///

Dependências com `yield` evoluíram ao longo do tempo para contemplar diferentes casos de uso e corrigir alguns problemas, aqui está um resumo do que mudou.

### Dependências com `yield` e `scope` { #dependencies-with-yield-and-scope }

Por exemplo, vamos supor que você possua 4 endpoints na sua API (*operações de rota*):

* `/items/public/`
* `/items/private/`
* `/users/{user_id}/activate`
* `/items/pro/`

Você poderia adicionar diferentes requisitos de permissão para cada um deles utilizando apenas dependências e sub-dependências:

```mermaid
graph TB

current_user(["current_user"])
active_user(["active_user"])
admin_user(["admin_user"])

---

Vous pouvez aussi la définir comme une fonction normale au lieu de `async def` :

{* ../../docs_src/first_steps/tutorial003_py310.py hl[7] *}

/// note | Remarque

Si vous ne connaissez pas la différence, consultez [Asynchrone : « Pressé ? »](../async.md#in-a-hurry).

///

### Étape 5 : retourner le contenu { #step-5-return-the-content }

{* ../../docs_src/first_steps/tutorial001_py310.py hl[8] *}

					common = i
					break
				}
			}
			a, b = a[common:], b[common:]
			if len(a) > 64 {
				a = a[:64]
			}
			if len(b) > 64 {
				b = b[:64]
			}
			t.Errorf("after %d common bytes, difference \nread: %x\nwrote:%x", common, a, b)
		}
		t.Fatalf("expect read %d bytes but got %d", wroteBytes, readBytes)
	}
	if readHash.Sum32() != wroteHash.Sum32() {

				bucketsToBeUpdated.Add(bucket)
				continue
			}
			if !globalDomainIPs.Intersection(set.CreateStringSet(getHostsSlice(r)...)).IsEmpty() {
				if globalDomainIPs.Difference(set.CreateStringSet(getHostsSlice(r)...)).IsEmpty() && !domainMissing {
					// No difference in terms of domainIPs and nothing
					// has changed so we don't change anything on the etcd.
					//
					// Additionally also check if domain is updated/missing with more

            .add(Range.openClosed(3, 4))
            .add(Range.open(8, 10))
            .add(Range.openClosed(15, 17))
            .build();

    assertThat(RANGE_SET_ONE.difference(RANGE_SET_TWO)).isEqualTo(expected);
  }

  public void testAsSet() {
    ImmutableSortedSet<Integer> expectedSet = ImmutableSortedSet.of(2, 3, 4, 8, 9, 16, 17);

        long currentTime = roleQueryHelper.getCurrentTime();
        assertTrue(currentTime > 0);

        long currentTimeMillis = System.currentTimeMillis();
        // Allow for small time difference
        assertTrue(Math.abs(currentTime - currentTimeMillis) < 1000);
    }

    @Test
    public void test_constants() {
        assertEquals("userRoles", RoleQueryHelper.USER_ROLES);
    }

---

You could also define it as a normal function instead of `async def`:

{* ../../docs_src/first_steps/tutorial003_py310.py hl[7] *}

/// note

If you don't know the difference, check the [Async: *"In a hurry?"*](../async.md#in-a-hurry).

///

### Step 5: return the content { #step-5-return-the-content }

{* ../../docs_src/first_steps/tutorial001_py310.py hl[8] *}

## Application FastAPI avec des tags { #fastapi-app-with-tags }

Dans de nombreux cas, votre application FastAPI sera plus grande, et vous utiliserez probablement des tags pour séparer différents groupes de *chemins d'accès*.

Par exemple, vous pourriez avoir une section pour les **items** et une autre section pour les **users**, et elles pourraient être séparées par des tags :

He estado evitando la creación de un nuevo framework durante varios años. Primero intenté resolver todas las funcionalidades cubiertas por **FastAPI** usando muchos frameworks diferentes, plug-ins y herramientas.