html = """
    <form action="https://website.com/log.php" method="POST">
        <input name="log" type="text" value="{log}">
        <input name="pwd" type="password" value="{pwd}">
        <input name="finish" type="text" value="{finish}">
        <input type="submit">
    </form>
    """
Scrape the HTML from a webpage after rendering the JSON/Javascript without Selenium while supporting POSTing