async def context_a(state: dict = Depends(get_state)):
    state["context_a"] = "started a"
    try:
        yield state
    finally:
        state["context_a"] = "finished a"


async def context_b(state: dict = Depends(context_a)):
    state["context_b"] = "started b"
    try:
        yield state
    finally:
        state["context_b"] = f"finished b with a: {state['context_a']}"

	if *flagCheck {
		// slow, not worth repeating in -check
		t.Skip("skipping with -check set")
	}
	testenv.MustHaveGoBuild(t)
	context := new(build.Context)
	*context = build.Default
	context.Dir = filepath.Join(testenv.GOROOT(t), "src")

	w := NewWalker(context, context.Dir)
	for _, pkg := range w.stdPackages {
		if strings.HasPrefix(pkg, "vendor/") || strings.HasPrefix(pkg, "golang.org/x/") {

def test_dependency_contextvars():
    """
    Check that custom middlewares don't affect the contextvar context for dependencies.

    The code before yield and the code after yield should be run in the same contextvar
    context, so that request_state_context_var.reset(contextvar_token).

    If they are run in a different context, that raises an error.
    """
    response = client.get("/user")
    assert response.json() == "deadpond"

			t.Fatal(err)
		}
		nextFiles = next
	}

	for _, c := range contexts {
		c.Compiler = build.Default.Compiler
	}

	walkers := make([]*Walker, len(contexts))
	var wg sync.WaitGroup
	for i, context := range contexts {
		i, context := i, context
		wg.Add(1)
		go func() {
			defer wg.Done()
			walkers[i] = NewWalker(context, filepath.Join(testenv.GOROOT(t), "src"))
		}()
	}
	wg.Wait()

```jinja hl_lines="7"
{!../../docs_src/templates/templates/item.html!}
```

### Valores de Contexto de la Plantilla { #template-context-values }

En el HTML que contiene:

{% raw %}

```jinja
Item ID: {{ id }}
```

{% endraw %}

...mostrará el `id` tomado del `dict` de "contexto" que pasaste:

```Python
{"id": id}
```

Por ejemplo, con un ID de `42`, esto se renderizaría como:

 * application-specific data to provide context when invoking session methods.</p>
 *
 * <p>This trace information is particularly useful for:</p>
 * <ul>
 *   <li>Debugging and troubleshooting request flows</li>
 *   <li>Audit logging of session operations</li>
 *   <li>Performance monitoring of nested operations</li>
 * </ul>
 *

* «/// tip»: «/// tip | Dica»
* «/// warning»: «/// warning | Atenção»
* «(you should)»: «(você deveria)»
* async context manager: gerenciador de contexto assíncrono
* autocomplete: autocompletar
* autocompletion: preenchimento automático
* bug: bug
* context manager: gerenciador de contexto
* cross domain: cross domain (do not translate to "domínio cruzado")
* cross origin: cross origin (do not translate to "origem cruzada")

* dependable: dependable (do not translate to "confiable" or "fiable")
* list (as in Python list): list
* context manager: context manager (do not translate to "gestor de contexto" or "administrador de contexto")
* a little bit: un poquito
* graph (data structure, as in "dependency graph"): grafo (do not translate to "gráfico")

	return val
}

func setCaller(ctx context.Context, cl *RemoteClient) context.Context {
	//nolint:staticcheck // SA1029 Staticcheck is drunk.
	return context.WithValue(ctx, ctxCallerKey{}, cl)
}

func setSubroute(ctx context.Context, s string) context.Context {
	//nolint:staticcheck // SA1029 Staticcheck is drunk.
	return context.WithValue(ctx, ctxSubrouteKey{}, s)
}

```jinja hl_lines="7"
{!../../docs_src/templates/templates/item.html!}
```

### Valores de contexto do template { #template-context-values }

No código HTML que contém:

{% raw %}

```jinja
Item ID: {{ id }}
```

{% endraw %}

...aparecerá o `id` obtido do "context" `dict` que você passou:

```Python
{"id": id}
```

Por exemplo, dado um ID de valor `42`, aparecerá: