QPushButton: класс для создания кнопок в PyQt

Original Text:

    


    
This is a Heading
    
This is a paragraph.


    

Rewritten and Formatted Text:

<!DOCTYPE html>
<html>
<head>
    <title>Page Title</title>
</head>
<body>
    <h1>This is a Heading</h1>
    <p>This is a paragraph.</p>
</body>
</html>