---

Visszatérve az előző kód példához. A **FastAPI**:

* Validálja hogy van egy `item_id` mező a `GET` és `PUT` kérésekben.
* Validálja hogy az `item_id` `int` típusú a `GET` és `PUT` kérésekben.
    * Ha nem akkor látni fogunk egy tiszta hibát ezzel kapcsolatban.
* ellenőrzi hogyha van egy opcionális query paraméter `q` névvel (azaz `http://127.0.0.1:8000/items/foo?q=somequery`) `GET` kérések esetén.

func (d *DeletedObject) VersionPurgeStatus() VersionPurgeStatusType {
	return d.ReplicationState.CompositeVersionPurgeStatus()
}

// DeleteMarkerReplicationStatus return composite replication status of delete marker across targets
func (d *DeletedObject) DeleteMarkerReplicationStatus() replication.StatusType {
	return d.ReplicationState.CompositeReplicationStatus()
}

				if filterLifecycle(bucket, version.Name, version) {
					expired++
					stopFn(version.Size, errors.New("ILM expired object/version will be skipped"))
					continue
				}

				// any object with only single DEL marker we don't need
				// to rebalance, just skip it, this also includes
				// any other versions that have already expired.
				remainingVersions := len(fivs.Versions) - expired
				if version.Deleted && remainingVersions == 1 {

		// If separator is not found or is last entry, ok.
		return idx == -1 || idx == len(ext)-len(separator)
	}
	return false
}

// isLatestDeletemarker returns whether the latest version is a delete marker.
// If metadata is NOT versioned false will always be returned.
// If v2 and UNABLE to load metadata true will be returned.
func (e *metaCacheEntry) isLatestDeletemarker() bool {
	if e.cached != nil {

Dit betekent niet dat `one_person` de **klasse** is met de naam `Person`.

## Pydantic modellen

<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> is een Python-pakket voor het uitvoeren van datavalidatie.

Je declareert de "vorm" van de data als klassen met attributen.

Elk attribuut heeft een type.

		}
		if result.Prefixes[0] != "this/" {
			t.Errorf("%s: Expected the prefix to be `%s`, but instead found `%s`", instanceType, "this/", result.Prefixes[0])
		}
	}

	// check results with Marker.
	{
		result, err = obj.ListObjects(context.Background(), "bucket", "", "newPrefix", "", 3)
		if err != nil {
			t.Fatalf("%s: <ERROR> %s", instanceType, err)
		}
		if result.Objects[0].Name != "newPrefix2" {

				sizeS.deleteMarkers++
			}
			if oi.VersionID != "" && sz == actualSz {
				sizeS.versions++
			}
			sizeS.totalSize += sz

			// Skip tier accounting if object version is a delete-marker or a free-version
			// tracking deleted transitioned objects
			switch {
			case oi.DeleteMarker, oi.TransitionedObject.FreeVersion:
				return
			}
			tier := oi.StorageClass
			if tier == "" {

	}

	if nonActionableMetaErrs > 0 || nonActionablePartsErrs > 0 {
		return validMeta, false
	}

	if validMeta.Deleted {
		// notFoundPartsErrs is ignored since
		// - delete marker does not have any parts
		dataBlocks := (len(errs) + 1) / 2
		return validMeta, notFoundMetaErrs > dataBlocks
	}

	// TODO: It is possible to replay the object via just single

	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}

necessary.  Here is a sample; alter the names:

  Yoyodyne, Inc., hereby disclaims all copyright interest in the
  library `Frob' (a library for tweaking knobs) written by James Random
  Hacker.

  {signature of Ty Coon}, 1 April 1990
  Ty Coon, President of Vice