```

////

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

/// tip | Dica

Utilize a versão com `Annotated` se possível.

///

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

////

Você declara a dependência como o tipo do parâmetro, e utiliza `Depends()` sem nenhum parâmetro, em vez de ter que escrever a classe *novamente* dentro de `Depends(CommonQueryParams)`.

À un moment donné, vous finirez probablement par écrire de nombreux programmes différents qui dépendent de packages différents. Et certains de ces projets sur lesquels vous travaillez dépendront de versions différentes du même package. 😱

Par exemple, vous pourriez créer un projet appelé `philosophers-stone`, ce programme dépend d’un autre package appelé **`harry`, en version `1`**. Vous devez donc installer `harry`.

```mermaid

    return x_key


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

    )


async def get_current_user(token: str = Depends(oauth2_scheme)):
    user = fake_decode_token(token)
    return user


@app.get("/users/me")
async def read_users_me(current_user: User = Depends(get_current_user)):

## Typannotation vs. `Depends` { #type-annotation-vs-depends }

Beachten Sie, wie wir `CommonQueryParams` im obigen Code zweimal schreiben:

//// tab | Python 3.10+

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

////

//// tab | Python 3.10+ nicht annotiert

/// tip | Tipp

    )


async def get_current_user(token: Annotated[str, Depends(oauth2_scheme)]):
    user = fake_decode_token(token)
    return user


@app.get("/users/me")
async def read_users_me(current_user: Annotated[User, Depends(get_current_user)]):

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] *}

## Анотація типів проти `Depends` { #type-annotation-vs-depends }

Зверніть увагу, що вище ми двічі пишемо `CommonQueryParams`:

//// tab | Python 3.10+

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

////

//// tab | Python 3.10+ без Annotated

/// tip | Порада

        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

def get_user(user_id: int, session: Annotated[Session, Depends(get_session)]):
    user = session.get(User, user_id)
    if not user:
        raise HTTPException(status_code=403, detail="Not authorized")
    session.close()


def generate_stream(query: str):
    for ch in query:
        yield ch
        time.sleep(0.1)


@app.get("/generate", dependencies=[Depends(get_user)])
def generate(query: str):