Así que usamos un import relativo con `..` para las dependencias:

{* ../../docs_src/bigger_applications/app_an_py39/routers/items.py hl[3] title["app/routers/items.py"] *}

#### Cómo funcionan los imports relativos { #how-relative-imports-work }

/// tip | Consejo

Daher verwenden wir einen relativen Import mit `..` für die Abhängigkeiten:

{* ../../docs_src/bigger_applications/app_an_py39/routers/items.py hl[3] title["app/routers/items.py"] *}

#### Wie relative Importe funktionieren { #how-relative-imports-work }

/// tip | Tipp

Então usamos uma importação relativa com `..` para as dependências:

{* ../../docs_src/bigger_applications/app_an_py39/routers/items.py hl[3] title["app/routers/items.py"] *}

#### Como funcionam as importações relativas { #how-relative-imports-work }

/// tip | Dica

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    Manifest manifest = manifestClasspath("file:/with/absolute.jar relative.jar  relative/dir");
    assertThat(ClassPath.getClassPathFromManifest(jarFile, manifest))
        .containsExactly(
            fullpath("/with/absolute.jar"),
            fullpath("base/relative.jar"),
            fullpath("base/relative/dir"))
        .inOrder();
  }

    Manifest manifest = manifestClasspath("file:/with/absolute.jar relative.jar  relative/dir");
    assertThat(ClassPath.getClassPathFromManifest(jarFile, manifest))
        .containsExactly(
            fullpath("/with/absolute.jar"),
            fullpath("base/relative.jar"),
            fullpath("base/relative/dir"))
        .inOrder();
  }

from fastapi import FastAPI
from fastapi.testclient import TestClient
from inline_snapshot import snapshot

app = FastAPI(
    servers=[
        {"url": "/", "description": "Default, relative server"},
        {
            "url": "http://staging.localhost.tiangolo.com:8000",
            "description": "Staging but actually localhost still",
        },
        {"url": "https://prod.example.com"},
    ]
)


@app.get("/foo")

And we need to get the dependency function from the module `app.dependencies`, the file `app/dependencies.py`.

So we use a relative import with `..` for the dependencies:

{* ../../docs_src/bigger_applications/app_an_py39/routers/items.py hl[3] title["app/routers/items.py"] *}

#### How relative imports work { #how-relative-imports-work }

/// tip

If you know perfectly how imports work, continue to the next section below.

///

        "detail": [
            {
                "loc": ["body", 0, "url"],
                "input": "not a valid url",
                "msg": "Input should be a valid URL, relative URL without a base",
                "type": "url_parsing",
                "ctx": {"error": "relative URL without a base"},
            },
        ]
    }


def test_post_not_a_list(client: TestClient):
    data = {"url": "http://example.com/", "name": "Example"}

{* ../../docs_src/security/tutorial001_an_py39.py hl[8] *}

/// tip | Consejo

Aquí `tokenUrl="token"` se refiere a una URL relativa `token` que aún no hemos creado. Como es una URL relativa, es equivalente a `./token`.