python之这个类看起来很愚蠢吗

我正在尝试将我用 PHP 编写的内容移植到 Python 中，主要是为了更好地学习这门语言。有问题的代码是一个 SWF 解析器。在 PHP 中，我将所有数据结构都声明为类。我试图在 Python 中做同样的事情，但似乎没有明确的方法来声明类变量。所以我最终得到了许多看起来像这样的类:

class SWFRGBA(object): 
    red = 0 
    green = 0 
    blue = 0 
    alpha = 0 

Pythoner 真的会写这样的东西吗？

[编辑]

让我发布一些实际代码来说明这个问题。下面的函数读取 SWF 文件中的矢量形状。 readUB()、readSB() 读取一定数量的位，将它们解释为无符号或有符号。有时，给定字段所需的位数本身就是从比特流中读取的。可能会出现三种类型的记录:直边、二次曲线或样式更改。样式更改记录可能会移动笔的位置、更改线条样式索引、更改两个填充样式索引之一或替换样式数组。

protected function readShapeRecords($numFillBits, $numLineBits, $version, &$bytesAvailable) { 
    $records = array(); 
    while($bytesAvailable) { 
        if($this->readUB(1, $bytesAvailable)) { 
            // edge 
            if($this->readUB(1, $bytesAvailable)) { 
                // straight 
                $line = new SWFStraightEdge; 
                $line->numBits = $this->readUB(4, $bytesAvailable) + 2; 
                if($this->readUB(1, $bytesAvailable)) { 
                    // general line 
                    $line->deltaX = $this->readSB($line->numBits, $bytesAvailable); 
                    $line->deltaY = $this->readSB($line->numBits, $bytesAvailable); 
                } else { 
                    if($this->readUB(1, $bytesAvailable)) { 
                        // vertical 
                        $line->deltaX = 0; 
                        $line->deltaY = $this->readSB($line->numBits, $bytesAvailable); 
                    } else { 
                        // horizontal  
                        $line->deltaX = $this->readSB($line->numBits, $bytesAvailable); 
                        $line->deltaY = 0; 
                    } 
                } 
                $records[] = $line; 
            } else { 
                // curve 
                $curve = new SWFQuadraticCurve; 
                $curve->numBits = $this->readUB(4, $bytesAvailable) + 2; 
                $curve->controlDeltaX = $this->readSB($curve->numBits, $bytesAvailable); 
                $curve->controlDeltaY = $this->readSB($curve->numBits, $bytesAvailable); 
                $curve->anchorDeltaX = $this->readSB($curve->numBits, $bytesAvailable); 
                $curve->anchorDeltaY = $this->readSB($curve->numBits, $bytesAvailable); 
                $records[] = $curve; 
            } 
        } else { 
            $flags = $this->readUB(5, $bytesAvailable); 
            if(!$flags) { 
                break; 
            } else { 
                // style change 
                $change = new SWFStyleChange; 
                if($flags & 0x01) { 
                    $change->numMoveBits = $this->readSB(5, $bytesAvailable); 
                    $change->moveDeltaX = $this->readSB($change->numMoveBits, $bytesAvailable); 
                    $change->moveDeltaY = $this->readSB($change->numMoveBits, $bytesAvailable); 
                } 
                if($flags & 0x02) { 
                    $change->fillStyle0 = $this->readUB($numFillBits, $bytesAvailable); 
                } 
                if($flags & 0x04) { 
                    $change->fillStyle1 = $this->readUB($numFillBits, $bytesAvailable); 
                } 
                if($flags & 0x08) { 
                    $change->lineStyle = $this->readUB($numLineBits, $bytesAvailable); 
                } 
                if($flags & 0x10) { 
                    $change->newFillStyles = $this->readFillStyles($version, $bytesAvailable); 
                    $change->newLineStyles = $this->readLineStyles($version, $bytesAvailable); 
                    $change->numFillBits = $numFillBits = $this->readUB(4, $bytesAvailable); 
                    $change->numLineBits = $numLineBits = $this->readUB(4, $bytesAvailable); 
                } 
                $records[] = $change; 
            } 
        } 
    } 
    $this->alignToByte(); 
    return $records; 
}