{* ../../docs_src/custom_response/tutorial007.py hl[2,14] *}

#### Utilizando `StreamingResponse` com objetos semelhantes a arquivos

Se você tiver um objeto semelhante a um arquivo (e.g. o objeto retornado por `open()`), você pode criar uma função geradora para iterar sobre esse objeto.

Dessa forma, você não precisa ler todo o arquivo na memória primeiro, e você pode passar essa função geradora para `StreamingResponse` e retorná-la.

 * are "allowed". If all of the desired access bits are not "allowed"
 * the then same process is repeated for inherited ACEs.
 * <p>
 * For example, if user <code>WNET\alice</code> tries to open a file
 * with desired access bits <code>0x00000003</code> (<code>FILE_READ_DATA |
 * FILE_WRITE_DATA</code>) and the target file has the following security
 * descriptor ACEs:
 *
 * <pre>

}

func getMountMap() (map[string]string, error) {
	result := make(map[string]string)

	mountInfo, err := os.Open("/proc/self/mountinfo")
	if err != nil {
		return nil, err
	}
	defer mountInfo.Close()

	scanner := bufio.NewScanner(mountInfo)
	for scanner.Scan() {
		s := strings.Split(scanner.Text(), " ")
		if len(s) != 11 {
			return nil, errors.New("unsupported /proc/self/mountinfo format")
		}
		result[s[2]] = s[9]
	}

  }

  @SuppressWarnings({"removal", "Finalize"}) // b/260137033
  @Override
  protected void finalize() {
    if (state.get().equals(OPEN)) {
      logger.get().log(SEVERE, "Uh oh! An open ClosingFuture has leaked and will close: {0}", this);
      FluentFuture<V> unused = finishToFuture();
    }
  }

        // Act
        int available = stream.available();

        // Assert
        assertEquals(7, available, "Should return available bytes reported by server");

        // Interactions: ensure open, use tree, send IOCTL and close resources
        InOrder inOrder = inOrder(handle, fd, tree);
        inOrder.verify(handle, times(1)).ensureOpen();
        inOrder.verify(fd, times(1)).getTree();

Możesz:

* <a href="https://github.com/tiangolo" class="external-link" target="_blank">Śledzić mnie na **GitHubie**</a>.
    * Zobacz inne projekty open source, które stworzyłem, a mogą być dla Ciebie pomocne.
    * Śledź mnie, aby dostać powiadomienie, gdy utworzę nowy projekt open source.

"use strict";function b(){u(!0)}var c={};a.respond=c,c.update=function(){};var d=[],e=function(){var b=!1;try{b=new a.XMLHttpRequest}catch(c){b=new a.ActiveXObject("Microsoft.XMLHTTP")}return function(){return b}}(),f=function(a,b){var c=e();c&&(c.open("GET",a,!0),c.onreadystatechange=function(){4!==c.readyState||200!==c.status&&304!==c.status||b(c.responseText)},4!==c.readyState&&c.send(null))};if(c.ajax=f,c.queue=d,c.regex={media:/@media[^\{]+\{([^\{\}]*\{[^\}\{]*\})+/gi,keyframes:/@(?:\-(?:o|...

        super(remote, local);
    }

    @Override
    public void connect() throws IOException {
        try {
            socketChannel = SocketChannel.open();
            if (localAddress != null) {
                socketChannel.bind(localAddress);
            }

            socketChannel.connect(remoteAddress);
            socket = socketChannel.socket();

بنابراین، یک سیستم جداگانه بود.

اکنون این مشخصه کمتر استفاده می‌شود و محبوبیت زیادی ندارد.

## استاندارد OpenAPI

استاندارد OpenAPI (قبلاً با نام Swagger شناخته می‌شد) یک open specification برای ساخت APIs (که در حال حاضر جزئی از بنیاد لینوکس میباشد) است.

فریم ورک **FastAPI** بر اساس **OpenAPI** است.

{* ../../docs_src/path_operation_advanced_configuration/tutorial005.py hl[6] *}

If you open the automatic API docs, your extension will show up at the bottom of the specific *path operation*.

<img src="/img/tutorial/path-operation-advanced-configuration/image01.png">