- Reverted the previous fix for portforward cleanup because it introduced a kubelet regression which can lead into segmentation faults. ([#102586](https://github.com/kubernetes/kubernetes/pull/102586), [@saschagrunert](https://github.com/saschagrunert)) [SIG API Machinery and Node]

{* ../../docs_src/path_operation_configuration/tutorial005_py310.py hl[19] *}

/// info

Notice that `response_description` refers specifically to the response, the `description` refers to the *path operation* in general.

///

/// check

OpenAPI specifies that each *path operation* requires a response description.

After you have tests, then you can upgrade the **FastAPI** version to a more recent one, and make sure that all your code is working correctly by running your tests.

If everything is working, or after you make the necessary changes, and all your tests are passing, then you can pin your `fastapi` to that new recent version.

## About Starlette { #about-starlette }

You shouldn't pin the version of `starlette`.

# ==============================================================================
#
# setup.packages.sh: Given a list of Ubuntu packages, install them and clean up.
# Usage: setup.packages.sh <package_list.txt>
set -e

# Prevent apt install tzinfo from asking our location (assumes UTC)
export DEBIAN_FRONTEND=noninteractive

apt-get update
# Remove commented lines and blank lines

        }

        /**
         * A comparable value for the empty-string qualifier. This one is used to determine if a given qualifier makes
         * the version older than one without a qualifier, or more recent.
         */
        private static final String RELEASE_VERSION_INDEX = String.valueOf(QUALIFIERS.indexOf(""));

        private final String value;

        StringItem(String value, boolean followedByDigit) {

But before that, handling asynchronous code was quite more complex and difficult.

In previous versions of Python, you could have used threads or <a href="https://www.gevent.org/" class="external-link" target="_blank">Gevent</a>. But the code is way more complex to understand, debug, and think about.

In previous versions of NodeJS / Browser JavaScript, you would have used "callbacks". Which leads to "callback hell".

     */
    @Required
    @Size(max = 1000)
    public String id;

    /**
     * The version number of the scheduler for optimistic locking.
     * This field is required to prevent concurrent modification conflicts
     * by ensuring the scheduler hasn't been modified by another process.
     */
    @Required
    @ValidateTypeFailure
    public Integer versionNo;

 * - Uses ConcurrentLinkedQueue for O(1) operations
 * - Lock-free operations for better concurrency
 * - Proper buffer validation and limits
 */
public class BufferCache {

    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    private BufferCache() {
        // Utility class - not instantiable
    }

    private static final int MAX_BUFFERS = Config.getInt("jcifs.smb1.smb.maxBuffers", 16);

            throw new RuntimeCIFSException("Usage count dropped below zero");
        }
    }

    @Override
    protected void finalize() throws Throwable {
        try {
            // Add null check to prevent NPE if object was not fully constructed
            if (this.usageCount != null && this.usageCount.get() != 0) {
                log.warn("Tree handle was not properly released, performing emergency cleanup: "

   */
  internal val isMultiplexed: Boolean
    get() = http2Connection != null

  /** Prevent further exchanges from being created on this connection. */
  override fun noNewExchanges() {
    withLock {
      noNewExchanges = true
    }
    connectionListener.noNewExchanges(this)
  }

  /** Prevent this connection from being used for hosts other than the one in [route]. */
  internal fun noCoalescedConnections() {