@Override
    public Optional<Boolean> rawStreams() {
        return returnFirstPresentOrEmpty(Options::rawStreams);
    }

    @Override
    public Optional<String> color() {
        return returnFirstPresentOrEmpty(Options::color);
    }

    @Override
    public Optional<Boolean> help() {
        return returnFirstPresentOrEmpty(Options::help);
    }

    @Override

rootdir: /home/user/code/superawesome-cli/app
plugins: forked-1.1.3, xdist-1.31.0, cov-2.8.1
collected 6 items

---> 100%

test_main.py <span style="color: green; white-space: pre;">......                            [100%]</span>

<span style="color: green;">================= 1 passed in 0.03s =================</span>
```

rootdir: /home/user/code/superawesome-cli/app
plugins: forked-1.1.3, xdist-1.31.0, cov-2.8.1
collected 6 items

---> 100%

test_main.py <span style="color: green; white-space: pre;">......                            [100%]</span>

<span style="color: green;">================= 1 passed in 0.03s =================</span>
```

        request = new CliRequest(new String[] {"-Dstyle.color=always"}, null);
        cli.cli(request);
        cli.properties(request);
        cli.logging(request);
        assertTrue(MessageUtils.isColorEnabled());

        MessageUtils.setColorEnabled(true);
        request = new CliRequest(new String[] {"-Dstyle.color=never"}, null);
        cli.cli(request);
        cli.properties(request);

 *
 * @since 4.0.0
 */
@Experimental
public interface MessageBuilderFactory extends Service {
    /**
     * Checks if the underlying output does support styling or not.
     * @return whether color styling is supported or not
     */
    boolean isColorEnabled();

    /**
     * Returns the terminal width or <code>-1</code> if not supported.
     * @return the terminal width
     */

milestone cannot be considered achieved if the issue isn't resolved.

---

<div align="center">
    <img src="https://raw.githubusercontent.com/cncf/artwork/master/other/cncf/horizontal/color/cncf-color.svg" width="300" alt="Cloud Native Computing Foundation logo"/>
    <p>Istio is a <a href="https://cncf.io">Cloud Native Computing Foundation</a> project.</p>

from types import GeneratorType
from typing import Any, Callable, Dict, List, Optional, Tuple, Type, Union
from uuid import UUID

from fastapi.types import IncEx
from pydantic import BaseModel
from pydantic.color import Color
from pydantic.networks import AnyUrl, NameEmail
from pydantic.types import SecretBytes, SecretStr
from typing_extensions import Annotated, Doc

from ._compat import PYDANTIC_V2, UndefinedType, Url, _model_dump

```Python hl_lines="48-52"
{!../../docs_src/websockets/tutorial001.py!}
```

您可以接收和发送二进制、文本和 JSON 数据。

## 尝试一下

如果您的文件名为 `main.py`，请使用以下命令运行应用程序：

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

在浏览器中打开 <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>。

您将看到一个简单的页面，如下所示：

	errorFmtFunc func(string, error, bool) string
)

// EnableQuiet - turns quiet option on.
func EnableQuiet() {
	color.TurnOff() // no colored outputs necessary in quiet mode.
	quietFlag = true
}

// EnableJSON - outputs logs in json format.
func EnableJSON() {
	color.TurnOff() // no colored outputs necessary in JSON mode.
	jsonFlag = true
	quietFlag = true
}

// EnableAnonymous - turns anonymous flag

rootdir: /home/user/code/superawesome-cli/app
plugins: forked-1.1.3, xdist-1.31.0, cov-2.8.1
collected 6 items

---> 100%

test_main.py <span style="color: green; white-space: pre;">......                            [100%]</span>

<span style="color: green;">================= 1 passed in 0.03s =================</span>
```