```Python
    return {"item_name": item.name, "item_id": item_id}
```

...da:

```Python
        ... "item_name": item.name ...
```

...a:

```Python
        ... "item_price": item.price ...
```

...e osserva come il tuo editor di testo autocompleterà gli attributi e sarà in grado di riconoscere i loro tipi:

![editor support](https://fastapi.tiangolo.com/img/vscode-completion.png)

    response = client.post("/items/", json={"name": "Foo", "price": 50.5})
    assert response.status_code == 200
    assert response.json() == {
        "name": "Foo",
        "price": 50.5,
        "description": None,
        "tax": None,
    }


@needs_py310
def test_post_with_str_float(client: TestClient):
    response = client.post("/items/", json={"name": "Foo", "price": "50.5"})
    assert response.status_code == 200

    response = client.post("/items/", json={"name": "Foo", "price": 50.5})
    assert response.status_code == 200
    assert response.json() == {
        "name": "Foo",
        "price": 50.5,
        "description": None,
        "tax": None,
    }


def test_post_with_str_float(client: TestClient):
    response = client.post("/items/", json={"name": "Foo", "price": "50.5"})
    assert response.status_code == 200

```Python
    return {"item_name": item.name, "item_id": item_id}
```

...de:

```Python
        ... "item_name": item.name ...
```

...para:

```Python
        ... "item_price": item.price ...
```

...e veja como seu editor irá auto-completar os atributos e saberá os tipos:

![editor support](https://fastapi.tiangolo.com/img/vscode-completion.png)

```JSON hl_lines="2"
{
    "item": {
        "name": "Foo",
        "description": "The pretender",
        "price": 42.0,
        "tax": 3.2
    }
}
```

вместо этого:

```JSON
{
    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2
}
```

## Резюме

```JSON
{
    "name": "Foo",
    "description": "An optional description",
    "price": 45.2,
    "tax": 3.5
}
```

...поскольку `description` и `tax` являются необязательными (с `None` в качестве значения по умолчанию), вот такой JSON "объект" также подходит:

```JSON
{
    "name": "Foo",
    "price": 45.2
}
```

## Объявление как параметра функции

```Python
    return {"item_name": item.name, "item_id": item_id}
```

...에서:

```Python
        ... "item_name": item.name ...
```

...으로:

```Python
        ... "item_price": item.price ...
```

...그러고 나서 여러분의 편집기가 속성과 타입을 알고 자동 완성하는지 보십시오:

![editor support](https://fastapi.tiangolo.com/img/vscode-completion.png)

試著修改以下程式碼：

```Python
    return {"item_name": item.name, "item_id": item_id}
```

從：

```Python
        ... "item_name": item.name ...
```

修改為：

```Python
        ... "item_price": item.price ...
```

然後觀察你的編輯器，會自動補全並且還知道他們的型別：

![editor support](https://fastapi.tiangolo.com/img/vscode-completion.png)

有關更多功能的完整範例，可以參考 <a href="https://fastapi.tiangolo.com/tutorial/">教學 - 使用者指南</a>。

```Python
    return {"item_name": item.name, "item_id": item_id}
```

...z:

```Python
        ... "item_name": item.name ...
```

...na:

```Python
        ... "item_price": item.price ...
```

...i zobacz jak edytor kodu automatycznie uzupełni atrybuty i będzie znał ich typy:

![editor support](https://fastapi.tiangolo.com/img/vscode-completion.png)

```Python
    return {"item_name": item.name, "item_id": item_id}
```

...из:

```Python
        ... "item_name": item.name ...
```

...в:

```Python
        ... "item_price": item.price ...
```

... и посмотрите, как ваш редактор будет автоматически заполнять атрибуты и узнавать их типы:

![editor support](https://fastapi.tiangolo.com/img/vscode-completion.png)