```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.

Her neyse, yukarıdaki durumlardan herhangi birinde, FastAPI yine de asenkron olarak çalışacak ve son derece hızlı olacaktır.

Ancak yukarıdaki adımları takip ederek, bazı performans optimizasyonları yapılabilecektir.

## Teknik Detaylar

     IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION,
     WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR
     PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS,
     ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT
     KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT
     ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU.

  * Upgrade Node Problem Detector to v0.4.1. New features added:

    * Add /dev/kmsg support for kernel log parsing. ([#112](https://github.com/kubernetes/node-problem-detector/pull/112), [@euank](https://github.com/euank))

    * Add ABRT support. ([#105](https://github.com/kubernetes/node-problem-detector/pull/105), [@juliusmilan](https://github.com/juliusmilan))

	}
	_, ok := ps[policy1]
	if !ok {
		c.Fatalf("policy was missing!")
	}

	// Detach policy1 to set up for policy2
	_, err = s.adm.DetachPolicy(ctx, madmin.PolicyAssociationReq{
		Policies: []string{policy1},
		User:     accessKey,
	})
	if err != nil {
		c.Fatalf("unable to detach policy: %v", err)
	}

	// 3.2 associate policy to user

///

### <a href="https://sanic.readthedocs.io/en/latest/" class="external-link" target="_blank">Sanic</a>

Sanic, `asyncio`'ya dayanan son derece hızlı Python kütüphanelerinden biriydi. Flask'a epey benzeyecek şekilde geliştirilmişti.

/// note | "Teknik detaylar"

s)}),this.template!==!1?this.$widget=a(this.getTemplate()).on("click",a.proxy(this.widgetClick,this)):this.$widget=!1,this.showInputs&&this.$widget!==!1&&this.$widget.find("input").each(function(){a(this).on({"click.timepicker":function(){a(this).select()},"keydown.timepicker":a.proxy(b.widgetKeydown,b),"keyup.timepicker":a.proxy(b.widgetKeyup,b)})}),this.setDefaultTime(this.defaultTime)},blurElement:function(){this.highlightedUnit=null,this.updateFromElementVal()},clear:function(){this.hour="",...

* <a href="https://jinja.palletsprojects.com" target="_blank"><code>jinja2</code></a> - Requerido si quieres usar la configuración por defecto de templates.

	storageMetricDeleteAbandonedParts
	storageMetricDiskInfo
	storageMetricDeleteBulk
	storageMetricRenamePart
	storageMetricReadParts

	// .... add more

	storageMetricLast
)

// Detects change in underlying disk.
type xlStorageDiskIDCheck struct {
	totalWrites           atomic.Uint64
	totalDeletes          atomic.Uint64

			t.Fatal(err)
		}

		fileInfos, errs = readAllFileInfo(ctx, erasureDisks, "", bucket, object, "", false, true)
		if countErrs(errs, nil) != len(fileInfos) {
			t.Fatal("Expected all xl.meta healed, but partial heal detected")
		}

		fileInfos, errs = readAllFileInfo(ctx, erasureDisks, "", minioMetaBucket, cfgFile, "", false, true)
		nfi, err = getLatestFileInfo(ctx, fileInfos, er.defaultParityCount, errs)