例如，<a href="https://docs.python.org/zh-cn/3/tutorial/inputoutput.html#reading-and-writing-files" class="external-link" target="_blank">你可以使用`with`读取文件</a>：

```Python
with open("./somefile.txt") as f:
    contents = f.read()
    print(contents)
```

在底层，`open("./somefile.txt")`创建了一个被称为"上下文管理器"的对象。

当 `with` 代码块结束时，它会确保关闭文件，即使发生了异常也是如此。

当你使用 `yield` 创建一个依赖项时，**FastAPI** 会在内部将其转换为上下文管理器，并与其他相关工具结合使用。

 */
package jcifs.internal.smb2.create;


import jcifs.Decodable;


/**
 * @author mbechler
 *
 */
public interface CreateContextResponse extends Decodable {

    /**
     * @return context name
     */
    byte[] getName ();

package jcifs.internal.smb2.nego;


import jcifs.Encodable;


/**
 * @author mbechler
 *
 */
public interface NegotiateContextRequest extends Encodable {

    /**
     * 
     * @return context type
     */
    int getContextType ();

package jcifs.internal.smb2.nego;


import jcifs.Decodable;


/**
 * @author mbechler
 *
 */
public interface NegotiateContextResponse extends Decodable {

    /**
     * 
     * @return context type
     */
    int getContextType ();

import org.junit.jupiter.params.provider.Arguments
import org.junit.jupiter.params.provider.ArgumentsProvider

abstract class SimpleProvider : ArgumentsProvider {
  override fun provideArguments(context: ExtensionContext) = arguments().map { Arguments.of(it) }.stream()

  @Throws(Exception::class)
  abstract fun arguments(): List<Any>

   * possible for a directory to be replaced with a symbolic link between checking if the file is a
   * directory and actually reading the contents of that directory.
   *
   * <p>If the {@link Path} passed to one of the traversal methods does not exist or is not a
   * directory, no exception will be thrown and the returned {@link Iterable} will contain a single

   * possible for a directory to be replaced with a symbolic link between checking if the file is a
   * directory and actually reading the contents of that directory.
   *
   * <p>If the {@link Path} passed to one of the traversal methods does not exist or is not a
   * directory, no exception will be thrown and the returned {@link Iterable} will contain a single

		cfg.inlineBlock = 128 * humanize.KiByte
	}

	cfg.initialized = true

	return cfg, nil
}

func configLogOnceIf(ctx context.Context, err error, id string, errKind ...interface{}) {
	logger.LogOnceIf(ctx, "config", err, id, errKind...)

	// If true, the revision tag will not be affected by the installer.
	UserManaged bool
}

// Generate generates the manifests for a revision tag pointed the given revision.
func Generate(ctx context.Context, client kube.Client, opts *GenerateOptions, istioNS string) (string, error) {
	// abort if there exists a revision with the target tag name
	revWebhookCollisions, err := GetWebhooksWithRevision(ctx, client.Kube(), opts.Tag)

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package repair

import (
	"context"
	"fmt"
	"strings"

	corev1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/types"

	"istio.io/istio/cni/pkg/config"
	"istio.io/istio/cni/pkg/plugin"