def _html_template(site_name, author, js_snippet, css_snippet):
    """Create a HTML Template given a site name,
    author, snippet to include JS files and CSS files
    """
    template_data = {
        'site_name': site_name,
        'author': author,
        'js': js_snippet,
        'css': css_snippet
    }
    with open('module43.template') as filehandle:
        template = filehandle.read()
    return template.format_map(template_data)