return user


async def get_current_active_user(
    current_user: Annotated[User, Depends(get_current_user)],
):
    if current_user.disabled:
        raise HTTPException(status_code=400, detail="Inactive user")
    return current_user


@app.post("/token")
async def login(form_data: Annotated[OAuth2PasswordRequestForm, Depends()]):
    user_dict = fake_users_db.get(form_data.username)
    if not user_dict:

async def get_current_active_user(
    current_user: Annotated[User, Depends(get_current_user)],
):
    if current_user.disabled:
        raise HTTPException(status_code=400, detail="Inactive user")
    return current_user


@app.post("/token")
async def login_for_access_token(
    form_data: Annotated[OAuth2PasswordRequestForm, Depends()],
) -> Token:

# Dependencies - `Depends()` and `Security()`

## `Depends()`

Dependencies are handled mainly with the special function `Depends()` that takes a callable.

Here is the reference for it and its parameters.

You can import it directly from `fastapi`:

```python
from fastapi import Depends
```

::: fastapi.Depends

## `Security()`

## Type annotation vs `Depends` { #type-annotation-vs-depends }

Notice how we write `CommonQueryParams` twice in the above code:

//// tab | Python 3.10+

```Python
commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
```

////

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

/// tip

        assertNotNull(result);
        assertTrue(result instanceof DefaultQueryBuilder);

        // Verify query was processed
        // Note: Field logging behavior depends on implementation
    }

    @Test
    public void test_convertPhraseQuery_singleTerm_defaultField_dismax() {
        // Test with single term in default field with boost > 1

    yield
    raise HTTPException(status_code=503, detail="Exception after yield")


SessionFuncDep = Annotated[Session, Depends(dep_session, scope="function")]
SessionRequestDep = Annotated[Session, Depends(dep_session, scope="request")]
SessionDefaultDep = Annotated[Session, Depends(dep_session)]


class NamedSession:
    def __init__(self, name: str = "default") -> None:
        self.name = name

commons: Annotated[CommonQueryParams, Depends()]
```

////

//// tab | Python 3.10+ 非 Annotated

/// tip

如有可能，優先使用 `Annotated` 版本。

///

```Python
commons: CommonQueryParams = Depends()
```

////

你把相依性宣告為參數的型別，並使用不帶任何參數的 `Depends()`，而不用在 `Depends(CommonQueryParams)` 裡「再」寫一次整個類別。

整個範例就會變成：

{* ../../docs_src/dependencies/tutorial004_an_py310.py hl[19] *}

    # Get Depends from type annotation
    if depends is not None and depends.dependency is None:
        # Copy `depends` before mutating it
        depends = copy(depends)
        depends = dataclasses.replace(depends, dependency=type_annotation)

    # Handle non-param type annotations like Request
    # Only apply special handling when there's no explicit Depends - if there's a Depends,

    return x_key


@app.get("/items/", dependencies=[Depends(verify_token), Depends(verify_key)])
async def read_items():

app = FastAPI(dependencies=[Depends(verify_token), Depends(verify_key)])


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


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