic para `proibir` qualquer campo `extra`.


//// tab | Python 3.9+

```Python hl_lines="10"
{!> ../../docs_src/cookie_param_models/tutorial002_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="11"
{!> ../../docs_src/cookie_param_models/tutorial002_an.py!}
```

////

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

//// tab | Python 3.10+

```Python hl_lines="13  15  22  25"
{!> ../../docs_src/background_tasks/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="13  15  22  25"
{!> ../../docs_src/background_tasks/tutorial002_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="14  16  23  26"

from fastapi.testclient import TestClient
from fastapi.websockets import WebSocketDisconnect

from ...utils import needs_py39


@pytest.fixture(name="app")
def get_app():
    from docs_src.websockets.tutorial002_an_py39 import app

    return app


@needs_py39
def test_main(app: FastAPI):
    client = TestClient(app)
    response = client.get("/")
    assert response.status_code == 200, response.text

//// tab | Python 3.9+

```Python hl_lines="10"
{!> ../../docs_src/path_params_numeric_validations/tutorial002_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="9"
{!> ../../docs_src/path_params_numeric_validations/tutorial002_an.py!}
```

////

        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]),