{* ../../docs_src/websockets_/tutorial003_py310.py hl[79:81] *}

To try it out:

* Open the app with several browser tabs.
* Write messages from them.
* Then close one of the tabs.

That will raise the `WebSocketDisconnect` exception, and all the other clients will receive a message like:

```
Client #1596980209979 left the chat
```

        String mavenUserConf = System.getProperty(Constants.MAVEN_USER_CONF);
        if (mavenUserConf != null) {
            return Paths.get(mavenUserConf, FILE_NAME);
        }
        // this means we are in UT or alike
        return Paths.get(System.getProperty("user.home"), ".m2", FILE_NAME);
    }

                                            key="labels.sortOrder"/></label>
                                    <div class="form-inline col-sm-9">
                                        <la:errors property="sortOrder"/>
                                        <input type="number" name="sortOrder" id="sortOrder"

$ export MY_NAME="Wade Wilson"

// Then you could use it with other programs, like
$ echo "Hello $MY_NAME"

Hello Wade Wilson
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console
// Create an env var MY_NAME
$ $Env:MY_NAME = "Wade Wilson"

// Use it with other programs, like
$ echo "Hello $Env:MY_NAME"

Hello Wade Wilson
```

</div>

////

使用 `UploadFile` 相較於 `bytes` 有數個優點：

* 你不必在參數的預設值使用 `File()`。
* 它使用「spooled」檔案：
    * 檔案在記憶體中保存到某個大小上限，超過上限後會存到磁碟。
* 因此適合處理大型檔案（例如圖片、影片、大型二進位檔等），而不會耗盡記憶體。
* 你可以取得上傳檔案的中繼資料。
* 它提供一個[file-like](https://docs.python.org/3/glossary.html#term-file-like-object) 的 `async` 介面。
* 它會提供實際的 Python [`SpooledTemporaryFile`](https://docs.python.org/3/library/tempfile.html#tempfile.SpooledTemporaryFile) 物件，你可以直接傳給需要類檔案物件的其他函式或函式庫。

### `UploadFile` { #uploadfile }

		result.combine(e.Between.Start.analyze(s))
		result.combine(e.Between.End.analyze(s))
	case e.In != nil:
		result.combine(e.In.analyze(s))
	case e.Like != nil:
		result.combine(e.Like.Pattern.analyze(s))
		if e.Like.EscapeChar != nil {
			result.combine(e.Like.EscapeChar.analyze(s))
		}
	default:
		result = qProp{err: errUnexpectedInvalidNode}
	}
	return result
}

```

**Optional configurations:**

If you create online help documentation:
```properties
online.help.supported.langs=ja,sv  # Add your language
```

If you have forum support:
```properties
forum.supported.langs=en,ja,sv  # Add your language
```

The key factor is that a dependency should be a "callable".

A "**callable**" in Python is anything that Python can "call" like a function.

So, if you have an object `something` (that might _not_ be a function) and you can "call" it (execute it) like:

```Python
something()
```

or

```Python
something(some_argument, some_keyword_argument="foo")
```

then it is a "callable".

// constant) is one of the TBL-like instructions and one of its
// inputs does not fit into prog.Reg, so require special handling.
func IsARM64TBL(op obj.As) bool {
	switch op {
	case arm64.AVTBL, arm64.AVTBX, arm64.AVMOVQ:
		return true
	}
	return false
}

// IsARM64CASP reports whether the op (as defined by an arm64.A*
// constant) is one of the CASP-like instructions, and its 2nd

| *Valid Range* | *Minimum value of 900. Maximum value of 31536000.* |
| *Required*    | *No*                                               |

### Policy