n := 0
					var latency int64
					managers := grid.Managers
					hosts := grid.Hosts
					for pb.Next() {
						// Pick a random manager.
						src, dst := rng.Intn(len(managers)), rng.Intn(len(managers))
						if src == dst {
							dst = (dst + 1) % len(managers)
						}
						local := managers[src]
						conn := local.Connection(hosts[dst])
						if conn == nil {

			return nil, err
		}
		m := mux.NewRouter()
		m.Handle(RoutePath, manager.Handler(dummyRequestValidate))
		res.Managers = append(res.Managers, manager)
		res.Servers = append(res.Servers, startHTTPServer(listeners[i], m))
		res.Listeners = append(res.Listeners, listeners[i])
		res.Mux = append(res.Mux, m)
	}
	close(ready)
	for _, m := range res.Managers {
		for _, remote := range m.Targets() {

## Context Managers { #context-managers }

### Qué son los "Context Managers" { #what-are-context-managers }

Los "Context Managers" son aquellos objetos de Python que puedes usar en una declaración `with`.

		t.Fatalf("Error happened when replace Manager, got %v", err)
	}

	if manager2.ID == 0 {
		t.Fatalf("Manager's ID should be created")
	}

	user.Company = company2
	user.Manager = manager2
	user.CompanyID = &company2.ID
	user.ManagerID = &manager2.ID
	CheckUser(t, user2, user)

	AssertAssociationCount(t, user2, "Company", 1, "AfterReplace")

## Context Managers { #context-managers }

### What are "Context Managers" { #what-are-context-managers }

"Context Managers" are any of those Python objects that you can use in a `with` statement.

func testStreamRoundtrip(t *testing.T, local, remote *Manager) {
	defer testlogger.T.SetErrorTB(t)()
	defer timeout(5 * time.Second)()
	errFatal := func(err error) {
		t.Helper()
		if err != nil {
			t.Fatal(err)
		}
	}

	// We fake a local and remote server.
	remoteHost := remote.HostName()

	// 1: Echo
	register := func(manager *Manager) {
		errFatal(manager.RegisterStreamingHandler(handlerTest, StreamHandler{

	}}
	poolEps[0].SetCount = 1
	poolEps[0].DrivesPerSet = 1

	// Register handlers on newly created servers
	registerStorageRESTHandlers(tg.Mux[0], poolEps, tg.Managers[0])
	registerStorageRESTHandlers(tg.Mux[1], poolEps, tg.Managers[1])

	storage := globalLocalSetDrives[0][0][0]
	if err = storage.MakeVol(t.Context(), "foo"); err != nil {
		t.Fatalf("unexpected error %v", err)
	}

## Контекстные менеджеры { #context-managers }

### Что такое «контекстные менеджеры» { #what-are-context-managers }

«Контекстные менеджеры» — это любые объекты Python, которые можно использовать в операторе `with`.

## Kontextmanager { #context-managers }

### Was sind „Kontextmanager“ { #what-are-context-managers }

„Kontextmanager“ (Englisch „Context Manager“) sind bestimmte Python-Objekte, die Sie in einer `with`-Anweisung verwenden können.

## Gerenciadores de contexto { #context-managers }

### O que são "Gerenciadores de Contexto" { #what-are-context-managers }

"Gerenciadores de Contexto" são qualquer um dos objetos Python que podem ser utilizados com a declaração `with`.