// will set all product's price to last product's price + 10
	for idx, value := range []int64{410, 410, 410} {
		if products[idx].Price != value {
			t.Errorf("invalid price for product #%v, expects: %v, got %v", idx, value, products[idx].Price)
		}
	}

	products2 := []Product3{
		{Name: "Product-1", Price: 100},
		{Name: "Product-2", Price: 200},
		{Name: "Product-3", Price: 300},
	}

	DB.Create(&products2)

            "price": 35.4,
            "tax": 3.2,
            "tags": IsList("foo", "bar", check_order=False),
            "image": {"url": "http://example.com/image.png", "name": "example image"},
        },
    }


def test_put_only_required(client: TestClient):
    response = client.put(
        "/items/5",
        json={"name": "Foo", "price": 35.4},
    )

                        "type": "object",
                        "properties": {
                            "name": {"title": "Name", "type": "string"},
                            "price": {
                                "title": "Price",
                                "anyOf": [{"type": "number"}, {"type": "null"}],
                            },
                        },
                    },

    public void test_evaluate_withSpecialCharacters() {
        String template = "Price: $${price} (with ${discount}% off)";
        Map<String, Object> paramMap = new HashMap<>();
        paramMap.put("price", "100");
        paramMap.put("discount", "20");

        Object result = scriptEngine.evaluate(template, paramMap);
        assertEquals("Price: $100 (with 20% off)", result);
    }

So, if you send a request to that *path operation* for the item with ID `foo`, the response (not including default values) will be:

```JSON
{
    "name": "Foo",
    "price": 50.2
}
```

/// info

You can also use:

* `response_model_exclude_defaults=True`
* `response_model_exclude_none=True`

<img src="/img/tutorial/generate-clients/image02.png">

送信するペイロードにも補完が適用されます:

<img src="/img/tutorial/generate-clients/image03.png">

/// tip | 豆知識

FastAPI アプリの `Item` モデルで定義した `name` と `price` に補完が効いている点に注目してください。

///

送信データに対するインラインエラーも表示されます:

<img src="/img/tutorial/generate-clients/image04.png">

レスポンスオブジェクトにも補完があります:

<img src="/img/tutorial/generate-clients/image05.png">

```Python hl_lines="2  7-10 23-25"
from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    price: float
    is_offer: bool | None = None


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: str | None = None):

non-permissive terms added in accord with section 7 apply to the code;
keep intact all notices of the absence of any warranty; and give all
recipients a copy of this License along with the Program.

  You may charge any price or no price for each copy that you convey,
and you may offer support or warranty protection for a fee.

  5. Conveying Modified Source Versions.

  You may convey a work based on the Program, or the modifications to

<img src="/img/tutorial/generate-clients/image02.png">

보낼 페이로드에 대해서도 자동 완성이 제공됩니다:

<img src="/img/tutorial/generate-clients/image03.png">

/// tip | 팁

`name`과 `price`에 대한 자동 완성은 FastAPI 애플리케이션에서 `Item` 모델에 정의된 내용입니다.

///

전송하는 데이터에 대해 인라인 오류도 표시됩니다:

<img src="/img/tutorial/generate-clients/image04.png">

응답 객체도 자동 완성을 제공합니다:

```Python hl_lines="2  7-10 23-25"
from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    price: float
    is_offer: bool | None = None


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: str | None = None):