//// 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 os
from pathlib import Path

from fastapi.testclient import TestClient

from ...utils import needs_py39


@needs_py39
def test():
    from docs_src.background_tasks.tutorial002_an_py39 import app

    client = TestClient(app)
    log = Path("log.txt")
    if log.is_file():
        os.remove(log)  # pragma: no cover
    response = client.post("/send-notification/******@****.***?q=some-query")

//// 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!}
```

////

//// tab | Python 3.10+

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

////

//// tab | Python 3.9+

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

////

//// tab | Python 3.8+

```Python hl_lines="11"

///

You can use Pydantic's model configuration to `forbid` any `extra` fields:

//// 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

//// 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!}

        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]),

///

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

//// 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"