log.debug(String.format("Retrying (%d/%d) request %s", retries, maxRetries, request));
            }

            // should we disconnect the transport here? otherwise we make an additional attempt to detect that if the
            // server closed the connection as a result
            log.debug("Disconnecting tree on send retry", last);
            disconnect(true);

            if ( retries >= maxRetries ) {

			},
			expectedProtocol: "HTTP",
		},
		{
			port: corev1.ServicePort{
				Protocol: corev1.ProtocolTCP,
				Port:     80,
			},
			expectedProtocol: "auto-detect",
		},
		{
			port: corev1.ServicePort{
				Protocol: corev1.ProtocolUDP,
				Port:     80,
			},
			expectedProtocol: "UDP",
		},
		{
			port: corev1.ServicePort{

	if s3Error != ErrNone && s3Error != ErrAccessDenied {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
		return
	}

	// Anonymous users, should be rejected.
	if cred.AccessKey == "" {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrAccessDenied), r.URL)
		return
	}

	// If etcd, dns federation configured list buckets from etcd.
	var bucketsInfo []BucketInfo

	gopts := opts
	gopts.NoLock = true // We already have a lock, we can live with it.
	objInfo, err := getObjectInfo(ctx, bucket, object, gopts)
	if err != nil {
		// Versioning enabled quite possibly object is deleted might be delete-marker
		// if present set the headers, no idea why AWS S3 sets these headers.
		if objInfo.VersionID != "" && objInfo.DeleteMarker {
			w.Header()[xhttp.AmzVersionID] = []string{objInfo.VersionID}

```Python hl_lines="1 4"
{!../../docs_src/python_types/tutorial009.py!}
```

O uso de `Optional[str]` em vez de apenas `str` permitirá que o editor o ajude a detectar erros, onde você pode estar assumindo que um valor é sempre um `str`, quando na verdade também pode ser `None`.

`Optional[Something]` é na verdade um atalho para `Union[Something, None]`, eles são equivalentes.

- Kubeadm: add support for dry running `kubeadm...

				stopFn := globalBatchJobsMetrics.trace(batchJobMetricReplication, job.ID, attempts)
				success := true
				if err := r.ReplicateFromSource(ctx, api, core, oi, retry); err != nil {
					// object must be deleted concurrently, allow these failures but do not count them
					if isErrVersionNotFound(err) || isErrObjectNotFound(err) {
						return
					}
					stopFn(oi, err)
					batchLogIf(ctx, err)
					success = false

	SRDeleteOp SRBucketDeleteOp // only when site replication is enabled
}

// BucketOptions provides options for ListBuckets and GetBucketInfo call.
type BucketOptions struct {
	Deleted    bool // true only when site replication is enabled
	Cached     bool // true only when we are requesting a cached response instead of hitting the disk for example ListBuckets() call.
	NoMetadata bool
}

* Scheduler skips pods that use a PVC that either does not exist or is being deleted. ([#55957](https://github.com/kubernetes/kubernetes/pull/55957), [@jsafrane](https://github.com/jsafrane))
* Fixed a garbage collection race condition where objects with ownerRefs pointing to cluster-scoped objects could be deleted incorrectly. ([#57211](https://github.com/kubernetes/kubernetes/pull/57211), [@liggitt](https://github.com/liggitt))

/// note

FastAPI will know that the value of `q` is not required because of the default value `= None`.

The `Union` in `Union[str, None]` will allow your editor to give you better support and detect errors.

///

## Additional validation

We are going to enforce that even though `q` is optional, whenever it is provided, **its length doesn't exceed 50 characters**.

### Import `Query` and `Annotated`