// Possible usages are:
	// e.g. In a cluster with more than one control plane instances, this field should be
	// assigned the address of the external load balancer in front of the
	// control plane instances.
	// e.g.  in environments with enforced node recycling, the ControlPlaneEndpoint
	// could be used for assigning a stable DNS to the control plane.
	// +optional
	ControlPlaneEndpoint string `json:"controlPlaneEndpoint,omitempty"`

		can potentially impersonate the Kubernetes Control Plane.

		The TLS bootstrap mechanism is also driven via a shared token. This is
		used to temporarily authenticate with the Kubernetes Control Plane to submit a
		certificate signing request (CSR) for a locally created key pair. By
		default, kubeadm will set up the Kubernetes Control Plane to automatically
		approve these signing requests. This token is passed in with the

			needConfirmation = true
			message += fmt.Sprintf("Unable to find any proxies pointing to the %s control plane. "+
				"This may be because the control plane cannot be connected or there is no %s control plane.\n", rev, rev)
		}
		if gwList != "" {
			needConfirmation = true
			message += fmt.Sprintf(GatewaysRemovedWarning, gwList)
		}
	}
	if dryRun || uiArgs.skipConfirmation {
		l.LogAndPrint(message)
		return
	}

			output, _ := istioCtl.InvokeOrFail(t, args)

			// istioctl will return a single "control plane version" if all control plane versions match
			controlPlaneRegex := regexp.MustCompile(`control plane version: [a-z0-9\-]*`)
			if controlPlaneRegex.MatchString(output) {
				return
			}

			t.Fatalf("Did not find control plane version: %v", output)
		})
}

	switch runtime.GOOS {
	case "windows", "plan9":
		t.Skipf("skipping numgoroutine test on %s", runtime.GOOS)
	}
	t.Parallel()
	got := runTestProg(t, "testprogcgo", "NumGoroutine")
	want := "OK\n"
	if got != want {
		t.Errorf("expected %q got %v", want, got)
	}
}

func TestCatchPanic(t *testing.T) {
	t.Parallel()
	switch runtime.GOOS {
	case "plan9", "windows":

import (
	"sync"

	accesslog "github.com/envoyproxy/go-control-plane/envoy/config/accesslog/v3"
	core "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
	listener "github.com/envoyproxy/go-control-plane/envoy/config/listener/v3"
	cel "github.com/envoyproxy/go-control-plane/envoy/extensions/access_loggers/filters/cel/v3"
	grpcaccesslog "github.com/envoyproxy/go-control-plane/envoy/extensions/access_loggers/grpc/v3"

	CertificateKeySize = 32

	// LabelNodeRoleControlPlane specifies that a node hosts control-plane components
	LabelNodeRoleControlPlane = "node-role.kubernetes.io/control-plane"

	// LabelExcludeFromExternalLB can be set on a node to exclude it from external load balancers.
	// This is added to control plane nodes to preserve backwards compatibility with a legacy behavior.

	"syscall"

	corev2 "github.com/envoyproxy/go-control-plane/envoy/api/v2/core"
	corev3 "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
	authv2 "github.com/envoyproxy/go-control-plane/envoy/service/auth/v2"
	authv3 "github.com/envoyproxy/go-control-plane/envoy/service/auth/v3"
	typev2 "github.com/envoyproxy/go-control-plane/envoy/type"
	typev3 "github.com/envoyproxy/go-control-plane/envoy/type/v3"

topic            (string)    Kafka topic used for bucket notifications
sasl_username    (string)    username for SASL/PLAIN or SASL/SCRAM authentication
sasl_password    (string)    password for SASL/PLAIN or SASL/SCRAM authentication
sasl_mechanism   (string)    sasl authentication mechanism, default 'plain'
tls_client_auth  (string)    clientAuth determines the Kafka server's policy for TLS client auth

Có nghĩa là: "biến `items` là một `list`, và mỗi phần tử trong danh sách này là một `str`".

!!! tip
    Nếu bạn sử dụng Python 3.9 hoặc lớn hơn, bạn không phải import `List` từ `typing`, bạn có thể sử dụng `list` để thay thế.

Bằng cách này, trình soạn thảo của bạn có thể hỗ trợ trong khi xử lí các phần tử trong danh sách:

<img src="/img/python-types/image05.png">

Đa phần đều không thể đạt được nếu không có các kiểu dữ liệu.