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

Под капотом" open("./somefile.txt") создаёт объект называемый "контекстным менеджером".

Когда блок `with` завершается, он обязательно закрывает файл, даже если были исключения.

prequalifyme.today
prerelease.replit.dev
press
press.aero
press.cy
press.ma
press.se
presse.km
presse.ml
preview.csb.app
pri.ee
prime
primetel.cloud
principe.st
priv.at
priv.hu
priv.instances.scw.cloud
priv.me
priv.no
priv.pl
privatizehealthinsurance.net
pro
pro.az
pro.br
pro.cy
pro.ec
pro.fj
pro.ht
pro.in
pro.mv
pro.om

また、何らかの方法で例外を使用することもできますが、**FastAPI** から同じデフォルトの例外ハンドラを使用することもできます。

デフォルトの例外ハンドラを`fastapi.exception_handlers`からインポートして再利用することができます:

{* ../../docs_src/handling_errors/tutorial006.py hl[2,3,4,5,15,21] *}

この例では、非常に表現力のあるメッセージでエラーを`print`しています。

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

내부적으로 `open("./somefile.txt")` 는 "컨텍스트 관리자(Context Manager)"라고 불리는 객체를 생성합니다.

`with` 블록이 끝나면, 예외가 발생했더라도 파일을 닫도록 보장합니다.

!important;\n    display: inline-flex !important;\n  }\n}\n\n@media print {\n  .d-print-none {\n    display: none !important;\n  }\n  .d-print-inline {\n    display: inline !important;\n  }\n  .d-print-inline-block {\n    display: inline-block !important;\n  }\n  .d-print-block {\n    display: block !important;\n  }\n  .d-print-table {\n    display: table !important;\n  }\n  .d-print-table-row {\n    display: table-row !important;\n  }\n  .d-print-table-cell {\n    display: table-cell !important;\n  }\n  .d-print-flex...

		consoleapi.TLSPort = globalMinioConsolePort
		consoleapi.Hostname = globalMinioConsoleHost
	}

	return server, nil
}

// Check for updates and print a notification message
func checkUpdate(mode string) {
	updateURL := minioReleaseInfoURL
	if runtime.GOOS == globalWindowsOSName {
		updateURL = minioReleaseWindowsInfoURL
	}

	u, err := url.Parse(updateURL)

  `All right,' said the Cat; and this time it vanished quite slowly,
beginning with the end of the tail, and ending with the grin,
which remained some time after the rest of it had gone.

  `Well!  I've often seen a cat without a grin,' thought Alice;
`but a grin without a cat!  It's the most curious thing I ever
saw in my life!'

  She had not gone much farther before she came in sight of the

Por exemplo, você pode definir um arquivo `main.py` com o seguinte código:

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

/// tip | Dica

O segundo parâmetro em <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> é o valor padrão para o retorno.

		tmpMetaDir := path.Join(disk, minioMetaTmpBucket)
		files, err := os.ReadDir(tmpMetaDir)
		if err != nil {
			// It's OK to have non-existing tmpMetaDir.
			if osIsNotExist(err) {
				continue
			}

			// Print the error
			t.Errorf("%s", err)
		}

		var found bool
		for _, fi := range files {
			if fi.Name() == ".trash" {
				continue
			}
			found = true
			break
		}

		if found {

  fun testCertificatePinningSuccess() {
    enableTls()

    val certificatePinner =
      CertificatePinner
        .Builder()
        .add(
          server.hostName,
          CertificatePinner.pin(handshakeCertificates.trustManager.acceptedIssuers[0]),
        ).build()
    client = client.newBuilder().certificatePinner(certificatePinner).build()

    server.enqueue(MockResponse(body = "abc"))