):
        return True
    return False


async def _extract_form_body(
    body_fields: List[ModelField],
    received_body: FormData,
) -> Dict[str, Any]:
    values = {}
    first_field = body_fields[0]
    first_field_info = first_field.field_info

    for field in body_fields:
        value = _get_multidict_value(field, received_body)
        if (

First, you have to import it:

{* ../../docs_src/body_fields/tutorial001_an_py310.py hl[4] *}


/// warning

Notice that `Field` is imported directly from `pydantic`, not from `fastapi` as are all the rest (`Query`, `Path`, `Body`, etc).

///

## Declare model attributes

You can then use `Field` with model attributes:

{* ../../docs_src/body_fields/tutorial001_an_py310.py hl[11:14] *}