# Subdependências { #sub-dependencies }

Você pode criar dependências que possuem **subdependências**.

Elas podem ter o nível de **profundidade** que você achar necessário.

O **FastAPI** se encarrega de resolver essas dependências.

## Primeira dependência "dependable" { #first-dependency-dependable }

Você pode criar uma primeira dependência ("dependable") dessa forma:

{* ../../docs_src/dependencies/tutorial005_an_py310.py hl[8:9] *}

<img src="https://fastapi.tiangolo.com//img/tutorial/sub-applications/image01.png">

다음으로, <a href="http://127.0.0.1:8000/subapi/docs" class="external-link" target="_blank">http://127.0.0.1:8000/subapi/docs</a>에서 하위 응용프로그램의 문서를 여십시오.

하위 경로 접두사 `/subapi` 아래에 선언된 *경로 동작* 을 포함하는, 하위 응용프로그램에 대한 자동 API 문서를 확인할 수 있습니다:

<img src="https://fastapi.tiangolo.com//img/tutorial/sub-applications/image02.png">

Sebastián Ramírez <******@****.***> 1731896744 +0100

Sebastián Ramírez <******@****.***> 1731896744 +0100

func (ps *PubSub[T, M]) Publish(item T) {
	ps.RLock()
	defer ps.RUnlock()
	for _, sub := range ps.subs {
		if sub.types.Contains(Mask(item.Mask())) && (sub.filter == nil || sub.filter(item)) {
			select {
			case sub.ch <- item:
			default:
			}
		}
	}
}

// Subscribe - Adds a subscriber to pubsub system

            task.from(extension.getUserManual().getSnippets(), sub -> {
                sub.into("snippets");
                sub.exclude("**/.gradle/**");
                sub.exclude("**/build/**");
                sub.setIncludeEmptyDirs(false);
            });
            task.from(extension.getUserManual().getSamples(), sub -> {
                sub.into("samples");
                sub.exclude("**/*.adoc");

@app.get("/counter/")
async def get_counter(count: int = Depends(dep_counter)):
    return {"counter": count}


@app.get("/sub-counter/")
async def get_sub_counter(
    subcount: int = Depends(super_dep), count: int = Depends(dep_counter)
):
    return {"counter": count, "subcounter": subcount}


@app.get("/sub-counter-no-cache/")
async def get_sub_counter_no_cache(
    subcount: int = Depends(super_dep),

        == response2.json()
        == {"name": "Plumbus", "description": None, "sub": None}
    )


def test_create_item_with_sub():
    client = get_app_client()
    client_no = get_app_client(separate_input_output_schemas=False)
    data = {
        "name": "Plumbus",
        "sub": {"subname": "SubPlumbus", "sub_description": "Sub WTF"},
    }
    response = client.post("/items/", json=data)

	SUB	R0->28, R1           // 401e41e0
	SUB	R0@>28, R1           // 601e41e0
	SUB.S	R0<<28, R1           // 001e51e0
	SUB.S	R0>>28, R1           // 201e51e0
	SUB.S	R0->28, R1           // 401e51e0
	SUB.S	R0@>28, R1           // 601e51e0
	SUB	R0<<R1, R2, R3       // 103142e0
	SUB	R0>>R1, R2, R3       // 303142e0
	SUB	R0->R1, R2, R3       // 503142e0
	SUB	R0@>R1, R2, R3       // 703142e0

    new ForwardingWrapperTester()
        .testForwarding(
            Sub.class,
            new Function<Sub, Sub>() {
              @Override
              public Sub apply(Sub sub) {
                return new ForwardingSub(sub);
              }
            });
  }

  interface Base {
    CharSequence getId();
  }

  interface Sub extends Base {
    @Override
    String getId();
  }