//// tab | Python 3.10+

```Python hl_lines="8  105"
{!> ../../docs_src/security/tutorial005_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="8  105"
{!> ../../docs_src/security/tutorial005_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="8  106"
{!> ../../docs_src/security/tutorial005_an.py!}
```

////

该依赖项函数本身不需要作用域，因此，可以使用 `Depends` 和 `oauth2_scheme`。不需要指定安全作用域时，不必使用 `Security`。

此处还声明了从 `fastapin.security` 导入的 `SecurityScopes` 类型的特殊参数。

`SecuriScopes` 类与 `Request` 类似（`Request` 用于直接提取请求对象）。

```Python hl_lines="8  105"
{!../../docs_src/security/tutorial005.py!}
```

## 使用 `scopes`

参数 `security_scopes` 的类型是 `SecurityScopes`。

它的属性 `scopes`  是作用域列表，所有依赖项都把它作为子依赖项。也就是说所有**依赖**……这听起来有些绕，后文会有解释。

👥 📣 🎁 🔢 🆎 `SecurityScopes`, 🗄 ⚪️➡️ `fastapi.security`.

👉 `SecurityScopes` 🎓 🎏 `Request` (`Request` ⚙️ 🤚 📨 🎚 🔗).

```Python hl_lines="8  105"
{!../../docs_src/security/tutorial005.py!}
```

## ⚙️ `scopes`

🔢 `security_scopes` 🔜 🆎 `SecurityScopes`.

```

////

//// tab | Python 3.10+ non-Annotated

/// tip | Dica

Prefira utilizar a versão `Annotated` se possível.

///

```Python hl_lines="8  105"
{!> ../../docs_src/security/tutorial005_py310.py!}
```

////

//// tab | Python 3.9+ non-Annotated

/// tip | Dica

Prefira utilizar a versão `Annotated` se possível.

///

minio-1.0.5.tar minio/Chart.yaml apiVersion: v1 appVersion: RELEASE.2021-08-25T00-41-18Z description: Multi-Cloud Object Storage home: https://min.io icon: https://min.io/resources/img/logo/MINIO_wordmark.png keywords: - storage - object-storage - S3 maintainers: - email: ******@****.*** name: MinIO, Inc name: minio sources: - https://github.com/minio/minio version: 1.0.5 minio/values.yaml ## Provide a name in place of minio for `app:` labels ## nameOverride: "" ## Provide a name to substitute for...

        "price": 50.2,
        "tax": 10.5,
        "tags": [],
    }


@needs_py39
def test_put(client: TestClient):
    response = client.put(
        "/items/bar", json={"name": "Barz", "price": 3, "description": None}
    )
    assert response.json() == {
        "name": "Barz",
        "description": None,
        "price": 3,
        "tax": 10.5,
        "tags": [],
    }


@needs_py39

        "price": 50.2,
        "tax": 10.5,
        "tags": [],
    }


def test_put(client: TestClient):
    response = client.put(
        "/items/bar", json={"name": "Barz", "price": 3, "description": None}
    )
    assert response.json() == {
        "name": "Barz",
        "description": None,
        "price": 3,
        "tax": 10.5,
        "tags": [],
    }


@needs_pydanticv2

        "price": 50.2,
        "tax": 10.5,
        "tags": [],
    }


@needs_py310
def test_put(client: TestClient):
    response = client.put(
        "/items/bar", json={"name": "Barz", "price": 3, "description": None}
    )
    assert response.json() == {
        "name": "Barz",
        "description": None,
        "price": 3,
        "tax": 10.5,
        "tags": [],
    }


@needs_py310

        }

        suggestor.init($(this), setting);

        $(this).keydown( function(e){
            if( ((e.keyCode >= 48) && (e.keyCode <= 90))
                || ((e.keyCode >= 96) && (e.keyCode <= 105))
                || ((e.keyCode >= 186) && (e.keyCode <= 226))
                || e.keyCode == 8
                || e.keyCode == 32
                || e.keyCode == 46
            ) {
                started = true;

{!> ../../docs_src/response_model/tutorial004.py!}
```

////

* `description: Union[str, None] = None` (or `str | None = None` in Python 3.10) has a default of `None`.
* `tax: float = 10.5` has a default of `10.5`.
* `tags: List[str] = []` has a default of an empty list: `[]`.

but you might want to omit them from the result if they were not actually stored.