```

would result in something equivalent to:

```Python
UserInDB(
    username="john",
    password="secret",
    email="******@****.***",
    full_name=None,
)
```

Or more exactly, using `user_dict` directly, with whatever contents it might have in the future:

```Python
UserInDB(
    username = user_dict["username"],
    password = user_dict["password"],
    email = user_dict["email"],

        return {"msg": "Create an account first"}
    return {"username": credentials.username, "password": credentials.password}


client = TestClient(app)


def test_security_http_basic():
    response = client.get("/users/me", auth=("john", "secret"))
    assert response.status_code == 200, response.text
    assert response.json() == {"username": "john", "password": "secret"}

            false, false, "Long", 0, 0, null, null, false, null, null, null, null, null, false);
    protected final ColumnInfo _columnUsername = cci("username", "username", null, null, String.class, "username", null, false, false,
            false, "keyword", 0, 0, null, null, false, null, null, null, null, null, false);

                + ", protocolScheme=" + protocolScheme + ", updatedBy=" + updatedBy + ", updatedTime=" + updatedTime + ", username="
                + username + ", docMeta=" + docMeta + "]";
    }

app = FastAPI()

security = HTTPBasic()


@app.get("/users/me")
def read_current_user(credentials: Annotated[HTTPBasicCredentials, Depends(security)]):

Para manejar eso, primero convertimos el `username` y `password` a `bytes` codificándolos con UTF-8.

Luego podemos usar `secrets.compare_digest()` para asegurar que `credentials.username` es `"stanleyjobson"`, y que `credentials.password` es `"swordfish"`.

{* ../../docs_src/security/tutorial007_an_py39.py hl[1,12:24] *}

Esto sería similar a:

```Python

                "\"-Porg.gradle.performance.branchName=%teamcity.build.branch%\"",
                "\"-Porg.gradle.performance.db.url=%performance.db.url%\"",
                "\"-Porg.gradle.performance.db.username=%performance.db.username%\"",
                "-DenableTestDistribution=%enableTestDistribution%",
                "-Dorg.gradle.workers.max=%maxParallelForks%",
                "-PmaxParallelForks=%maxParallelForks%",

        try {
            userService.store(entity);
            saveInfo(messages -> messages.addSuccessCrudCreateCrudTable(GLOBAL));
        } catch (final Exception e) {
            logger.warn("Failed to create user: username={}, error={}", body.name, e.getMessage(), e);
            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateCrudTable(GLOBAL, buildThrowableMessage(e)));
        }

@app.get("/items/")
async def read_items():
    return [{"item": "Portal Gun"}, {"item": "Plumbus"}]


@app.get("/users/")
async def read_users():

OAuth2 的设计目标是为了让后端或 API 独立于服务器验证用户身份。

但在本例中，**FastAPI** 应用会处理 API 与身份验证。

下面，我们来看一下简化的运行流程：

- 用户在前端输入 `username` 与`password`，并点击**回车**
- （用户浏览器中运行的）前端把 `username` 与`password` 发送至 API 中指定的 URL（使用 `tokenUrl="token"` 声明）
- API 检查 `username` 与`password`，并用令牌（`Token`） 响应（暂未实现此功能）：
  - 令牌只是用于验证用户的字符串
  - 一般来说，令牌会在一段时间后过期
    - 过时后，用户要再次登录
    - 这样一来，就算令牌被人窃取，风险也较低。因为它与永久密钥不同，**在绝大多数情况下**不会长期有效