"1fb13754-90be-42cb-bc7f-9b9211494e92",
                "3018965c-3330-402a-8075-caa7613ec4fa",
                "7ecc912b-4938-4411-895e-8ca7cf22ce02",
                "6580ada2-4764-45a2-9789-98217d7cf5b6",
                "be9d0de4-4ba7-4fdd-8f76-cb579168c549",
                "7a8236d6-6bec-4176-b6a1-f869c02183c3",
                "089f4195-881c-4f9e-8bc1-124531dee977",

🔜 ➡️ ⚙️ 🚙 🚚 **FastAPI** 🍵 👉.

### `OAuth2PasswordRequestForm`

🥇, 🗄 `OAuth2PasswordRequestForm`, & ⚙️ ⚫️ 🔗 ⏮️ `Depends` *➡ 🛠️* `/token`:

//// tab | 🐍 3️⃣.6️⃣ & 🔛

```Python hl_lines="4  76"
{!> ../../docs_src/security/tutorial003.py!}
```

////

//// tab | 🐍 3️⃣.1️⃣0️⃣ & 🔛

```Python hl_lines="2  74"
{!> ../../docs_src/security/tutorial003_py310.py!}
```

////

{!> ../../docs_src/security/tutorial003_py310.py!}
```

////

//// tab | Python 3.8+ non-Annotated

/// tip

Prefer to use the `Annotated` version if possible.

///

```Python hl_lines="4  76"
{!> ../../docs_src/security/tutorial003.py!}
```

////

`OAuth2PasswordRequestForm` is a class dependency that declares a form body with:

* The `username`.
* The `password`.

```

////

//// tab | Python 3.8+ nicht annotiert

/// tip | "Tipp"

Bevorzugen Sie die `Annotated`-Version, falls möglich.

///

```Python hl_lines="4  76"
{!> ../../docs_src/security/tutorial003.py!}
```

////

`OAuth2PasswordRequestForm` ist eine Klassenabhängigkeit, die einen Formularbody deklariert mit:

* Dem `username`.
* Dem `password`.

                    "name": "default"
                  }
                ]
              }
            ],
            "validate_clusters": false
          },
          "last_updated": "2023-12-26T05:57:43.476Z"
        }
      ]
    },
    {
      "@type": "type.googleapis.com/envoy.admin.v3.SecretsConfigDump",
      "dynamic_active_secrets": [
        {
          "name": "default",

///

## 获取 `username` 和 `password` 的代码

接下来，使用 **FastAPI** 工具获取用户名与密码。

### `OAuth2PasswordRequestForm`

首先，导入 `OAuth2PasswordRequestForm`，然后，在 `/token` *路径操作* 中，用 `Depends` 把该类作为依赖项。

```Python hl_lines="4  76"
{!../../docs_src/security/tutorial003.py!}
```

`OAuth2PasswordRequestForm` 是用以下几项内容声明表单请求体的类依赖项：

* `username`
* `password`
* 可选的 `scope` 字段，由多个空格分隔的字符串组成的长字符串
* 可选的 `grant_type`

/// tip | "提示"

    assertEvents(
        "R0.00, R1.75, R1.26, R0.76, R0.30, R0.20, R0.20, R0.20", // #1
        "U4.20", // #2
        "R0.00, R1.75, R1.26", // #3, after that the rate changes
        "R0.76", // #4, this is what the throttling would be with the old rate
        "R0.20, R0.10, R0.10, R0.10", // #5
        "U4.10", // #6
        "R0.00, R0.94, R0.81, R0.69, R0.57, R0.44, R0.32", // #7

    assertEvents(
        "R0.00, R1.75, R1.26, R0.76, R0.30, R0.20, R0.20, R0.20", // #1
        "U4.20", // #2
        "R0.00, R1.75, R1.26", // #3, after that the rate changes
        "R0.76", // #4, this is what the throttling would be with the old rate
        "R0.20, R0.10, R0.10, R0.10", // #5
        "U4.10", // #6
        "R0.00, R0.94, R0.81, R0.69, R0.57, R0.44, R0.32", // #7

{!> ../../docs_src/security/tutorial003_py310.py!}
```

////

//// tab | Python 3.8+ non-Annotated

/// tip | Dica

Prefira usar a versão `Annotated`, se possível.

///

```Python hl_lines="4  76"
{!> ../../docs_src/security/tutorial003.py!}
```

////

`OAuth2PasswordRequestForm` é uma dependência de classe que declara um corpo de formulário com:

* O `username`.
* A `password`.

    X748,
    X749,
    X750,
    X751,
    X752,
    X753,
    X754,
    X755,
    X756,
    X757,
    X758,
    X759,
    X760,
    X761,
    X762,
    X763,
    X764,
    X765,
    X766,
    X767,
    X768,
    X769,
    X770,
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