response = client.get("/items/")
    assert response.status_code == 200, response.text
    assert response.json() == [
        {
            "name": "Portal Gun",
            "description": "Device to travel through the multi-rick-verse",
        },
        {"name": "Plumbus", "description": None},
    ]


@needs_pydanticv2
def test_openapi_schema(client: TestClient) -> None:
    response = client.get("/openapi.json")

        # When running build_all(), that function already removes site_path.
        # All this is only relevant locally, on GitHub Actions all this is done through
        # artifacts and multiple workflows, so it doesn't matter if directories are
        # removed or not.
    else:
        dist_path = site_path / lang
        shutil.rmtree(dist_path, ignore_errors=True)

@app.post("/items/")
def create_item(item: Item):
    return item


@app.get("/items/")
def read_items() -> list[Item]:
    return [
        Item(
            name="Portal Gun",
            description="Device to travel through the multi-rick-verse",
        ),
        Item(name="Plumbus"),

@app.post("/items/")
def create_item(item: Item):
    return item


@app.get("/items/")
def read_items() -> List[Item]:
    return [
        Item(
            name="Portal Gun",
            description="Device to travel through the multi-rick-verse",
        ),
        Item(name="Plumbus"),

### Model for Output Response Data

If you interact with the docs and check the response, even though the code didn't add anything in one of the `description` fields, the JSON response contains the default value (`null`):

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image02.png">
</div>

Nevertheless, as this would mean waiting for the response to travel through the network while unnecessarily holding a resource in a dependency with yield (for example a database connection), this was changed in FastAPI 0.106.0.

!!! tip

Now use the `SessionLocal` class we created in the `sql_app/database.py` file to create a dependency.

We need to have an independent database session/connection (`SessionLocal`) per request, use the same session through all the request and then close it after the request is finished.

And then a new session will be created for the next request.

    response = client.get("/items/")
    assert response.status_code == 200, response.text
    assert response.json() == [
        {
            "name": "Portal Gun",
            "description": "Device to travel through the multi-rick-verse",
        },
        {"name": "Plumbus", "description": None},
    ]


@needs_pydanticv2
def test_openapi_schema(client: TestClient) -> None:
    response = client.get("/openapi.json")

    response = client.get("/items/")
    assert response.status_code == 200, response.text
    assert response.json() == [
        {
            "name": "Portal Gun",
            "description": "Device to travel through the multi-rick-verse",
        },
        {"name": "Plumbus", "description": None},
    ]


@needs_py39
@needs_pydanticv2
def test_openapi_schema(client: TestClient) -> None:

👈 🚫 🚮 🙆 ➕ 💂‍♂ 👆 🛠️, *➡ 🛠️* 🔜 💪 🌐❔ 👫.

🚥 📤 💂‍♂ ⚠ 👆 📟, ⚫️ 🔜 🔀.

🕵‍♂ 🧾 ⚒ ⚫️ 🌅 ⚠ 🤔 ❔ 🔗 ⏮️ 👆 🛠️, &amp; 💪 ⚒ ⚫️ 🌅 ⚠ 👆 ℹ ⚫️ 🏭. ⚫️ 💪 🤔 🎯 📨 <a href="https://en.wikipedia.org/wiki/Security_through_obscurity" class="external-link" target="_blank">💂‍♂ 🔘 🌌</a>.

🚥 👆 💚 🔐 👆 🛠️, 📤 📚 👍 👜 👆 💪, 🖼:

* ⚒ 💭 👆 ✔️ 👍 🔬 Pydantic 🏷 👆 📨 💪 &amp; 📨.
* 🔗 🙆 ✔ ✔ &amp; 🔑 ⚙️ 🔗.
* 🙅 🏪 🔢 🔐, 🕴 🔐#️⃣.