From engine name, load the engine path and return the renderer class
    
    Raise 'FeedparserError' if any loading error

def get_feed_renderer(engines, name):
    """
    From engine name, load the engine path and return the renderer class
    
    Raise 'FeedparserError' if any loading error
    """
    if name not in engines:
        raise FeedparserError("Given feed name '{}' does not exists in 'settings.FEED_RENDER_ENGINES'".format(name))
    
    renderer = safe_import_module(engines[name])
    
    return renderer